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sCreW Offset Jan 4, 2021 · #10 X 1-1/2" Gold Star Cabinet Modified Truss Head Screw - 1 Pound Modified Truss (Washer Head) Screws Are Coated with a Bronze Coating for Superior Exterior Protection Screws Have Been Through 1,200 Hours of Salt Spray Testing Without Coating or Screw Failures Manufactured from High Quality Heat Treated Steel - ACQ Pressure Treated Lumber Compatible Modified Truss Washer Head Wood Screws with Taylor Truss Rod Cover, Screws, 3 Gold. Shop Pro-Twist #8 x 1-1/4-in Phillips-Drive Self-tapping Lath Screws (154-Count) in the Specialty Screws department at Lowe's. FastenMaster TimberLOK is a hex head, heavy duty wood screw available in a variety of lengths and packaging sizes for applications such as attaching rafter or trusses to the top plate, headers, stair stringers and more. What are some of the most reviewed products in Truss Head Screws? Some of the most reviewed products in Truss Head Screws are the Teks #8 x 3/4 in. Better drywall finish – reduced head stand The Strong‑Drive ® SDWS is the 2nd generation structural screw, redesigned with a patented SawTooth™ Point. 7 7. Shop Pro-Twist #8 x 3/4-in Phillips-Drive Self-tapping Lath Screws (202-Count) in the Specialty Screws department at Lowe's. Zinc Plated Combo Truss Head Machine Screw (100-Pack) Machine screws are fully threaded fasteners with a uniform diameter the entire length of the shaft. Install with a standard screw gun and a 2-Phillips-drive bit (screw gun Jun 12, 2018 · 【High Quality Stainless】These Truss Head Screws are made of 18-8 (304) Stainless Steel which is one of the highest forms of corrosion resistant metals, making it last longer than other hardware on the market today. Strong-Drive ® Interior Wood Screws. Pay $223. The engineered drill point and flute remove material and properly size the hole for threads. Blum 834TH-100 No. Metric 316 Stainless Steel Extra-WideTruss Head Phillips Screws. It delivers faster starts, less torque, and eliminates the need for pre-drilling, which means more screws installed and less labour for you compared to conventional installation. x 1/2 in. Zinc plated pan head coarse thread self-drilling screws are contractor-level fasteners for the toughest applications. $1239. Lengths from 1 ½” to 10. Of the many that exist, the most common are No matter what the conditions are, your roof needs to stay put! Spec House roof system here: https://youtu. Tek #8-15 x 2 in. 8 x 3/4 Wood Screw, Zinc. May 5, 2020 · Teks 8 x 3/4 in. Compare. *Find the SCREW TR WSH NDL8X1BX100 at Ace. Phillips Truss Head Drill Point Lath Screws (140-Pack) Add to Cart. The smaller diameter and higher profile give fillister heads a deeper drive slot than round or pan head screws. The screw should be placed so the tip is at or just inside the end of the chan­nel. Modified Truss Head Screws have a 100 degree undercut which creates a larger area beneath the screw's head for a larger bearing surface. #8 x 1-1/4 in. SDWC15600B-KT SDWC 6IN T30 500CT W/GUIDE. S/D. The Wire-Lath Modified Truss-Head Screw. They are engineered for construction applications including furniture, fencing, trim, framing, etc. Phillips Truss Head Drill Point Lath Screws (170-Pack) Add to Cart. Everbilt #10 x 3 in. Apply for a Home Depot Consumer Card. 5° install. #2 drill point for quick penetration of aluminum panels without “point walking. Quik Stik and Strong-Drive SDWC Truss screws are designed to work together for a safe, reliable solution from the leader in structural fastening. The extra-wide truss head distributes holding pressure to reduce the likelihood of crushing thin material. Hassle-free, 30-day Returns. 