M8 bolt torque. The chart shows the torque values for M8 and other common screw sizes and strength classes. 1 31. 10. DIN 603 Carriage Bolts; DIN 479-8. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. above 1". com Find the recommended maximum tightening torque for coarse threaded metric bolts of different sizes and grades. 16 for "lubricated" conditions Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM Metric ISO Countersunk head steel screws Torque Table. 0 20. 9 helpful information regarding Typical Dimensional and Torque Specifications of TORX Tools Nut drivers For use with External TORX Head Type Bolts. 75 means an 8 mm (0. 18: M8 x 1. f. Use Prevailing Torque All-Metal Nut chart if using this style of nut. Torque (Nm) Torque (ft-lbs) ISO 898-1 Property Class 8. c. This listing may be useful when determining an appropriate de-rated torque value when engaging with lower proof-strength materials. Torque values calculated from formula T=KDF, where Lubricated Clamp Load F based on 75% of Yield Dry Clamp Load F based on 40% of Yield to avoid Galling. T = wrench torque (Nm, lb f ft) K = constant that depends on the bolt material and size . 9 5 6 2 4 8 1 3 7 10 15 1413 11 12 Intake Side Exhaust Side Figure A Figure B Flywheel Bolts • Step 1: Torque the bolts to 1-5 lbf/ft (1. See full list on mechanicology. When applied to a bolt, this force becomes tension in the bolt threads, which in turn applies a clamping force (or load) between the two materials you are bolting together. 8 8. If the “X P” is omitted, the pitch is defined by the Coase Pitch Series according to ISO-261. Clamp loads for Grade C lock . 10. 00 22 30 36 M10 x 1. Nominal Size and Thread Pitch. This shows torque values in Nm for property classes 50, 70 and 80 as shown in the table below. com Proof Load, Yield & Tensile Strength Chart Metric Jun 4, 2004 · RE: Steel Bolts into Aluminum Torque Specs CoryPad (Materials) 4 Jun 04 13:10 FAQ725-536 provides the details for you to calculate an appropriate torque specification. 2 M1. 14, Fine thread and course threads apply For example, M8 X 0. IFI-100 does not . 8 Class 9. Metric Alloy Steel Thread-Locking Shoulder Screws Nov 26, 2019 · The frictional errors between bolts at 15'lbs is very small compared to say 30'lbs. Shop our huge selection of OEM, MRO, construction, industrial, and safety products. See the reference section for details on the methodology and the equations used. b. And draw them down evenly by hand. 100 Tightening Torque MA max (Nm) Property Classes Thread Diameter 8. As well as where a bolt is screwed into a weak part, another important reason for reducing the torque setting of a nut and bolt is if the bolt is carrying other loads. 14 118 106 87 78 16 180 162 133 119 18 258 232 190 171 20 370 333 273 246 22 485 437 358 322 24 Maximum pre-load (N) property class to ISO898/1 Maximum tightening Torque (Nm) property class to ISO898/1; Thread Coeff of friction 3. govern lock nuts . 17: INTRODUCTION TO TORQUE Friction in the Bolted Joint When a threaded fastener is tightened, the induced tension results in friction under the head of the bolt and in the threads. 1 6. 8 Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. DIN 931-A2/A4 / ISO 4014 Hex Head Cap Screw Part Thread; DIN 933-A2/A4 / ISO 4017 Hex Head Cap Screw Full Thread; Socket Head Products. Typical values for countersunk heads screws with hexagon/hexalobular socket or associated nut, friction coefficient µ = 0. Clamp loads estimated as 75% of proof load for specified bolts. 8 Grade Hex . In developing this information, Fastenal has made a determined effort to present its contents accurately. 25P0. Choose from our selection of M8 bolts in a wide range of styles and sizes. Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4. · The fatigue strength of bolt under repeated load should not exceed the specified tolerance. 6 M2 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 M42 - 3. 1 4. Jul 6, 2019 · • Final Step: Torque the M8 cylinder head bolts to 24 lbf/ft (32 Nm) in the numerical sequence shown. 25 76 105 130 M14 x 1. 69 1. Hex Head Products. Unlike most bolt torque charts, this particular chart also lists clamp loads and torque values that correspond with bolt material stresses of 10,000 and 25,000 psi regardless of fastener grade. 