M8 bolt torque. · Do not let the seat of a bolt or nut dent the contact area. 4 2. 8 Class 9. Clamp loads for Grade C lock . ) Torque Values Stainless Steel Bolt Table Chart. d. 25P0. 9 Class 12. 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. No torque specification for this nut. 3 8 21. 9 M8 x 1. 00 22 30 36 M10 x 1. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. The chart shows values for lightly oiled threads and 85% of the proof load. 25. 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. 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. . 50 120 165 200 M16 x 1. Nominal Size and Thread Pitch. Bolt Torque Calculator Calculate required bolt torque. 5: 58. For M8 bolts, the torque ranges from 28. 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. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). A short screw clamping plain metal components reaches the rated torque in only a fraction of a turn of the screw. 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. For A307 Grade A, 75% of 36,000 PSI is utilized. e. When you put the rockers back on, make sure the tappets are on base (valves closed) as you draw the shaft bolts tight. 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. 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. To properly torque the head bolts on the 2008 Chevy 5. 9 Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. 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 . Thread Coeff friction Preload (Kn) property class Tightening torque (Nm) property class Min. 0 Jun 16, 2020 · That is used on the surfaces between the cell contact face & busbar, not on the bolt threads. 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. 9, the clamp loads are listed at 75% of the proof loads specified by the standard. 0 in-lbs. 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. 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. 34 0. = Nominal Diameter. 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. Minimum Tensile Strength MPa. 9. 3. 50 360 510 610 calculating the suggested tightening torque is the same for machine screws as it is for bolts. nuts equal 75% . 75 mm (0. Lubed. 12. 14, Fine thread and course threads apply For example, M8 X 0. Torque-Tension Relationship for Metric Fasteners. 6 45. The chart shows the torque values for M8 and other common screw sizes and strength classes. 25 76 105 130 M14 x 1. 3 23. 4-7 Nm) in the numerical sequence shown above. 9 Grade Hex . 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). 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. 3 Mating Screw Recommended Tightening Torque, (N•m) (Assuming K=0. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. 0. 18: M8 x 1. Apply a small amount of engine oil to the threads of each head bolt. 8 6. 50 260 365 435 M20 x 1. In this case, 2. 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. Tightening torque to preload a bolt Metric thread : M1 M1. Bolt Torque Specs in Newton Meters - Nm. T = K F d (1 - l/100) (1) where . Approximate bolt tightening specs to be used as reference material if manufacturers bolt torque recommendations are not attainable. f. As … Continued SAE bolt grades indicate the strength of the bolt. By using this site, you consent to the use, by us and our partners, of cookies gathered from your use of our site. METRIC BOLT TORQUE CALCULATOR. 5 13. If the 4 bolts are rotated 90* the final torque between them will be just about identical or as close as humanly possible. NDL Plate Screw, PN: 004643-01. This listing may be useful when determining an appropriate de-rated torque value when engaging with lower proof-strength materials. 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. See full list on mechanicology. This shows torque values in Nm for property classes 50, 70 and 80 as shown in the table below. Lubed (For Metric Fine Thread Bolts and Screws) Based on coefficients of friction µ total of 0. 9 in-lbs. AFT Fasteners is your trusted source for fastener information. 1 4. 8 Square Head Set Screw Bare Steel; Close; Stainless Steel. 25 mm is the lead, and 0. 9 helpful information regarding Typical Dimensional and Torque Specifications of TORX Tools Nut drivers For use with External TORX Head Type Bolts. 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. many of the aluminum bolts don't look like they will even hold a post it note up !. You may need to pull the oil separator, not sure if it's in the way or not. lb. 8 5. The torque rate can vary considerably for the same diameter of screw. 0: 7. 8 Grade Hex . Torque values listed in foot-pounds . Improvised Torque Wrench Improvise a torque wrench with a luggage scale. 1 188 169 10 42 38 372 335 12 73 66 54 ft-lbs. 85 Inch-Cup Pt Set Screw Metric-Cup Pt Set Screw 1. 9, and Class 12. 0 6. You'll also need some thread chasers to clean the old thread locker out of the bolt holes. 100 Tightening Torque MA max (Nm) Property Classes Thread Diameter 8. This site uses cookies to enable several features including shopping carts and the collection of usage statistics. 7: M10 x 1. Find the tightening torque for metric thread fasteners in Nm and ft lbs. 48 5. 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. Install nut until it makes contact with the spring washer, then turn nut another half turn. Start by cleaning the threads of the head bolts and the bolt holes in the engine block to ensure proper engagement. Shop our huge selection of OEM, MRO, construction, industrial, and safety products. · The fatigue strength of bolt under repeated load should not exceed the specified tolerance. In developing this information, Fastenal has made a determined effort to present its contents accurately. 12. 2. 75 mm is the pitch. Wheel and tire fitment data. 8 Nm to 48. 8, 10. 25: 36. 69 1. 8. • Note: Always use new head bolts. 48 ft-lbs. Use Prevailing Torque All-Metal Nut chart if using this style of nut. 75 means an 8 mm (0. 0 0. Number of starts: Designated by “Ph”. 2 M1. 10: 10. 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. Includes links to buy from Monster Bolts. 