44 after $25 OFF your total qualifying purchase upon opening a new card. The Strong-Drive SDWC provides a time-saving and reliable option to fastening trusses and rafters to wall top plates. Popular Brand Pick. Each pack includes installation guide to help ensure correct installation. Self-drilling Lightning Tip – upgraded to be Hilti’s fastest, most reliable interior framing screws. The full-threaded shank engages the Includes 50 machines screws to complete your project; Truss head combination Philips; Pair with corresponding nut & washer in like finishes; Common project applications: electronics, license plates, electrical boxes, switch plates, furniture; Knowing the correct types of fasteners will make your projects run more smoothly and be more secure Some of the most reviewed products in Truss Head Wood Screws are the #10 x 2-1/2 in. The wire-lath modified truss-head screw is a special-purpose fastener engineered to attach lath to wood. Its sharp point and aggressive threads zip Fastener SuperStore offers Truss Head options in a variety of screw styles. The Strong-Drive SDWC Truss screw provides a stud-to-bottom plate or stud-to-top plate connection as well as fastening trusses and rafters to top plates. The SDWC is tested in accordance with ICC-ES AC233 (screw) and AC13 (wall assembly and roof-to Apr 18, 2022 · Truss head screws, though, feature a unique type of head that distinguishes them from other types of threaded fasteners. Truss head machine screws have a low, rounded top surface with a flat bearing surface greater in area than a round-head screw of the same nominal size. Apr 16, 2013 · Strong-Drive SDWC TRUSS Screw . The WSTS Truss Structural Wood Screw can be used to resist uplift and lateral loads for truss/rafter-to-plate and stud-to-plate connections. be/pTPnrnRgggsFree Starter Blacksmithing Tool Li What are some of the most reviewed products in Phillips Truss Head Screws? Some of the most reviewed products in Phillips Truss Head Screws are the Teks #8 x 3/4 in. Predrilling for this screw is recommended depending on the substrate. The Jun 10, 2022 · This item: #8 White Screws Wood White Sheet Metal Screw Thread Truss Head Fast Self Tapping White Pan Cabinet Screws Wood Work for Wall Plates, 1/2 Inch, 3/4 Inch, 1 Inch (120) $13. Jan 6, 2021 · Fillister: Fillister heads have a slightly rounded top and tall cylindrical sides. Pro-Twist modified truss screws are a reliable choice for attaching metal lath in stucco to The Strong-Drive SDWC provides a time-saving and reliable option to fastening trusses and rafters to wall top plates. The photo above shows a collection of truss head screws. $192. #8 x 1" PHILLIPS MODIFIED TRUSS HEAD BLACK OXIDE S/D SCREWS 5,000ct | M84B. The fully-threaded shank engages the entire length of the fastener, providing a secure connection. Product Locator by Locally. 8 x 1-1/4 in. UPC #83302. FlatLOK - FL01 Multi-Ply Girder Truss Detail (PDF) Download. The extra-wide truss head distributes holding pressure to reduce the risk of crushing thin metal. Free returns on most items within 30 days. Over­all, it takes about 5 sec­onds to install a Tim­ber­LOK fas­ten­er. (866) 688-2500. 99 Get it as soon as Monday, May 20 Simpson Strong-Tie SDWC15600-KT 6" Structural Screws for Truss & Rafters 50ct. Better drywall finish – reduced head stand The extra -wide truss head distributes holding pressure to reduce the risk of crushing thin metal. Quik Stik Product Information. Truss head screws are fasteners designed with an extra wide and slightly rounded head. Driver bit & installation guide included in each pack (Torx T30: BIT30T) The Strong‑Drive® SDWC Truss Screw provides a truss and rafter-to-top plate connection as well as a method to fasten stud-to-top and bottom plate. 5‑degree angle. 8 x 1 in. 0* 45 70 design capacities INstaLLatION eXaMPLes: Truss aligned with stud Truss offset to stud Truss connection to beam www. Zinc Plated Steel Philips Drill Truss-Head Point Lath Screws (200-Pack) with 856 reviews, and the Teks #8 x 3/4 in. One screw, one tool, and three interchangeable heads replace a variety of clips, straps, and ties used to transfer forces from one framing member to the next. Dec 14, 2022 · FastenMaster TimberLOK installation over a stud. Screws may be mildly magnetic. Reference Series: SDWC series Universal Girder Tiedown FastFix ™ Pryda Screw . One screw up through the top plates into the bottom of each truss and done! I used a cordless impact driver which made light work of the job. 3. 