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 … Grade 18.8 stainless steel lag bolts also known as lag screws. Line 9057246 Hex Lag Screws, 1/2 in. 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) … Grade/Class. 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 Hex lag screws are large wood screws. Lag Screws are typically used in heavy duty carpentry applications including lumber framing and anchoring equipment to wood such as machinery and large vices. 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. Hot Dipped Galvanized Lag Screws. 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 Without a pilot hole, the heads of the screws will often break before the lag is properly installed. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. 18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic - free) lumber. 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. 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. lag screw connections for withdrawal (see 9.2.3 of Specification). #14 x 3" Construction Lag Screw Exterior Coated Torx/Star Drive Heavy Duty Structural Lag Screw Fa… No matter the system used to grade the bolts, the higher the number means the stronger the bolt. Interior Wood Screw: Product Weight: 0.1067 UOM: each Notes. X 2 in., Grade 18-8 Stainless Steel, 25-Pack. Get the best deals on Lag Screws when you shop the largest online selection at eBay.com. Compare Qty. Additionally, a gimlet point is designed for small diameter screws so they can be installed without a pilot hole. Sign up for our bi-monthly email newsletter for all the latest! 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. Additonal information on bolts is located at the bottom of the webpage Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs and similar pieces. Portland Bolt manufactures lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. 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. Unless otherwise specified, nonstandard lag screws manufactured by Portland Bolt will possess a semi-cone point rather than a gimlet or cone point. Also known as lag bolts, they have a hex head for a secure grip with a wrench. Shop lag screws and a variety of hardware products online at Lowes.com. Class 8.8. Most of our inventory is available in both type 18-8 and 316 stainless steel bolts. 4.7 out of 5 stars 18. Use hex head lag screws and other wood screws from Grainger to securely join wood pieces. Cordless drill; You’ll need a Torx or Spider drive bit for structural screws. Lag screws, also known as lag bolts, are used in wood construction for heavier load applications than most wood screws can support. For most home and automotive applications, you won’t need anything more than a grade 8 bolt strength or metric class 10.9. Grade: ASTM A307 These screws are designed to penetrate and grip wood and can be used in dock and pier construction. Hot dipped galvanized lag screws offer corrosion resistance to steel fasteners due to the molten zinc bath finishing process, creating a bonded alloy coating. 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. Click to add item "Grip Fast® 1/4" Grade 2 Zinc Hex Head Lag Screws" to the compare list. If you are looking for fully threaded bolts please call direct at 800-872-5557. Grade 18.8 stainless steel lag bolts also known as lag screws. Lag bolts screws cost a third of the price of structural screws. 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. The black color lends a low profile that blends in well with surroundings and matches the latest trends in hardware. Diameters: 1/2″ – 3/4″ Type 18-8 are standard grade, while 316 is a superior type often referred to as marine-grade steel. A single 1/4" Grade 5 lag bolt, in a configuration like this, will fail at roughly 13,000 lbs. Free shipping on many items ... (10) 5/16 x 4" 316 Stainless Steel Hex Head Lag Bolts Lag Screws MARINE GRADE. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. They are made from grade 316 stainless steel for corrosion resistance and durability. Sku # 2323028. $14.07. Lag Bolt, Hex Head, Grade 1, Galvanized Finish, 1/2 x 1... (Pack of 75) Item#: CB2203 Price: Log In. ASTM A307 grade C has been replaced by ASTM F1554 grade 36. Order yours today! 