12 contact points handle more torque than a hex head while a flange Press, weld, or S-M8-2ZI44. It is also important to consider thread preparation, which is discussed in detail in this article . Typical values for countersunk heads screws with hexagon/hexalobular socket or associated nut, friction coefficient µ = 0. 3 Nm depending on the property class. 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. 1 2. 1: 6. 8, 9. com Find the recommended maximum tightening torque for coarse threaded metric bolts of different sizes and grades. For example, M8 X Ph2. 3 engine, follow these steps: 1. 1040. Metric Bolts - Tightening Torques Recommended thightening torque metric bolts. 8 8. 9 12. = Clamp Load For J429 Grade 5 and 8, FNL Grade 9, A574, Class 4. 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. Jul 24, 2024 · Torque is a measure of the conversion of linear force to rotational force at some distance from the axis of rotation. M8 x 1. 6 M2 M3 M4 M5 M6 M8 M10 M12 M14 M16 M20 M24 M30 M36 M42 - 3. 0 20. Length. 7 5 5. 6, 8. 8 Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. Find the maximum recommended torque for coarse threaded metric steel bolts of different sizes and grades. b. Self Tapping Plastic DURO Screw, PN: 30737-01. 1 40. 0 69. Torque (Nm) Torque (ft-lbs) ISO 898-1 Property Class 8. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. The mechanic must be aware of the purpose of torque, and what torque and fastener preload are doing to the component joint. 6 2. 8 10. Tighten each bolt to 35 ft-lbs using the A cross-threaded bolt will not properly tighten even with a torque wrench. 50 180 250 300 M18 x 1. 0 Nominal Tightening Torque The following table shows the tightening torque for metric fine thread fasteners. See the reference section for details on the methodology and the equations used. 9 and 12. 12 contact points handle more torque than a hex head while a M8 M14 M16 M12 M11 Metric Threads Thread Size Tensile Class 10. 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. Refer to the charts to find the ideal tightening torque. 2 19. 8 9. 8, Class 10. 9 Socket Head . Only a very thin coating is used, no gobs of the stuff. govern lock nuts . Jul 6, 2019 · • Final Step: Torque the M8 cylinder head bolts to 24 lbf/ft (32 Nm) in the numerical sequence shown. The values in this torque chart refer to Metric Class 8. 1. T = wrench torque (Nm, lb f ft) K = constant that depends on the bolt material and size . 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. Original equipment and alternative options. 315″) thread with a pitch of 0. 6 6 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. 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. 1 31. 43 2. The values are just smaller. 8 Proof Load, Yield, & Tensile Chart GFC Engineering & Testing Center 1524 East 14 Mile Road • Madison Heights, MI 48071 • 248-307-0567 • www. 8, 8. Property Class. 75. 6 5. · 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. Ph must be a Fastenal is the largest fastener distributor in North America. Minimum breaking torque, (M B, min), for austenitic grade bolts and screws between M 1. Choose from our selection of M8 bolts in a wide range of styles and sizes. M6 - M16: 800 M20 - M30: 830. 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. Hex Head Products. 8, 5. Metric screw torque specifications for a large variety of fasteners. that's the alternator with the 4 M8 aluminum bolts holding it to the engine block Procedure for Torquing Head Bolts. 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. Clamp loads estimated as 75% of proof load for specified bolts. 9 Area Class 8. M6 Lock Nut PN: 005284-01. In practice, there are many different design factors that affect permissible torque including bolt type, thread engagement, material type, and tool accuracy. here's the N52 manual pic. 7 7. good to double triple verify . 3 48. M8 M10 M12 M14 M16 M20 M24 M30 M36 0. 8 77. 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. above 1". And draw them down evenly by hand. DIN 603 Carriage Bolts; DIN 479-8. 71220 10. 9 bolts. Cap Screw. The values shown in the chart are to be used as a mid-range guideline. We use cookies. 6: 8. External Sockets of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. 9; M8 x 1: 0. 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. 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. 10. 6 and M 16, (coarse threads), are shown in Table 8 of BS EN ISO 3506-1:2020. of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. Preloads and tightening torque for Metric ISO countersunk head steel screws with hexagon socket head or similar heads. 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. 0. 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. M8. You can also made an conversion from the unit Nm to ft lbs and also from ft lbs to Nm. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. 6 41. In the List you find the metric fine torque unit in Nm and ft lbs. 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. 9 8. 7 Nylock Nut PN: 003573-04. 8 28. This calculator uses a practical starting point for all threaded fastener tightening analysis and uses the basic elastic torque-tension equation. 8 m m. 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. Tighten each bolt to 10 ft-lbs using the same sequence. 1 6. ANSI Hardware Design Guide Design Torque and Force Calculations. Torque values for metric fasteners up through and including M8 are in inch-pounds; diameters M10 and larger are in foot-lbs. Dry. K = 0. Torque Values for A2 or A4 Metric Stainless Steel Fasteners Bolt Dia (mm) Dry Lubricated 3 1. 25 42 59 71 M12 x 1. 92. 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. Tighten each bolt to 20 ft-lbs using the same sequence. ** Torque values Jul 12, 2017 · 8 bolts in the lowers. If the “X P” is omitted, the pitch is defined by the Coase Pitch Series according to ISO-261. 6, 4. c. M4x0. IFI-100 does not . genfast. 03″ or 34 TPI). Tighten each bolt to 30 ft-lbs using the same sequence. 8 Torque (ft-lbs) ISO 898-1 Property Class 10. Metric Steel Bolts - Grades and Property Classes Metric steel bolts, screws and studs - proof and tensile strength. 10. Tighten each bolt to 25 ft-lbs using the same sequence. 1220. gknhpvodbkczovesqjmuqglkkoiuafkolfhukjlyfenwmtq