Location: Charleston, United States. Grade F is roughly equivalent to Grade 5 and Grade F nuts are used with Grade 5 bolts. Generally, the price of high-strength bolts will be much higher than that of ordinary bolts. Grade 10.9 bolts: As these bolts are most often used in the automotive industry, they are also referred to as car bolts. Grade 8 bolts have 6 evenly spaced radial lines on the head. Grade 5 bolts are great for shearing forces, but are lousy under pulling or compressing forces because they can stretch or compress. Is Grade 8 or 10.9 stronger? Grade 2 bolts are cheap but not very strong, grade 8 bolts are the strongest and most expensive, and grade 5 bolts are the most common. Well the engine stand has 4 mounting points and I'm going to use all of them. 9,276. Grade 8.8 bolts are used in railroad equipment, motors, engines, and processing equipment. Depend on grade 8 hex flange bolts for use in applications that are demanding. Get free shipping on qualified Grade 8 Hex Bolts products or Buy Online Pick Up in Store today in the Hardware Department. Grade 5 fasteners are made from medium-carbon steel that has been quenched and tempered. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Aren't grade 8 bolts with full thread a special bolt? Works just the opposite if you reverse the situation. Manufacturer of High Tensile Grade 4.8 Hex Head Bolt and Class 4.8 Stud Bolts in India. This is a metric nut grading similar to the SAE grade 8 classification, which is used in conjunction with Class 10.9 bolts. Youll Find fine thread bolts in those places where specific types or specific grades of bolts are needed. 8.8 is the equivalent of a Grade 5 and 10.9 is the equivalent of Grade 8. Free Shipping. Thus they are stronger and are used in demanding applications such as automotive suspensions. High tensile Grade 8 bolt capability in tension (failure) = 150,000 lbs / in2 x .03349 in2 = 5024 lbs minimum. Never use any threaded fastener below a Grade 5 (or 8.8 metric) for any automotive application, regardless of the area of use. Re-use Of Original/Used Spring U-Bolts Is Not Recommended Due To Fatigue and Stretching When U-Bolt Was Originally Torqued. #8. Lock Nut. my Low tensile for Metric is class 4.6. Pro-Grade Multi-Purpose Grease Cartridge is the best choice for high quality lubrication and corrosion protection. Leaf Spring U Bolt Kits For Heavy Trucks, Medium and Light Duty Trucks And Auto Applications. Steel fasteners are commonly available in 4 grades:Grade 2,Grade 5,Grade 8,and alloy steel.Many other grades exist but are used far less often. It is commonly found in high strength automotive applications. It is commonly found in automotive applications. Class 10.9 is similar to grade 8. Zinc plated grade 8 steel yellow. The manufacturer used grade 8 boltsso yes grade 8 would be fine except for the most extreme cases such as very high compression or a full race engine in which case I would go with ARP bolts. Theyre best for heavy loads and high stress. Each grade has a specific bolt strength. All America Threaded Products will dual certify to ASTM A354 BD and SAE J429 Grade 8. Grade 8 bolts are usually found in critical fastening applications, such as suspension parts, cylinder head bolts and flywheel bolts.

Photo 2. A good example is the bolt used to attach the steering column to the steering gear box. The flange distributes pressure over the surface, eliminating the need for a washer. Also known as hex cap screws or machine bolts. Alloy steel Grade 8 bolts are great for tensile strength where pulling or compressing forces are applied, But are brittle under shearing forces. Condition: New. A bolt with a six sided head. The automotive OEMs use what it needs to be safe and nothing more since there is a difference in cost between grade 5 and grade 8 (or metric 8.8 and 10.9). There are several grades of bolts but the most common for SAE are 2, 5, and 8. 10 indicates 1/100 of the tensile strength of the bolt, which means that the tensile strength of this grade of bolt must reach 1000MPa, which may actually be higher than 1000MPa. High-Strength Grade 8 Steel Square-Neck Carriage Bolts Made from Grade 8 steel, these bolts can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Grade G is roughly equivalent to Grade 8. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking.