9 in-lbs. 1040. 0. Find the tightening torque for metric thread fasteners in Nm and ft lbs. Jan 12, 2023 · The WM8-22XE is one of the most popular M8 bolt in cams available, this cam not only made the earliest torque of the test but also the best average power throughout the curve. 8 6. d. 2. M6 Lock Nut PN: 005284-01. 8 Nm to 48. 0 in-lbs. Bolt Torque Calculator Calculate required bolt torque. 1220. 3 23. Dry. 43 2. Due to many variables that affect the torque-tension relationship like human error, surface texture, and lubrication the only way to determine the correct torque is through experimentation under actual joint and assembly conditions. You'll also need some thread chasers to clean the old thread locker out of the bolt holes. 9 bolts. 12 contact points handle more torque than a hex head while a flange Press, weld, or S-M8-2ZI44. 7 7. 20 - actual K value may vary) Metric Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in ISO 898-1. 6 2. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. In the List you find the metric fine torque unit in Nm and ft lbs. 9 and 12. As … Continued SAE bolt grades indicate the strength of the bolt. 71220 10. 1. Self Tapping Plastic DURO Screw, PN: 30737-01. lb. good to double triple verify . 85 Inch-Cup Pt Set Screw Metric-Cup Pt Set Screw 1. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. NDL Plate Screw, PN: 004643-01. M8. For M8 bolts, the torque ranges from 28. Tighten each bolt to 20 ft-lbs using the same sequence. Minimum breaking torque, (M B, min), for austenitic grade bolts and screws between M 1. 1 40. of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. 3 Nm depending on the property class. Start by cleaning the threads of the head bolts and the bolt holes in the engine block to ensure proper engagement. B - Bolts, Screws & Externally Threaded Fasteners C - Nuts, Inserts & Internally Threaded Fasteners D - Washers E - Rivets, Pins, Rods, Keys & Retaining Rings F - Furniture & Builders' Hardware G - Hose, Tube and Wiring Components Here's some great tightening torque data for you! Toggle navigation Bolt Diameter x Pitch Thread Stress M8 x 1. Turn nut until specified belt tension is 3 days ago · Wheel size, PCD, offset, and other specifications such as bolt pattern, thread size (THD), center bore (CB), trim levels for 2020 BMW M8. 9 Grade Hex . nuts equal 75% . Metric Steel Bolts - Grades and Property Classes Metric steel bolts, screws and studs - proof and tensile strength. Number of starts: Designated by “Ph”. Find the maximum recommended torque for coarse threaded metric steel bolts of different sizes and grades. 7 5 5. 12. M8 x 1. AFT Fasteners is your trusted source for fastener information. breaking torque; A1-50 A2-70 A4-80 A1-50 A2-70 A4-80 A1-50 A1-70 The Bolt Torque & Preload calculator can be used to calculate the torque required to achieve the desired preload on a bolted joint. Improvised Torque Wrench Improvise a torque wrench with a luggage scale. Cap Screw. 9 Area Class 8. 75 mm (0. 50 120 165 200 M16 x 1. 8 9. In this case, 2. 3 engine, follow these steps: 1. that's the alternator with the 4 M8 aluminum bolts holding it to the engine block Procedure for Torquing Head Bolts. 6 and M 16, (coarse threads), are shown in Table 8 of BS EN ISO 3506-1:2020. For A307 Grade A, 75% of 36,000 PSI is utilized. here's the N52 manual pic. Tighten each bolt to 30 ft-lbs using the same sequence. 75. many of the aluminum bolts don't look like they will even hold a post it note up !. Length. 8 28. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. 10: 10. 8, 9. You can also made an conversion from the unit Nm to ft lbs and also from ft lbs to Nm. 7: M10 x 1. Ph must be a Fastenal is the largest fastener distributor in North America. 12. No torque specification for this nut. The mechanic must be aware of the purpose of torque, and what torque and fastener preload are doing to the component joint. Torque values for metric fasteners up through and including M8 are in inch-pounds; diameters M10 and larger are in foot-lbs. 48 5. ANSI Hardware Design Guide Design Torque and Force Calculations. 