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. They press threads into material for a tight, secure hold. Origin: Import 1/4, 5/16 and 3/8 diameter and up to 6 inch length stainless steel hex head lag bolts (screws) grade 18.8. Class 12.9. Customer Resources. Threads will vary according to the individual bolt sizes and dimensions. A full point is unnecessary since a pilot hole nearly as large as the root diameter o… Part wood screw & part bolt—lag screws are a beast of their own. Stainless lag bolt/screw pictures are a general representation and not an actual picture of … Hex Bolt Identification, Markings and Strength Chart. Class 10.9. Even 1/8" lag screws (well down into "numbered" screw sizes) will have a shear strength of over 3,000 pounds. Portland Bolt provides anchor bolts and nonstandard construction Copyright © 1996 -2020 Northeast Fasteners Co., Inc. 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Stainless lag bolt/screw pictures are a general representation and not an actual picture of the product you will receive. Note that lag screws do not accept nuts as they are technically thick heavy duty wood screws with threads designed to cut into wood. Required Tools for this Project. 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. $14.80. Grade 2. Portland Bolt manufactures lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. Lag Bolts for Wall Mounting a TV - Includes Heavy Duty Bolts and Washers. Grade 316 stainless steel lag screws are significantly more corrosion resistant than 304 and are ideal in harsh and saltwater environments. Grade 8. Find Lag screws lag screws at Lowe's today. Grade 2 Low or medium carbon steel: 1/4" thru 3/4" 55,000: 57,000: 74,000: Over 3/4" thru 1 … Hide. 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. fasteners, Anchor Bolt and Construction Fastener Manufacturer. Prime-Line 9054964 Hex Lag Screws, 1/4 in. FAST 'N FREE. Lengths: 18″ maximum A hex head lag screw is a wood screw that is driven with a wrench instead of a screwdriver. Add To List Click to add item Grip Fast® 1/4" Grade 2 Zinc Hex Head Lag Screws to your list. How much weight can a lag bolt in a stud hold? $6.95. Lag screw bolts are used in place of standard wood screws whenever the mounting surface must bear a heavy load. Unless otherwise specified, nonstandard lag screws manufactured by Portland Bolt will possess a semi-cone point rather than a gimlet or cone point. Hanger Bolt, Steel, Zinc Finish, 5/16-18 x 2" (Pack of 50) Item#: 1157848 Price: Log In. X 1-1/2 in., Grade 18-8 Stainless Steel, 25-Pack. 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. Prime-Line 9055040 Hex Lag Screws, 1/4 in. A common, nonstandard lag screw manufactured by Portland Bolt is designed for radial reinforcement of glulam beams. Use hex head lag screws and other wood screws from Grainger to securely join wood pieces. Hex Lag Screws, or Lag Bolts, are available in steel with a zinc or galvanized finish; and in 18-8 stainless steel. A hex head lag screw is a wood screw that is driven with a wrench instead of a screwdriver. Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration. Fastener Strength. 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. 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. Click to see full answer. 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. Grade 5. 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. Lag Bolts or lag screws are used for fastening in wood materials. Grade 8 bolts have the highest ratings with tensile strength of 150,000 psi. Portland Bolt & Manufacturing Company, Inc. 18-8 Stainless Steel Hex Head Screws for Wood. Compare Qty. A typical lag screw can range in diameter from 4 to 20 mm or #10 to 1.25 in (4.83 to 31.75 mm), and lengths from 16 to 200 mm or 1⁄4 to 6 in (6.35 to 152.40 mm) or longer, with the coarse threads of a wood-screw or sheet-metal-screw threadform (but larger). Grade: 316 Stainless Steel The Lag Screw is available in sizes ranging from 1/4" to 5/8". Get free shipping on qualified Grade 5 Lag Bolts or Buy Online Pick Up in Store today in the Hardware Department. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. 4.6 out of 5 stars 68. 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. These sizes are readily available in the marketplace and Portland Bolt stocks many of them in varying quantities. 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. Finish: Plain and hot-dip galvanized. Imported hex lag screws normally originate from Asia, possess a gimlet point, and meet the requirements of ASTM A307 Grade A. Portland Bolt can manufacture lag screws to meet other ASTM specifications or when the project requires domestically manufactured lag screws. 20 Pk (or more) Zinc Plated Steel 1-1/2" Long, 3/8" Medium Lag Screw … 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 of the lag screw will need to be drilled prior to installation.