6 out of 5 stars 3,128 To install Tim­ber­LOK screws on a truss to top plate con­nec­tion, sim­ply place the 6” Tim­ber­LOK into the mag­net­ic chan­nel, which holds the screw firm­ly in place. ” Cut point feature offers fast start and reduces torque during installation. Screws; Bolts; Nuts Shop Simpson Strong-Tie #7 x 6-in Clear Zinc Strong-Drive SDWC Interior Wood Screws (50-Per Box) in the Wood Screws department at Lowe's. Features. (Fig. FIND A LOCAL DEALER. Screw spacing shall be determined by a designer. Truss head and pan head screws are non-countersunk, so they’ll produce out of workpieces. Those in the market for top-quality screws and other components are encouraged to Nov 9, 2004 · FMhotu 500Pcs Black Star Drive Wood Screws 2-7/8 inch - Rust Resistant Timber Deck Screws for Landscaping, Log & Timber Wood - Heavy-Duty Outdoor Fasteners (#14 x 2-7/8 Black) dummy FASTENMASTER FastenMaster LedgerLok Flat Head Wood Screw - Bucket of 250 - 5" Everbilt. Oct 24, 2017 · The Strong-Drive SDWC Truss screw provides a stud-to-bottom plate or stud-to-top plate connection as well as fastening trusses and rafters to top plates. Pack of 3 screws to fasten truss rod cover to peghead. Factory Expert Service & Support. Pro-Twist modified truss screws are a reliable choice for attaching metal lath in stucco to Truss. Aluminum Slotted Drive Truss Head Binding Posts and Screws (50-Pack) Add to Cart. Structural Fastening System. The fully-threaded shank engages the entire length of the fastener providing a secure connection. Top Rated. 97 (44 Code compliant, labor reducing, pro quality screws available in interior and exterior finishes. This high-strength structural wood screw Structural Wood Screw. Apr 15, 2018 · The truss head screws are 100% stainless steel 18-8 (304) which offers a high level of chemical and corrosion resistance. Made from steel, they have a zinc plating to resist corrosion in wet environments. May 9, 2019 · Attach Trusses and Rafters Faster!The Strong-Drive SDWC Truss screw provides a truss- and rafter-to-top plate connection. $138. au FOR TRUSS/RAFTER TIE-DOWN CONNECTIONS UpDATED FEB 2023 SDWC TRUSS SCREWS Rafter and Truss Fastening System Quik Fix, correct Angle, erfect Connection. This means that they will end up sitting lower on workpieces and the head will not protrude as much as with pan head screws. 155 in. Zinc-Plated Truss Head Phillips Drive Cabinet Screws with White Painted Head (25-Pack) Add to Cart. The screws feature sharp points and can be used where a wide, low-profile screw head is needed. The SDWC is tested in accordance with ICC-ES AC233 (screw) and AC13 (wall assembly and roof Shop Pro-Twist #8 x 3-in Phillips-Drive Self-tapping Lath Screws (70-Count) in the Specialty Screws department at Lowe's. Faster drilling speed – sharpened tips help the screws to efficiently pierce metal. There is no pre-drilling required, making these easy to use. Starborn H19 installation between studs. $899. Installation Tool. 1 3. com. Use these screws to secure metal wire to steel framing. Jun 15, 2022 · Truss head screws typically have a lower profile than pan head screws. Designed to replace traditional 3/8 inch lag bolts, TimberLOK installs in a fraction of the time with fewer steps and less effort. Recommended screws #8-32 x 1-1/4 in. Sep 11, 2009 · That's when I found out about the TimberLok 6" truss tie screws. The Washer Head is an ideal alternative to traditional lag screws and through-bolts in exterior applications. More Options Available. 5 inch) Stainless Steel Phillips Flat Head Wood Screws,Stainless Steel 18-8 A2(304) Screw,Home Screw Kit by QISHENG The Strong‑Drive ® SDWC Truss Screw provides a truss and rafter-to-top plate connection as well as a method to fasten stud-to-top and bottom plate. FREE delivery Wed, Jul 10 on $35 of items shipped by Amazon. The SDW installs easily with no predrilling and is available in optimized lengths for fastening 2-, 3- and 4-ply trusses. ”. by BLUM INC. The full-threaded shank engages the entire length of the fastener, providing a secure connection. FREE delivery Fri, May 31 on $35 of items shipped by Amazon. Quik Stik Rafter and Truss Fastening System. This high-strength structural wood screw is designed with a shorter thread length to fasten multi-ply members such as plated trusses, engineered-lumber products and solid-sawn lumber. 10. Trusscore Wall&CeilingBoard is designed to be installed with screws. A screw refers to a type of fastener device which is comprised of a thread, or helical ridge, that wraps around a cylinder body. (947) Model# 21500. Fine Zinc-Plated Steel Truss-Head Phillips Sharp-Point Lath Screws (200-Pack) provide secure 26-Gauge to 12-Gauge metal-to-metal fastening in stucco/plaster with strong holding power without the need to pre-drill. Modified Truss Head Sheet Metal Screws are commonly used in applications fastening to wood. 3). Truss Head. No. With that said Screw Offset (mm) 35 3. 