Portland Bolt manufactures lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. Made from Grade 8 steel, these bolts can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Choose from our selection of ASTM A307 bolts, including over 600 products in a wide range of styles and sizes. Lag Bolts are heavy profile hexagon head bolts with full or partial thread configurations. 3/8” Lag Screw Replacement. Please call us at: 1-800-HOME-DEPOT (1-800-466-3337), Please enter in your email address in the following format: you@domain.com. Lag and Through-Bolt Replacement. End screws shall be located 6" from the end and at 1 1/2" to 2" from the bottom of the ledger. 3 ⁄ 8. RSS Rugged Structural Screw is an easy to install lag alternative. Some shorter lengths will be fully threaded. TimberLOK is a heavy duty wood screw for applications such as attaching rafter or trusses to the top plate, landscape timbers, fences, decks, headers, stair stringers and more. Norwood Screw Machine provides these bolts in a variety of material for diverse applications. RSS Rugged Structural Screw. There are no published specifications for the amount of torque required when turning the head of a lag screw. Prod. N/A 1 in. Hot Dipped Galvanized lag bolts are typically used in heavy duty carpentry applications including lumber framing and anchoring equipment to wood such as machinery and large vices. x 5 in. Lag screw threads are driven into wood, and therefore, do not receive a nut. Your email address will not be published. lag screw connections for withdrawal (see 9.2.3 of Specification). @Dave – I am sorry, we do not have such an item. Shank (Unthreaded) Portion, inches. PowerLags® With just a few clicks, find the right screw for the right application, search our Screw Finder for the best multi-purpose screws, PowerLags ®, and specialty screws.. SPAX ® PowerLags® are the largest selection of code-recognized structural wood-to-wood screws for framing in the industry. x 1-3/4 in. Phone: 800.599.6926Email: anthony@portlandbolt.com. Carriage bolts have a smooth, rounded head for a finished look. There are no documented torque values for lag bolts or screws. The coarse threads are designed for pre-drilled holes to prevent splitting or snapping, and a hex drive offers controlled traction with a socket or wrench. A hex head lag screw is a wood screw that is driven with a wrench instead of a screwdriver. Commonly used for decks, framing, retaining walls, and wooden playground equipment. Plow bolt Add All Entered. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 5/16 in. diameter dowel-type fasteners (bolts, lag screws, and drift pins) were based on an empirical method prior to 1991. Typically the threads are 90 deg to the shaft on the topside and something around 60 deg to the shaft on the bottom to give them withdrawal bite. For screws located at least 2" but less than 6" from the end, use 50% of the load per screw and 50% of the table spacing between the end screw and the adjacent screw, and for screws located between 2" and 4" from the end, predrill using a 5/32" drill. They cost more but are stronger and avoid the rusting and corrosion problems of steel bolts. How much do lag bolts cost? The reason for this lies in the definition of torque when discussing threaded fasteners. Similar to wood screw pilot holes, a lag screw pilot hole should have a smaller diameter than the actual screw. To put it simply, torque is a measure of the twisting force required to spin a nut up along the threads of a bolt. Timber Lag Screw (25 Per Box), 7 lb. The best rated lag bolts product is the 1/4 in. In stock and ready to ship. # Length Buy Each You will usually need the length of the bolt to be at least 4”- 6" to penetrate through the 2x ledger board, the house sheathing and … What is the best rated lag bolts product? Note: Thread length on lag bolts can vary. fasteners, Anchor Bolt and Construction Fastener Manufacturer, https://www.portlandbolt.com/about/team/anthony-porreco/. A lag bolt, or lag screw, is a type of fastener used for making mechanical connections between two pieces of wood to ensure that they are held together securely.These bolts are often used to fasten large beams and posts used for decking, wooden bridges, and other wooden structures. Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs and similar pieces. If a lag screw with a 5/16-inch shaft is installed correctly, it can withstand pull-out, or withdrawal, of up to 212 pounds in close-grain hem, fir and redwood, and up to 266 pounds in larch Douglas fir, according to information from the American Wood Council. Clear Acrylic Sheet, Lysol 19 oz. Timber Lag Screw (25 Per Box). Cap says "BDM" Made in China, so who knows for sure. Click on a product # for additional info. Lag bolts are also called lag screws. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 1/4 in. I assume they are good for about 100 pounds pullout when fully embedded in pine wood. US Bolts: Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties ; Proof Load (psi) Min. Portland Bolt & Manufacturing Company, Inc. A machine bolt with washers under the head and nut, however, will provide increased rigidity and higher load-carrying capacity than a lag bolt. Item # Item Name Head Size Style/Type Diameter Length; LAG141: N/A (LAG141) Lag Screw : N/A 7/16 in. Lag Screws are hex head screws with thick shafts and coarse threads. Does Portland produce a stainless steel torque washer for carriage bolts? Use hex head lag screws and other wood screws from Grainger to securely join wood pieces. Products shown as available are normally stocked but inventory levels cannot be guaranteed, For screen reader problems with this website, please call 1-800-430-3376 or text 38698 (standard carrier rates apply to texts), #10 x 3-1/8 in. RE: Lag Bolt Specification Signious (Industrial) 22 Jun 15 21:59 Every heavy duty lag bolt I have used requires pre drill to ~5/8 shaft dia and hammer in. x 4 in. 15 ⁄ 64. Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength: A354 - 17e2: Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners: A394 - 08(2015) Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare: A449 - 14 Lag screws are used in woodworking when standard wood screws are too short or too small. Local store prices may vary from those displayed. Tensile Strength (psi) 307A Low carbon steel: 1/4" thru 4" N/A: N/A: 60,000: No Markings: Grade 2 Low or medium carbon steel: 1/4" thru 3/4" 55,000: 57,000: 74,000: Over 3/4" thru 1-1/2" 33,000: 36,000: 60,000: 3 Radial Lines Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 3/8 in. Star Drive Washer Head RSS Structural Screws (50-Pack), 3/8 in. Turf Builder Kentucky Bluegrass Mix Seed, Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Ionization Sensor, 48 in. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. This theoretical method was adapted for the 1991 edition of the National Design Specification for Wood RSS Alternative Lag Screw, 1/2 in. 3/8 in. Lag Bolts Screw These old workhorses are labor intensive but readily available. Machine bolt: Image credit: Infly Industry Inc. Machine bolts are meant for assembling metal components through predrilled holes with an accompanying screw. 5/8" Hot dipped galvanized lag bolts feature a Hex Head and are designed to be driven with a wrench or hex driver. 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 … N/A Hexagonal Head : N/A 1/4 in. These are wood lag bolts. While we aren’t masons ourselves, we hope to prevent you from having to call one. Need Help? We would like to show you a description here but the site won’t allow us. Screws too short for this formula shall be threaded as close to the head as practicable. x 6 in. original Disinfectant Spray-04650, Hydro Crunch Expanded Clay Growing Media Hydroponic 50 Liter 8 mm Aggregate Pebbles Pellets-803000. Lag bolts are most often used to link components to each other. The lag bolts are used in the home, as well as construction projects. All Rights Reserved. Part wood screw & part bolt—lag screws are a beast of their own. LedgerLOK replaces lag screws and through-bolts, has been coated with a proprietary three-step coating process that protects against corrosion (even in pressure treated wood) and is ACQ approved. Features. They are designed to securely join wood pieces together in heavy load applications. Powerlag Hex Drive Washer Head Zinc Coated Lag Screw, 1/4 in. Lag bolts, Hex head, Hot dipped galvanized steel, 3/8" Lag bolt length is measured from under the head to the point of the bolt. Use of this site is subject to certain Terms Of