9 Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Apply a small amount of engine oil to the threads of each head bolt. e. By using this site, you consent to the use, by us and our partners, of cookies gathered from your use of our site. 9 Class 12. The bolts & busbars as supplied by the various vendor can be different, usually, the busbars are copper (sometimes tin plated which is better) with stainless screws or bolts. 8, 10. Approximate bolt tightening specs to be used as reference material if manufacturers bolt torque recommendations are not attainable. 0 Nominal Tightening Torque The following table shows the tightening torque for metric fine thread fasteners. Includes links to buy from Monster Bolts. Lubed (For Metric Fine Thread Bolts and Screws) Based on coefficients of friction µ total of 0. 4 2. 0 0. 3 8 21. Calculating machine screw tightening torque values The most widely used formula for calculating threaded fastener tightening torque is: T = DKP Where: T = Torque (inch pounds and Newton meters; 1Nm = 9 in. 2 19. Lubed. 6 45. Property Class. 9 M8 x 1. 6, 8. genfast. 9 12. 8 77. If the 4 bolts are rotated 90* the final torque between them will be just about identical or as close as humanly possible. 9; M8 x 1: 0. To properly torque the head bolts on the 2008 Chevy 5. 25 42 59 71 M12 x 1. 8. DIN 912-A2/A4 / ISO 4762 Socket Cap Screw; DIN 7984-A2 Low Head Socket Cap Screw Aug 10, 2015 · Alu bolt torque image yes . 100: 19500 3) Alloy Steel Socket Shoulder and Alloy Steel Low Head Socket Head Cap Screw, torque values for inch series charts up through and including 5/16-in diameter are in inch-pounds; diameters 3/8-in and larger are in foot-lbs. 50 360 510 610 calculating the suggested tightening torque is the same for machine screws as it is for bolts. 9. 48 ft-lbs. 6 6 8. 12 contact points handle more torque than a hex head while a M8 M14 M16 M12 M11 Metric Threads Thread Size Tensile Class 10. ) Torque Values Stainless Steel Bolt Table Chart. The torque rate can vary considerably for the same diameter of screw. 3 48. The values are just smaller. 0 69. 3 Mating Screw Recommended Tightening Torque, (N•m) (Assuming K=0. Refer to the charts to find the ideal tightening torque. 03″ or 34 TPI). 92. The chart shows values for lightly oiled threads and 85% of the proof load. 25 mm is the lead, and 0. M8 M10 M12 M14 M16 M20 M24 M30 M36 0. Tighten each bolt to 35 ft-lbs using the A cross-threaded bolt will not properly tighten even with a torque wrench. Thread Coeff friction Preload (Kn) property class Tightening torque (Nm) property class Min. It is generally accepted that as much as 50% of the applied torque is expended in overcoming friction between the bolt head and the Also known as wheel and axle bolts, these metric screws have an unthreaded shoulder that acts as a shaft, so material attached to the threaded end can rotate. In practice, there are many different design factors that affect permissible torque including bolt type, thread engagement, material type, and tool accuracy. If you look at the thread of a bolt an think of it as a micrometer, a given rotation in degrees will always produce the same distance. 34 0. Torque values listed in foot-pounds . 0. 0 Jun 16, 2020 · That is used on the surfaces between the cell contact face & busbar, not on the bolt threads. 6 5. 8 10. Tightening torque to preload a bolt Metric thread : M1 M1. We use cookies. = Nominal Diameter. 6: 8. 8, 5. The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. The values shown in the chart are to be used as a mid-range guideline. . M6 - M16: 800 M20 - M30: 830. · Do not let the seat of a bolt or nut dent the contact area. 8 m m. Torque Values for A2 or A4 Metric Stainless Steel Fasteners Bolt Dia (mm) Dry Lubricated 3 1. 25: 36. Only a very thin coating is used, no gobs of the stuff. 9, and Class 12. It is also important to consider thread preparation, which is discussed in detail in this article . Metric screw torque specifications for a large variety of fasteners. 5 13. The XE did not make the highest peak numbers however it really puts the power down early but also stays in there late, its very responsive & really shines over the entire Tighten each bolt finger tight using the sequence in Figure 1. 50 180 250 300 M18 x 1. Minimum Tensile Strength MPa. 7 Nylock Nut PN: 003573-04. Wheel and tire fitment data. Details for Socket screw head size, Hex key or wrench drive size, hardness and tensile strengths for screws including Button Head, Socket Head Cap, Low Head Socket, Set Screws and Flat Head socket screws. 