9 4. Jan 13, 2023 · The difference between these two screws lies in their profile, because truss head screws tend to have a lower profile than pan head screws. e. These self-piercing screws feature a washer-like head design to help provide great holding power and stability. 834TH-100. Our line of specialty fasteners are uniquely tailored to help you design and build safer, stronger structures for a variety of projects. When installing between the studs, place your screw directly into the underside, about one half inch in from the outer face and directly under the rafter or truss. Use corrosion resistant #8/#10 gauge screws with a flat-bottomed, low profile head (i. Phillips Truss-Head Self-Drilling Screws (200-Pack) with 827 reviews. Phillips Truss-Head Self-Drilling Screws (200-Pack) with 827 . Zinc-Plated Phillips Drive Truss-Head Cabinet Screws with White Painted Head (25-Piece) with 110 reviews. Code-compliant and exterior-coated, our truss screws are the ideal replacement for hurricane ties in general construction and decking applications. +11. Type 410 stainless steel can be hardened through heat Jul 11, 2019 · The Simpson Strong-Tie SDWC Truss Screw provides a truss and rafter-to-top plate connection as well as a method to fasten studs to top or bottom plates. Get the screw started and let the impact driver do the work. Orange colour for easy inspection of 152mm screw. 【Screws That You Can Depend On】Our Truss Head Wood Screws are very strong and are great for both indoor and outdoor use. Truss: Typically used for sheet metal, truss head screws have a wider and slightly rounded surface. The SDPW DEFLECTOR screw is preferably driven with Simpson Strong-Tie offset driver bit for the 3/4" offset installation. Model# 832371. Made from high quality heat treated steel. Or fastest delivery Thu, May 30. At Boat Outfitters, we pride ourselves on offering the widest and most practical selection of boating supplies and accessories. Position the SPAX T-Star plus truss screw in a 22º diagonal upward angle from the interior, bottom corner of the top plate towards the truss. Get free shipping on qualified 5/8 in, Truss Head Wood Screws products or Buy Online Pick Up in Store today in the Hardware Department. Add to Cart. 4 out of 5 stars 65 1 offer from $7. The box even came with the 5/16" magnetic hex bit needed for the screw heads. The fully-threaded shank engages the entire length of the fastener, providing a secure Teks 8 x 1/2 in. The screw will pull the rafter or truss tight, com­plet­ing the con­nec­tion in seconds. 08/Count) FREE delivery Thu, Nov 2 on $35 of items shipped by Amazon. Returns. Fine Zinc-Plated Steel Truss-Head Phillips Sharp-Point Lath Screws (260-Pack) provide secure 26-Gauge to 12-Gauge metal-to-metal fastening in stucco/plaster with strong holding power without the need to pre-drill. FrameFAST is a better way to make critical connections along the continuous load path. Ideally, they are used for thin metal, such as sheet metal and duct work. Start drilling straight up, then draw your angle to 22. (947) Model# 21512. $ 248 44. Buy The World's Greatest Temporary Truss Bracing System Today! TrussLox is a unique light-weight and hands-free spreader bar, TrussLox self-sets and secures trusses 24 inches on-center while workers remain safely tied to the outside walls thus eliminating hazardous labor practices used in traditional methods of setting and securing trusses. #2 Phillips drive. Add to compare. These metric 316 stainless steel screws resist corrosion from chemicals and salt water better than 18-8 stainless steel screws. #8 x 3/4" PHILLIPS MODIFIED TRUSS HEAD BLACK OXIDE S/D SCREWS 8,000ct | M83B. Truss Head Machine Screw Size Chart - Provides dimensions for truss head machine screws at AFT Fasteners. One type of screw called the truss head is shaped in a way that provides fastening support with the least amount of surface MiTek self-drilling interior hex head structural wood screw for use in wood-to-wood and steel-to-wood applications. We’re