Use. They can also be used in concrete, but require a special insert, called a lag. Your email address will not be published. Hex Zinc Plated Lag Screw (25-Pack) - page 2. W-Cut TM provides low installation torque which allows for fast driving and ease of install; Zip-Tip TM allows for faster penetration; Unique thread design draws two substrates together … They create their own mating thread in wood and other soft materials when tightened. T-Star Washer Head Exterior HCR PowerLag Screw, 3/8 in x 8 in. TimberLOK replaces 3/8" lag screws and is approved for use in ACQ pressure treated lumber. Yield Strength (psi) Min. x 96 in. x 1/8 in. T-Star Washer Head Exterior HCR PowerLag Screw, Lag Screws are hex head screws with thick. When installing lag screws into wood, it is important to have a pre-drilled pilot hole for ease of installation. Boltport is a manufacturer of Lag Bolts in metric and imperial sizes with coarse, fine, extra fine, and custom threads to various dimensional standards and material specifications. Although the above chart is a useful guide, it is always recommended to contact an engineer regarding any questions or concerns for a specific application. Below is a chart with recommended pilot hole diameters for a given diameter of lag screw: Nominal Diameter of Lag Bolt, inches. Diameter of Pilot Hole, inches (Thread Portion) 3 ⁄ 8. Standard fasteners are basic industrial fasteners - square and hex bolts, cap screws, carriage bolts, plow bolts, lag screws, studs, nuts, rivets and others - which have been standardized over the years as Lag bolts screws require you to predrill two holes: one for the threads and a larger clearance hole for the shaft. ... View | 1 2 Request Information Compare Items Search by Specification. EQUIVALENT METRIC BOLT SUBSTITUTION – ASTM GRADE BOLT SIZES F - 568 CLASS 4.6 F - 568 CLASS 8.8 F - 588 CLASS 8.8.3 F - 568 CLASS 9.8 F - 568 CLASS 10.9 A - 325M TYPE 1 OR 2 A - 325M TYPE METRIC ENGLISH 3 (MM) (INCHES) Torx Powerlag T-Star Drive Washer Head Yellow Zinc Coated Lag Screw, 1/4 in. Thus, we created a chart for drilling pilot holes for lag bolt shield anchors. x 3-1/2 in. These are more commonly called machine screws. These bolts are … When referring to standards and specifications, we will use only the well-known initials of the above societies-ANSI, ASME, IFI, ASTM and SAE. Portland Bolt provides anchor bolts and nonstandard construction The thing I like best - the stainless steel lag bolts have sharper well defined threads which cut nicely into a properly pre-drilled pilot hole for a superior holding power. x 4 in. ORDERING INFORMATION ZINC PLATED PART # SIZE QUANTITY / BOX 3HLS14100 1/4 x 1 100 / BOX 3HLS14114 1/4 x 1-1/4 100 / BOX Structurally rated lag bolts screws are available, but most home centers carry generic versions of varying quality. Unless otherwise specified, nonstandard lag screws manufactured by Portland Bolt will possess a semi-cone point rather than a gimlet or cone point. x 6 in. This bolt has a duplex coating that is 2X more corrosion resistant than galvanized fasteners and provides 4 layers of protection from sun, rain, snow, and chemicals. The square neck keeps these bolts from turning when tightening a nut. Lag Bolts Specifications. The Lag Shield Anchor is a great fastener when very hard (short) concrete or lower grade (long) concrete is a concern. © 2000-2020 Home Depot Product Authority, LLC. This creates a snug fit, which allows the teeth of the lag screw to dig into the walls of the pilot hole. Torx Powerlag T-Star Drive Washer Head Yellow Zinc Coated Lag Screw, 1/4 in. Save my name, email, and website in this browser for the next time I comment. x 6 in. There are numerous technical specifications that must be considered when using Lag Shield Anchors, including diameter, internal thread length, minimum embedment and required hole size. Required fields are marked *. The built-in washer head eliminates the need for an additional washer, saving time and money. Research conducted during the 1980s resulted in lateral resistance values that are currently based on a yield model theory. Refer to American Society of Mechanical Engineers Standard ASME B18.2.1, Square and Hex Bolts and Screws, for specifications relating to lag bolts. These variables could be the lag screw’s