this is why, single shear and double shear tables are available for bolted connections. Grade 8.8 Bolts are manufactured using medium carbon steel that has been quenched and tempered. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. View Profile View Forum Posts GRADE 8 HEX HEAD CAP SCREW / BOLT YELLOW ZINC. Each grade has a specific bolt strength. Used in railroad equipment, motors, engines and processing equipment, grade 8.8 bolts exhibit Class 8.8 is similar to grade 5. Carriage bolts have a smooth, rounded head for a finished look. Reaction score. Is Grade 8 or 10.9 stronger? Common uses for grade 8 bolts are for military, aerospace, or marine related mechanical applications where high stress and strong load bearing pressures are a major factor. These bolts come in two different size ranges 1/4 to 1 and 1 to 1 1/2, which have the proof load of 85000 psi and 74000 psi respectively. Grade 8.8 10.9 ASTM A325 High Strength Hot Dip Galvanized Hex Bolt and Nuts. Fastenal Uses Cookies to Improve User Experience. Find many great new & used options and get the best deals for Qty 2 Hex Head Bolt 3/8" UNF x 2" Black High Tensile Grade 8 Screw at the best online prices at Cheap Price with Best Quality, Easy Return. First, the Hitch Pin is not being steched, so there is no tension load on the length of the pin, the only load is in "Shear". Bolts with yellow zinc coating finished in Haihao Group. A Grade 8 has a very high tensile strength, but can be brittle. Are Grade 8 bolts more brittle than Grade 5? 8. A fastener (US English) or fastening (UK English) is a hardware device that mechanically joins or affixes two or more objects together. 18-8 stainless steel head marks indicates 18% chromium - 8% nickel. The automotive OEMs use what it needs to be safe and nothing more since there is a difference in cost between grade 5 and grade 8 (or metric 8.8 and 10.9). Type T-Slot Bolt System of Measurement Inch Slot Width (Inch) 5/8 Length Under Head (Inch) 2-3/4 Thread Size 5/8-11 Material Steel MSC #: 01841709. Online shopping for Industrial & Scientific from a great selection of Hex Bolts, Carriage Bolts, Eyebolts, Expansion Bolts, U-Bolts, Square Head Bolts & more at everyday low prices. Grade 8 bolts. Buy It Now. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Grade G nuts are used with Grade 8 bolts. Hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Product Name. Is Grade 8 or 10.9 stronger? You probably need a standard and metric set. There's no such thing as a grade 10. We supplied to following Locations. Alloy Steel Blaster 14 oz. Automotive fasteners are a collection of products that are used in automotive and vehicle assembly. Motor Mount Bolt. They are made of boron or carbon steel and have high tensile strength (1040 MPa). We've all heard discussions about Grade 5 vs Grade 8 bolts, including the oft-espoused opinion that Grade 8 bolts are more brittle than Grade 5, so generally shouldn't be used unless specified. It is made of alloy steel and has six radial lines on the top of the bolt head. Grade 8 bolts have a tensile strength of 150,000 pounds per square inch. We recommend using grade 8 nuts, flat washers and high alloy lock washers with any grade 8 bolts / hex cap screws. Like pliers, wrenches are necessary for practically every automotive project. 5135 Piece Grade 8 USS Bolt Assortment Hex Head Cap Screws, Flat and Lock Washers, Hex and Lock Nuts with (2) 40 Hole Bins 4.2 out of 5 stars 32 $899.99 $ 899 . The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Thus they are stronger and are used in demanding applications such as automotive suspensions. Grade 8 works better in pull situations. For critical engine situations such as cylinder-head bolts and differential gearsets, the Grade 8 bolt is the way to go, where proper torqueing preloads the clamped joint with minimal bolt stretch. Hex flange bolts are greatly used in areas that are hard to reach since the flange does the work of a washer in distributing pressure. While you are it, buy an adjustable wrench for the odd occasion when a bolt or nut falls between sizes. The square neck keeps these bolts from turning when tightening a nut. ASTM A354 BD is used for structural bolts, while SAE J429 Grade 8 is an automotive specification. Stainless steel 316 (A-4) Also known as A-4 stainless, 316 is a highly corrosion resistant grade of stainless steel. We recommend using grade 8 nuts, flat washers and high alloy lock washers with any grade 8 bolts / hex cap screws. That bolt is always Grade 8 and uses SAE threads. Using fine-thread fasteners is especially important for automotive applications due to the many inherent vibrations sent throughout the vehicle while in motion.

Grade 8 bolts have a high tensile strength rating due to its medium-carbon alloy steel composition that has Car Fluids & Chemicals. Welding is an example of creating permanent joints. Add to Cart. Hard-to-Find Fastener 014973240226 Grade 8 Coarse Hex Flange Bolts, 3/8-16 x 1, Piece-50 The specification for Iso Class 4.8 standard covers Grade 4.8 fasteners like Bolts/Screws/Studs. The most common high tensile bolts are: Grade 8.8 bolts: Also known as structural grade bolts, they are typically made of steel and plated with several coatings. Differential Shaft Lock Bolt. Grade G is roughly equivalent to Grade 8. Grade 8 is "stronger" as in tensile strength or force it takes to break it, but when they go the snap.

The off road vehicle market also has a need for grade 8 bolts ; Grade 8 Square Bend U-Bolt Kits Come With (2) U-Bolts, Deep Nuts And Thick Washers. Always match bolts and nuts of comparable grades (use a Grade 8 nut with a Grade 8 bolt; use a metric grade 10 nut with a 10.9 grade bolt, etc.). The tensile strength of Search: Grade 8 Bolts. Each grade has a specific bolt strength. Each grade has a specific bolt strength. Cookies are not used for the processing, collection or storage of personal data under any circumstances. Grade 8 bolts have 6 evenly spaced radial lines on the head. Steel fasteners are usually made of ultimate shear strength. I also am a big fan of using a grade eight bolt, my receiver is 2.5 inch, but same 5/8 bolt I use a flange bolt with a hard washer, and a flange nut, with a hard washer. To improve its resistance to corrosion, it may receive additional finishesand coatings. $. 7350 PIECE GRADE 8 ZINC YELLOW COARSE THREAD.