25. K = 0. You may need to pull the oil separator, not sure if it's in the way or not. 9, the clamp loads are listed at 75% of the proof loads specified by the standard. 8 Torque (ft-lbs) ISO 898-1 Property Class 10. 0 6. 9 Socket Head . METRIC BOLT TORQUE CALCULATOR. Bolt Torque Specs in Newton Meters - Nm. Tighten each bolt to 10 ft-lbs using the same sequence. Install nut until it makes contact with the spring washer, then turn nut another half turn. When the bolts are tightened to join the flanges together, the tightening of the bolts pre-loads them, using up some of the strength to squeeze the flanges together. Metric bolt torque calculator according to VDI 2230 standard for shank bolts with metric standard thread according to ISO 262; hexagonal bolts according to DIN EN ISO 4014 to 4018, hexalobular external driving head bolts according to DIN 34800 or cylindrical bolts according to DIN EN ISO 4762 and hole ”medium“ according to ISO 273 (DIN EN 20273). 1 188 169 10 42 38 372 335 12 73 66 54 ft-lbs. 8, 8. 0: 7. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). 8 Square Head Set Screw Bare Steel; Close; Stainless Steel. 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. Tighten each bolt to 25 ft-lbs using the same sequence. For example, M8 X Ph2. External Sockets of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. · The proper axial tightening force for a bolt should be calculated within an elasticity range up to Load 70% of the rated yield strength when the torque method is used. 6, 4. mended torque of the screw dimension and quality in ques-tion measured from the snug level – the point at which the components and the screw head become tight. ** Torque values Jul 12, 2017 · 8 bolts in the lowers. A short screw clamping plain metal components reaches the rated torque in only a fraction of a turn of the screw. T = K F d (1 - l/100) (1) where . 1 5 / 3 2 " 3 / 4 " 2 5 / 3 2 " 1 " 1 1 3 / 1 6 " 2 9 / 1 6 " 3 3 / 8 " 6 m m. Jul 24, 2024 · Torque is a measure of the conversion of linear force to rotational force at some distance from the axis of rotation. 75 mm is the pitch. Original equipment and alternative options. 8, Class 10. 8 Proof Load, Yield, & Tensile Chart GFC Engineering & Testing Center 1524 East 14 Mile Road • Madison Heights, MI 48071 • 248-307-0567 • www. 315″) thread with a pitch of 0. Preloads and tightening torque for Metric ISO countersunk head steel screws with hexagon socket head or similar heads. Metric Bolts - Tightening Torques Recommended thightening torque metric bolts. Some notes from ISO 898 metric screw threads standards: Accu's Recommended Tightening Torque Table For Stainless Steel Fasteners M8: 20: M10: 40: M12: 70: M14: 115: M16: 180 The values stated are taken from a Bolts and Screws. This calculator uses a practical starting point for all threaded fastener tightening analysis and uses the basic elastic torque-tension equation. Torque-Tension Relationship for Metric Fasteners. 50 260 365 435 M20 x 1. M4x0. When you put the rockers back on, make sure the tappets are on base (valves closed) as you draw the shaft bolts tight. 8 5. d = nominal bolt diameter (m, ft) F = axial bolt force (N, lb f) l = lubrication factor (%) Preload (N) property class to ISO 898/1 Tightening torque (Nm) property class ; Thread Coefficient friction 8. 6 4. Force Required to Strip the Bolt Threads Formula and Calculator ; Threaded Hole Fastener Pullout Stress ; Self Tapping Screw Pull-Out and Torque Calculator ; Bolt Preload Tension Equation and Calculator ; Bolt Preload Tension Force Calculator ; Torque Table Standard Bolt Sizes SAE Grades 1 - 8 ; Torque Values Stainless Steel Bolt Table Chart Tightening torques for stainless steel bolts Introduction. 5: 58. The values in this torque chart refer to Metric Class 8. = Clamp Load For J429 Grade 5 and 8, FNL Grade 9, A574, Class 4. This site uses cookies to enable several features including shopping carts and the collection of usage statistics. 1 2. 6 41. 1: 6. 9 8. • Note: Always use new head bolts. 3. 4-7 Nm) in the numerical sequence shown above. mkfqyzluholfeikzhsynvrmdqkypmmxynkwxslegsqfqwktgkycn