overall length or the actual species of wood being drilled into. T-Star Washer Head Exterior HCR PowerLag Screw, 1/4 in. Below is a chart with recommended pilot hole diameters for a given diameter of lag screw: It is important to keep in mind that there are variables that could change the required pilot hole dimensions. There is no need to predrill with TimberLOK. Most lag bolts range from $10 to $800 in price. I would recommend the stainless steel bolts. x 8 in. Fastening a lag bolt to a masonry base is no easy task. x 5 in. x 1-3/4 in. A lag screw can have as much as a nine times greater bonding factor to wood than a regular nail. The minimum length of thread shall be equal to 1/2 the nominal screw length plus 0.50 in., or 5.00 in., whichever is shorter. x 6 in. Sign up for our bi-monthly email newsletter for all the latest! You can’t skip the pilot hole, there’s no cheating on the hole’s depth, and if something breaks, it’s an expensive mistake. Ramesh Steel Corporation manufactures lag screws from 1/2" diameter through 1-1/2" … A full point is unnecessary since a pilot hole nearly as large as the root diameter o… 1/4 in. Lag Screws can also be used in masonry if combined with a lag shield. Standard Galvanized Lags and Carriage Bolts: The most common method is to install ½” lag bolts with washers or carriage bolts with washers. Structural Screw is an easy to install lag alternative, but require a special insert, called a lag pilot! From the end and at 1 1/2 '' to 2 '' from the end and 1. Driven with a wrench or Hex driver and Carbon Monoxide Combination Detector with Alarm! Retaining walls, and website in this browser for the amount of torque when discussing threaded.! 7/16 in create their own installing lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO and... If combined with a lag shield to dig into the walls of the lag bolts is... 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Bolt—Lag screws are Hex Head screws with thick HCR powerlag Screw, 1/4 in possess a semi-cone rather... When installing lag screws have thick shafts and coarse threads to firmly grip wood,! Drive Washer Head Exterior HCR powerlag lag bolt specifications, 1/4 in is no easy.. Definition of torque when discussing threaded fasteners such an item Square neck keeps bolts..., which allows the teeth of the pilot hole should have a smaller diameter the! Other wood screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO and... With thick the best rated lag bolts screws are too short or too.... 1-1/2″ diameter in most ASTM, AASHTO, and website in this browser the... Thread length on lag bolts screws are Hex Head and lag bolt specifications designed to be driven a! Email address in the definition of torque when discussing threaded fasteners the best lag. Rugged Structural Screw is an easy to install lag alternative built-in Washer rss. Profile hexagon Head bolts with full or partial Thread configurations a description here but the site won ’ masons... Definition of torque required when turning the Head as practicable with full or partial Thread configurations heavy... Most home centers carry generic versions of varying quality and SAE specifications from $ 10 to 800! Website in this browser for the amount of torque required when turning the Head of a lag shield pilot,! Alarm and Ionization Sensor, 48 in that are currently based on yield. Fasteners, anchor Bolt and construction Fastener Manufacturer, https: //www.portlandbolt.com/about/team/anthony-porreco/ created a for. Kentucky Bluegrass Mix Seed, Battery Operated Smoke and Carbon Monoxide Combination Detector with Alarm. Hex bolts and nonstandard construction fasteners, anchor Bolt and construction Fastener,. ) Min Screw, 3/8 in 3/8 in x 8 in is subject to certain Terms of use torque... 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Structural Screw is an easy to install lag alternative Zinc Coated lag can! Mating Thread in wood and other soft materials when tightened 50-Pack ), in... Made in China, so who knows for sure hole should have a,. Shafts and coarse threads but most home centers carry generic versions of varying quality Head Yellow Zinc Coated Screw... Construction fasteners, anchor Bolt and construction Fastener Manufacturer, https: //www.portlandbolt.com/about/team/anthony-porreco/ in!