able to offer great prices on our bulk screw and fastener orders, giving you domestic quality at an imported price. If the truss is direct­ly over a stud, place the point of the screw in the seam between the stud and the top plate and dri­ve the screw at the 22. (The tip should not be pro­trud­ing, but the back of the screw will stick out. Extra-robust – built specifically to resist head breakage and tip burn, saving you wasted screws. I-joist shall shall have minimum flange thickness of 1 1/8". The Bugle Head is the ideal structural wood screw to drive the head flush or countersink it below the wood surface. Pro-Twist modified truss screws are a reliable choice for attaching metal lath in stucco to Here at All Points Fasteners, our modified truss head zip screws are available in zinc plated or stainless steel and with the option of painted heads. 420pcs M2 M3 M4 Phillips Truss Head Self-Tapping Wood Screws,Wafer Head Wood Screws,Pan Head with Washer Tapper Screws Assortment Kit for Wood,Plastic and Soft Metal,13 Sizes,Black Carbon Steel 4. x 6 in. 5°. Agressive threads and self-drilling tip combine with pan head for a tighter, snugger fit ideal for attaching metal lath to stucco and other metal to metal applications. Gold screws add an elevated look for a wide range of guitars. FlatLOK - TER 1503-01 Evaluation Report – General Properties (Canada) A: Yes, a pilot hole is necessary for a #8 x 1/2" Standard Thread Phillips Truss Head Screws. SIMPSON STRONG TIE CO,INC. This is a defining characteristic of all non-countersunk screws. The size of the pilot hole should be slightly smaller than the diameter of the screw shank. 38. Install with a standard screw gun and a 2-Phillips-drive bit (screw gun Teks 8 x 3/4 in. *Dimensions for the #4 diameter Six-Lobe Truss Head Machine Screws are independent of ASME B18. Each package of truss screws includes a truss guide for a 22. Great for attaching metal lath to wood or steel Jul 2, 2018 · 100 Qty #8 x 1" Black Phillips Modified Truss Head Wood Screws (BCP1079) Hard-to-Find Fastener 014973208707 Brown Phillips Pan Sheet Metal Screws, 8 x 1/2, Piece-100 Black Head 100 PCS #8X1-1/2"(1. Drill the truss screw into the top plate, advancing it up through the rafter and into the truss. The Simpson Strong-Tie ® Quik Stik installation tool provides contractors with a versatile solution that makes fastening rafter and truss connections fast, safe and easy. Wafer Head. Securely fastens one to three panel thicknesses. 6. Authentic, Authorized Gear. Pro-Twist fasteners are the choice of professional contractors. (3) Questions & Answers. meyertimber. The full-threaded shank engages the entire length of the fastener; providing a secure connection. The WSTS is tested in accordance with ICC-ES AC233 and AC13 and meets 2021 IRC and IBC code requirements. click here for more info. Truss-Head Screw. Phillips truss head sheet metal screws with a self tapping thread patern. Specifically designed for securing truss and rafter to top plate, stud to top plate and deck joist to beam connections. Versatile is the best way to describe the FastFix™ Pryda Screw. Drive style—or drive recess as it is called—refers to the kind of tool you use to install (or remove) the screw. 0* 6. $750 ($0. Phillips Modified Truss Head Zinc Plated Sheet Metal Screw (50-Pack) Add to Cart. SKU: 10409697. As part of our commitment to making our online store the only place you need to visit, we carry a comprehensive range of stainless steel boat screws. Oct 29, 2018 · Modified Truss Head Screws feature an oversized domed head with a flange, similar to an integral washer. A pilot hole helps to prevent the screw from splitting the wood, and it also helps the screw to go in straighter. 800+ bought in past month. The corrosion proof steel, makes them last much longer than screws made of common materials. 1,714. The truss-head screw is ideal for securing all materials to wood or wood-substrate materials. WSTS screws can be used to provide uplift and lateral loads for truss/rafter-to-plate and stud-to-plate connections. Lath Sharp Point Screws provide secure metal-to-metal fastening with strong holding power. Bolt Dropper - Stainless Phillips Truss Head Machine Screw - #8-32 x 1/4" - Set of 100 - Coarse Thread - 18-8 (304) Stainless Steel - Durable and Corrosion Resistant - DIY Projects & Professional Use. 99 $ 13 . Fast, Free Shipping. 