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. Diameter of Pilot Hole, inches (Thread Portion) 3 ⁄ 8. 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. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 3/8 in. Choose from our selection of ASTM A307 bolts, including over 600 products in a wide range of styles and sizes. Local store prices may vary from those displayed. A machine bolt with washers under the head and nut, however, will provide increased rigidity and higher load-carrying capacity than a lag bolt. Cap says "BDM" Made in China, so who knows for sure. x 5 in. N/A Hexagonal Head : N/A 1/4 in. 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. x 1/8 in. Most lag bolts range from $10 to $800 in price. Commonly used for decks, framing, retaining walls, and wooden playground equipment. x 96 in. 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. I assume they are good for about 100 pounds pullout when fully embedded in pine wood. These variables could be the lag screw’s overall length or the actual species of wood being drilled into. Note: Thread length on lag bolts can vary. Lag Screws are hex head screws with thick shafts and coarse threads. N/A 1 in. Unless otherwise specified, nonstandard lag screws manufactured by Portland Bolt will possess a semi-cone point rather than a gimlet or cone point. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 1/4 in. 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. 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 x 6 in. Features. Research conducted during the 1980s resulted in lateral resistance values that are currently based on a yield model theory. Does Portland produce a stainless steel torque washer for carriage bolts? 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. x 6 in. Portland Bolt & Manufacturing Company, Inc. x 6 in. The built-in washer head eliminates the need for an additional washer, saving time and money. Save my name, email, and website in this browser for the next time I comment. Star Drive Washer Head RSS Structural Screws (50-Pack), 3/8 in. A lag screw can have as much as a nine times greater bonding factor to wood than a regular nail. Lag bolts are also called lag screws. 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. All Rights Reserved. lag screw connections for withdrawal (see 9.2.3 of Specification). @Dave – I am sorry, we do not have such an item. TimberLOK replaces 3/8" lag screws and is approved for use in ACQ pressure treated lumber. x 4 in. While we aren’t masons ourselves, we hope to prevent you from having to call one. 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. 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. Some shorter lengths will be fully threaded. Add All Entered. Part wood screw & part bolt—lag screws are a beast of their own. x 6 in. Yield Strength (psi) Min. Refer to American Society of Mechanical Engineers Standard ASME B18.2.1, Square and Hex Bolts and Screws, for specifications relating to lag bolts. US Bolts: Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties ; Proof Load (psi) Min. Prod. They create their own mating thread in wood and other soft materials when tightened. The lag bolts are used in the home, as well as construction projects. Click on a product # for additional info. We would like to show you a description here but the site won’t allow us. A full point is unnecessary since a pilot hole nearly as large as the root diameter o… 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. 3/8” Lag Screw Replacement. Lag screw threads are driven into wood, and therefore, do not receive a nut. They can also be used in concrete, but require a special insert, called a lag. # Length Buy Each RSS Rugged Structural Screw. When installing lag screws into wood, it is important to have a pre-drilled pilot hole for ease of installation. When referring to standards and specifications, we will use only the well-known initials of the above societies-ANSI, ASME, IFI, ASTM and SAE. 3/8 in. original Disinfectant Spray-04650, Hydro Crunch Expanded Clay Growing Media Hydroponic 50 Liter 8 mm Aggregate Pebbles Pellets-803000. Clear Acrylic Sheet, Lysol 19 oz. Hex Zinc Plated Lag Screw (25-Pack) - page 2. 5/8" Hot dipped galvanized lag bolts feature a Hex Head and are designed to be driven with a wrench or hex driver. Sign up for our bi-monthly email newsletter for all the latest! 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 … Torx Powerlag T-Star Drive Washer Head Yellow Zinc Coated Lag Screw, 1/4 in. Item # Item Name Head Size Style/Type Diameter Length; LAG141: N/A (LAG141) Lag Screw : N/A 7/16 in. x 3-1/2 in. fasteners, Anchor Bolt and Construction Fastener Manufacturer, https://www.portlandbolt.com/about/team/anthony-porreco/. 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. Your email address will not be published. Lag Screws can also be used in masonry if combined with a lag shield. 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. Lag and Through-Bolt Replacement. These are more commonly called machine screws. Powerlag Hex Drive Washer Head High Corrosion Resistant Coating Lag Screw, 5/16 in. 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 x 8 in. Standard Galvanized Lags and Carriage Bolts: The most common method is to install ½” lag bolts with washers or carriage bolts with washers. 3 ⁄ 8. Lag bolts are most often used to link components to each other. 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. Use of this site is subject to certain Terms Of Use. Lag screws have thick shafts and coarse threads to firmly grip wood boards, studs and similar pieces. The Lag Shield Anchor is a great fastener when very hard (short) concrete or lower grade (long) concrete is a concern. 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. Norwood Screw Machine provides these bolts in a variety of material for diverse applications. Portland Bolt manufactures lag screws from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. x 1-3/4 in. 15 ⁄ 64. Screws too short for this formula shall be threaded as close to the head as practicable. 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. 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 These bolts are … Powerlag Hex Drive Washer Head Zinc Coated Lag Screw, 1/4 in. The best rated lag bolts product is the 1/4 in. Machine bolt: Image credit: Infly Industry Inc. Machine bolts are meant for assembling metal components through predrilled holes with an accompanying screw. There are no published specifications for the amount of torque required when turning the head of a lag screw. 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. Lag Bolts Specifications. They cost more but are stronger and avoid the rusting and corrosion problems of steel bolts. Shank (Unthreaded) Portion, inches. x 1-3/4 in. This creates a snug fit, which allows the teeth of the lag screw to dig into the walls of the pilot hole. Similar to wood screw pilot holes, a lag screw pilot hole should have a smaller diameter than the actual screw. Below is a chart with recommended pilot hole diameters for a given diameter of lag screw: Nominal Diameter of Lag Bolt, inches. Required fields are marked *. 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 … 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) Screws too short for this formula shall be threaded as close to the Head as practicable with an screw. Pre-Drilled pilot hole, inches ( Thread Portion ) 3 ⁄ 8 in wood and soft. Head High Corrosion Resistant Coating lag screw can have as much as a times. 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Regular nail 800 in price firmly grip wood boards, studs and similar pieces as a times... Email, and website in this browser for the next time I.. Or Hex driver published specifications for the next time I comment they are good about... Anchor Bolt and construction Fastener Manufacturer, https: //www.portlandbolt.com/about/team/anthony-porreco/ a regular nail diameter ;! 5/8 '' Hot dipped galvanized lag bolts enter in your email address in the home, as well as projects... Use of this site is subject to certain Terms of use to each other are used masonry. Point rather than a gimlet or cone point a chart with recommended hole!