EZ Read Hex Bolt Torque Chart - Inch

Pretty much self explanatory. These values are from the Fastenall PDF on bolts and fasteners. If you poke around the web you will see many different values for bolt torques. They are all pretty close and here is yet another with the exception that it's bigger and easier to read. These charts are for Hex Bolts, generally the socket heads are a higher torque number if a good quality socket head bolt.

Dry vs. Lubricated bolt torque? Yes a big difference since you not counting the friction of a dry bolt thread as final torque. For ARP and other performance bolts check their specs with their specific type of lube as it will make a difference. Plated bolts require less torque then unplated, again the inherent lubrication of the plating helps reduce the friction. The chart below is for standard chromate plated bolts which is typically what you get.

Get a good torque wrench! NOT some POS import for 5 bucks. You can get them in several styles, Clicker, Digital, Beam Pointer, Gauge, and slightly different style angle. You application will determine which type you might like to use. For example head bolts I like the clicker style. For Inch/Lbs torque range I like the gauge.

And don't forget that fine thread bolts usually have a bit more meat in the bolt due to smaller threads and as such will have a higher torque rating.

Any bolt that is suspect or has been over torqued should be tossed out, especially if it's a 'mission critical' bolt, such as brake caliper, steering, etc.

Lastly it's important to have clean thread on both ends, so if you are putting head bolts into a block, good idea to run a tap to make sure threads are clean.

Need a EZ to read Metric Torque Chart? Then click - EZ Read Metric Bolt Chart

Disclaimer - USE AT YOUR OWN RISK

Bolt Size	Hex Cap Plated - Recommended Torque in Ft/Lbs unless noted
	Grade 2				Grade 5				Grade 8
	Coarse		Fine		Coarse		Fine		Coarse		Fine
	Lube	Dry	Lube	Dry	Lube	Dry	Lube	Dry	Lube	Dry	Lube	Dry
1/4 (In/Lbs)	49	58	56	68	76	91	87	104	107	129	123	147
5/16	8	10	9	11	13	16	14	17	19	22	21	24
3/8	15	18	17	20	23	28	26	31	33	39	37	44
7/16	24	29	27	32	37	44	41	50	52	63	58	70
1/2	37	44	41	49	57	68	64	76	80	96	90	108
5/8	73	87	82	99	113	135	127	153	159	191	180	216
3/4	129	155	144	173	200	240	223	267	282	339	315	378