2 out of 5 stars T45. Zinc-Plated Phillips Drive Truss-Head Cabinet Screw with White Painted Head (25-Piece) with 198 reviews, and the #10 x 3 in. Get free shipping on qualified 1/2 in, Truss Head Wood Screws products or Buy Online Pick Up in Store today in the Hardware Department. Hover Image to Zoom. 8 X 3/4in Screw Type 17 Truss Head. Bugle heads are commonly found in drywall screws, and the head design automatically compresses the drywall paper and gypsum as it is installed thus forming its own countersunk hole. The SDWC uplift values listed were analysed and calculated based on the characteristic values Nov 1, 2019 · #7 X 1-5/8" Bronze Star Truss Head Screw (1 Pound ~ 160 Count) These Bronze Star Truss Head CAB Screws are designed for both hard and soft wood; in professional operations and demanding industries. Both truss head and pan head screws will protrude out of the workpieces in which they are installed. Screws and nails are an integral part of every project, whether you’re securing wood, drywall, concrete, steel or other materials. Compare $ 1. Overview of Truss Head Screws. Available in 3 sizes, the range is used as a Stud to Wall Plate Connection, and the game changing Pryda SpeedTruss™ truss installation system. Size #0 Pro-Twist NMTD81581 #8 x 1-5/8 in. $1277. The SPAX T-Star plus truss screw’s full-thread, code-compliant construction will securely connect all Features. Also known as a mushroom head screw, a truss head screw is a type of threaded fastener with a wide and rounded head. 95. 46 FrameFAST. To better suit your needs and cover a greater range of HVAC The Strong-Drive SDW Truss-Ply screw is a high-strength structural wood screw specifically designed for fastening multi-ply wood members, such as joining plated trusses and solid sawn lumber. Login / Register; Cart; Email; Toggle navigation. 100 Qty #8 x 1" Black Phillips Modified Truss Head Wood Screws (BCP1079) 569. Compare $ 10. ) LBY 200pcs #10 x 1/2" ~ #10 x 1-1/2" Wafer Head Self Drilling Screws Sheet Metal Tek Screws Assortment Kit,Modified Truss Head Self-Drilling Tek Screw 6 Sizes Combination 410 Stainless Steel. 6 x 1/2" Stainless Truss Head Phillips Wood Screw, (100 pc), 18-8 (304) Stainless Steel Sheet Metal Screws, Type A Point, Plain Finish by Bolt Dropper 4. truss head, pancake head, round or washer head, cabinet, and other low profile screws) and a minimum head diameter of 3/8". Bolt Dropper No. Common project applications: roofing, HVAC, steel stud framing, gutters and register vents. The truss head provides a trim and finished appearance. The different powder-coated marine-grade screws and painted marine Get free shipping on qualified Simpson Strong-Tie Screws products or Buy Online Pick Up in Store today in the Hardware Department. 3/16 in. BULK. The Strong-Drive SDW Truss-Ply screw is a high-strength structural wood screw specifically designed for fastening multi-ply wood members, such as joining plated trusses and solid-sawn lumber. They are not as strong as pan or round heads but often preferred in applications where minimal clearance exists above the head. They are primarily used to fasten metal parts together. The partition wall top plate-to-stud and top-plate splice connections shall be fastened per applicable building code. The fastener’s design makes it ideal for use when a larger Strong-Drive 6 SDWC Truss Screws (Box of 500) SDWC15600B-KT. Jul 2, 2018 · Small Parts 0820KPMB Steel Self-Drilling Screw, Black Phosphate Finish, Modified Truss Head, Phillips Drive, #2 Drill Point, #8-18 Thread Size, 1-1/4" Length (Pack of 100) 4. All this reduces tool wear and extends your battery life! Fasten corrugated siding panels to steel stud without predrilling. T30 Clear-Zinc Coat, Orange (500-Qty) The Strong-Drive SDWC provides a time-saving and reliable option to fastening trusses and rafters to wall top plates. Type 410 stainless steel is coated for additional corrosion protection. FREE Hinge Matching Assistance – Woodworker Express is your resource to help identify the correct hinge for your replacement. 2 2. They save you time and effort by drilling their own holes and fastening in a single operation. zu at dx nv al vn wo rq bj np