SAE Grade 2, 5 and 8
1/4" to 1-1/2", UNC and UNF, dry and oiled.
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Torque specs for bolts and lug nuts
Standard bolt charts tighten a bolt to 75% of its proof load: a 1/2-13 Grade 5 bolt takes about 75 ft-lb dry or 57 ft-lb oiled, and an M10 class 8.8 bolt about 50 N·m dry. Lug nuts take the value in your vehicle’s owner’s manual.
Popular:
- vehicles, each from its manual
- 443
- owner’s manual pages read
- 3995
- bolt sizes, inch and metric
- 28
- bolt grades and classes
- 7
Bolt torque calculator
SAE and metric
3/8-16 Grade 5, dry, plain steel
30.9ft-lb41.9N·m
- Clamp load
- 4,941 lbf (22.0 kN)
- Proof load
- 6,588 lbf
See every step of the working, set your own preload, or enter a nut factor.
Sources checked
From the owner’s manuals
Lug nut torque by vehicle
3995 owner’s manual pages read so far, covering 443 models. Each value links to the manual page it came from.
- Ford F-150100 or 150 lb-ft, by year and version2002–2027
- Chevrolet Silverado 1500140 lb-ft (190 N·m)2007–2027
- Ram 1500129 or 130 lb-ft, by year and version2010–2018, 2020–2027
- Jeep Wrangler95, 100 or 130 lb-ft, by year and version2010–2027
- Honda CR-V80 or 94 lb-ft, by year and version2000–2027
- Tesla Model Y129 lb-ft (175 N·m)Current owner's manual
- Nissan Rogue80 or 83 lb-ft, by year and version2013–2027
- Honda Civic80 or 94 lb-ft, by version2000–2027
Charts and tools
Bolt torque charts
Every size and grade at once, dry and oiled, in foot-pounds or newton-meters.
Where the numbers come from
Worked out from the standards, read from the manuals
No numbers copied from other charts. Bolt torque is calculated the way the published tables are, and every lug nut value is quoted from the automaker’s own manual. Sources and method
Start from the standard
Proof loads come from SAE J429 for inch bolts and ISO 898-1 for metric bolts.
Clamp to 75% of proof load
Then T = K × D × F: the nut factor (0.20 dry, 0.15 oiled) times the diameter times the clamp load.
Lug nuts from the manual
Each vehicle’s value is read in its owner’s manual and linked to the page it’s printed on.
Read up
Guides
How torque works, in plain words.
- How to torque lug nutsThe star pattern, passes and re-checking.
- Lug nuts vs wheel boltsNuts on studs or bolts into the hub, car by car.
- How to use a click torque wrenchSet it, pull to the click, store it low, have it checked.
- Torque units: ft-lb, N·m, in-lb and kgf·mWhat each unit is, and how to convert between them.
- Dry vs lubricated torqueWhy oil changes the number, and by how much.
- Bolt grade markingsRead the head: lines for SAE, numbers for metric.
Questions
Why do bolt torque charts tighten to 75% of proof load?
Proof load is the most a bolt can carry without stretching for good. Tightening to 75% of it clamps the joint hard while leaving a margin for the scatter in friction, which is how Fastenal’s and Portland Bolt’s published charts are worked out. Joints that are never taken apart are sometimes tightened further, but only to a spec written for them.
Should I use the dry or the oiled value?
The one that matches the threads as they’ll actually be tightened. Oil lowers friction, so the same torque stretches the bolt about a third further; using a dry value on oiled threads can overload the bolt. If a maker’s spec doesn’t say, follow its manual. Some vehicle manuals, Kia’s and Mazda’s among them, say to keep oil and grease off wheel nuts and bolts altogether.
Can I use a bolt chart for my lug nuts?
No. Wheel fastener torque is set by the vehicle maker for that wheel, hub and stud, and it’s printed in the owner’s manual. Use the value from the manual, or from this site’s lug nut pages, which quote it with a link.
How accurate is torque as a way to set clamp load?
Only roughly. Friction varies from bolt to bolt, and Fastenal notes that even a perfectly applied torque can give a preload 25–30% off. That’s why a calibrated wrench, clean threads and the right lubrication matter as much as the number.
Wheel off? Get the number from the manual.
Look up your vehicle, then tighten the nuts in a star pattern, in two or three passes.
Sources
- Portland Bolt: SAE J429: proof load, yield and tensile strength for Grades 2, 5 and 8 (checked October 14, 2026)
- Fastenal: Mechanical properties per ISO 898-1 (externally threaded fasteners): proof stress by property class (checked October 14, 2026)
- Fastenal: Torque–tension relationship for A307 A, Grade 5, 8 and 9 coarse thread bolts (75% of proof load; K 0.15 and 0.20) (checked October 14, 2026)
- Fastenal: Torque–tension relationship for metric fasteners, property classes 4.6, 8.8, 10.9 and 12.9 (checked October 14, 2026)
- Portland Bolt: Bolt torque chart: T = KDP at 75% of proof load, with K for plain, waxed and galvanized bolts (checked October 14, 2026)
- NIST: Guide to the SI (SP 811), Appendix B.8: conversion factors for units listed alphabetically (checked October 23, 2026)
Spotted a number that doesn’t match your manual or a source? Tell us; corrections are logged on the sources page.