Lag Screws are typically used in heavy duty carpentry applications including lumber framing and anchoring equipment to wood such as machinery and large vices. Lag bolts screws cost a third of the price of structural screws. Grade: 316 Stainless Steel The Lag Screw is available in sizes ranging from 1/4" to 5/8". Marine Bolt Supply proudly offers a wide variety of stainless steel bolts in several sizes and styles such as hex head, socket style, carriage, and lag bolts. Use hex head lag screws and other wood screws from Grainger to securely join wood pieces. Lag screws in diameters listed in the above table do not require a gimlet point since too much torque would be required to install the large screws without drilling a pilot hole first. 9.1 -2-Fabrication and Assembly c 9.1.2.1 Provisions relating to the clearance hole of the shank and the lead hole size for the threaded portion of the lag screw have been part of the Specifi- A lag screw subjected to … Also known as lag bolts, they have a hex head for a secure grip with a wrench. Type 18-8 are standard grade, while 316 is a superior type often referred to as marine-grade steel. No matter the system used to grade the bolts, the higher the number means the stronger the bolt. A single 1/4" Grade 5 lag bolt, in a configuration like this, will fail at roughly 13,000 lbs. They press threads into material for a tight, secure hold. These screws are designed to penetrate and grip wood and can be used in dock and pier construction. Hex Bolt Identification, Markings and Strength Chart. Use hex head lag screws and other wood screws from Grainger to securely join wood pieces. Required Tools for this Project. Customer Resources. Origin: Import Similar to wood screw pilot holes, a lag screw pilot hole should have a smaller diameter than the actual screw.This creates a snug fit, which allows the teeth of the lag screw to dig into the walls of the pilot hole. Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs and similar pieces. Lag Bolts or lag screws are used for fastening in wood materials. Sku # 2323028. fasteners, Anchor Bolt and Construction Fastener Manufacturer. Additonal information on bolts is located at the bottom of the webpage Grade 5. 4.7 out of 5 stars 18. If you require a size that is not listed, Portland Bolt will manufacture them. One should consider longer than standard thread lengths for lag screws which are extremely long. Grade 2. Grade/Class. Grade 2 Low or medium carbon steel: 1/4" thru 3/4" 55,000: 57,000: 74,000: Over 3/4" thru 1 … The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Although the term “lag bolt” is often used to describe this product, technically they are a screw since lags are installed in wood by rotating the six-sided head. Stainless Lag Bolt/Screw Sizes 1/4, 5/16 and 3/8 diameter and up to 6 inch length stainless steel hex head lag bolts (screws) grade 18.8. The black color lends a low profile that blends in well with surroundings and matches the latest trends in hardware. $6.95. Even 1/8" lag screws (well down into "numbered" screw sizes) will have a shear strength of over 3,000 pounds. Compare Qty. Portland Bolt provides anchor bolts and nonstandard construction Click to add item "Grip Fast® 1/4" Grade 2 Zinc Hex Head Lag Screws" to the compare list. Click to see full answer. Sign up for our bi-monthly email newsletter for all the latest! Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. Grade 18.8 stainless steel lag bolts also known as lag screws. Unless otherwise specified, nonstandard lag screws manufactured by Portland Bolt will possess a semi-cone point rather than a gimlet or cone point. Portland Bolt & Manufacturing Company, Inc. A common, nonstandard lag screw manufactured by Portland Bolt is designed for radial reinforcement of glulam beams. Note: Hex lag screws larger than 3/4″ in diameter and all square lag screws are rarely available in the marketplace as a stock item. For most home and automotive applications, you won’t need anything more than a grade 8 bolt strength or metric class 10.9. Stainless lag bolt/screw pictures are a general representation and not an actual picture of … Bolts Bolt Size Bolt Supplier Cable Ties Cap Screws Carriage Bolts Cotter Pins Drill Bits Electrical Connectors Fastener Supplier Flange Bolts Flat Washers Grade 8 Bolts Grease Fittings Hardware Assortments Heat Shrink Tubing Hex Bolts Hex Nuts Hose Clamps J.I.S. Line 9057246 Hex Lag Screws, 1/2 in. Featuring a hex head, spaced threads and a gimlet point, lag screws are generally used in pre-drilled holes in wood, or with lag screw shields in a variety of materials. Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration. Get free shipping on qualified Grade 5 Lag Bolts or Buy Online Pick Up in Store today in the Hardware Department. These fully threaded lag screws, sometimes referred to as “stitch bolts”, are often several feet in length and prevent the laminations of a glued laminated beam from separating over time. Grade: ASTM A307 Lag Bolts for Wall Mounting a TV - Includes Heavy Duty Bolts and Washers. Grade 8. The lag thread is deeper and sharper than national coarse thread since it is designed to drive into wood and not to be used with a nut. Steel Bolts - SAE Grades - SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength; Steels - Endurance Limits and Fatigue Stress - Endurance limits and fatigue stress for steels; Threaded Bolt Stress Area - Threaded bolts tensile stress area; US Bolts - Head and Wrench Sizes - Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt 20 Pk (or more) Zinc Plated Steel 1-1/2" Long, 3/8" Medium Lag Screw … Class 12.9. Add To List Click to add item Grip Fast® 1/4" Grade 2 Zinc Hex Head Lag Screws to your list. Grade 8 bolts are used marine, military, aerospace, off-road vehicle markets and related mechanical applications where stress and strong load bearing pressure is required. Compare Click to add item "Grip Fast® 1/4" Grade 2 Zinc Hex Head Lag Screws" to the compare list. A full point is unnecessary since a pilot hole nearly as large as the root diameter o… Compare Qty. Lengths: 18″ maximum The minimum thread length shall be equal to one-half the nominal screw length plus 1/2″ or 6”, whichever is less. ISO standards for threads are: length is twice the diameter of the bolt plus ½ inch. Grade 18.8 stainless steel lag bolts also known as lag screws. Interior Wood Screw: Product Weight: 0.1067 UOM: each Notes. Lag screw bolts are used in place of standard wood screws whenever the mounting surface must bear a heavy load. Diameters: 1/2″ – 3/4″ Hot Dipped Galvanized Lag Screws. Lag Bolt, Hex Head, Grade 1, Galvanized Finish, 1/2 x 1... (Pack of 75) Item#: CB2203 Price: Log In. 18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic - free) lumber. Find Lag screws lag screws at Lowe's today. Get the best deals on Lag Screws when you shop the largest online selection at eBay.com. If you are looking for fully threaded bolts please call direct at 800-872-5557. Lag screws, also known as lag bolts, are used in wood construction for heavier load applications than most wood screws can support. How much weight can a lag bolt in a stud hold? Grade 316 stainless steel lag screws are significantly more corrosion resistant than 304 and are ideal in harsh and saltwater environments. Bottlescrew 5mm Lag Screw/Swage to suit 3.2mm wire Econ AISI 316A Lag/Swage Bottlescrew or Rigging Screw consists of one (1) threaded AISI 316 marine grade stainless steel Lag Screw and one (1) … #14 x 3" Construction Lag Screw Exterior Coated Torx/Star Drive Heavy Duty Structural Lag Screw Fa… FAST 'N FREE. Free shipping on many items ... (10) 5/16 x 4" 316 Stainless Steel Hex Head Lag Bolts Lag Screws MARINE GRADE. Part wood screw & part bolt—lag screws are a beast of their own. Finish: Plain and hot-dip galvanized. Grade 2 requirements for diameters ranging from 1/4" through 3/4" only apply to headed fasteners up to and including 6" in length, and to studs of all lengths. A hex head lag screw is a wood screw that is driven with a wrench instead of a screwdriver. A full point is unnecessary since a pilot hole nearly as large as the root diameter of the lag screw will need to be drilled prior to installation. Additionally, a gimlet point is designed for small diameter screws so they can be installed without a pilot hole. Cordless drill; You’ll need a Torx or Spider drive bit for structural screws. Class 8.8. 3/8" | 316 Stainless steel lag bolts in highly corrosion resistant 316 Grade Stainless Steel feature a Hex Head and are designed to be driven with a wrench or hex driver. Most of our inventory is available in both type 18-8 and 316 stainless steel bolts. Note that lag screws do not accept nuts as they are technically thick heavy duty wood screws with threads designed to cut into wood. Class 10.9. These sizes are readily available in the marketplace and Portland Bolt stocks many of them in varying quantities. ASTM A307 grade C has been replaced by ASTM F1554 grade 36. Threads will vary according to the individual bolt sizes and dimensions. They are made from grade 316 stainless steel for corrosion resistance and durability. 4.6 out of 5 stars 68. Portland Bolt manufactures lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. Hex lag screws are large wood screws. $14.80. Hanger Bolt, Steel, Zinc Finish, 5/16-18 x 2" (Pack of 50) Item#: 1157848 Price: Log In. Each grade has a specific bolt strength. Deck Plus hex lag bolts are a grade 2 bolt, perfect for exterior wood projects. Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs and similar pieces. Commonly used to secure wooden posts and beams, lag bolts are also used for various household type construction projects including attaching wood to masonry or concrete. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine #4*-----5.2-4.8-4.3 Order yours today! Fastener Strength. 1/4, 5/16 and 3/8 diameter and up to 6 inch length stainless steel hex head lag bolts (screws) grade 18.8. X 2 in., Grade 18-8 Stainless Steel, 25-Pack. Without a pilot hole, the heads of the screws will often break before the lag is properly installed. Stainless lag bolt/screw pictures are a general representation and not an actual picture of the product you will receive. 18-8 Stainless Steel Hex Head Screws for Wood. Hot dipped galvanized lag screws offer corrosion resistance to steel fasteners due to the molten zinc bath finishing process, creating a bonded alloy coating. 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