3 4 Bolt Torque Spec

Leaf spring u bolts are available from grade 5 u bolts to grade 8 u bolts.

3 4 bolt torque spec.

Find the bolt torque chart for the astm a449 and sae grade 5 sae j429 grade 5 bolts. Grade 2 grade 5 grade 8 18 8 s s bronze brass. Grade 2 5 and 8 values are for plated bolts. Leaf spring u bolt kits for heavy trucks medium and light duty trucks and auto applications.

Tightening torque guide for grade 5 8 hex cap screws this table is based on ifi 5th edition technical data n 12 n 16 using equation 1 and a torque coefficient k 0 20 for non plated steel fasteners and k 0 15 for plated fasteners. Nom dia pitch nom size x pitch inch bolt torque table sae j429 and asme 574 metric bolt torque table iso 898. Re use of original used spring u bolts is not recommended due to fatigue and stretching when u bolt was originally torqued. Astm a449 is identical in chemical properties and is used in general engineering applications.

Coarse fine coarse fine coarse. Fine thread figures are for 1 14. Lubed means cleaned dry bolts lubricated with standard medium viscosity machine oil. Over 6 000 automotive torque specs.

Sizes from 1 4 up are in ft lbs. Grade 2 calculations only cover fasteners 1 4 3 4 in diameter up to 6 long. For longer fasteners the torque is reduced significantly. Lubricating the bolts is the suggested method.

Clamp loads are based on 75 of the minimum proof loads for each grade and size. Asme b18 2 6 covers dimensional standards for a325 heavy hex structural bolts rcsc. Torque wrench calibration browse our selection torque wrench faqs. Grade 2 5 and 8 values are for slightly lubricated bolts.

Shop for us hex bolts. If you are working with a325 structural bolts on a regular basis we strongly recommend purchasing a copy of the astm a325 specification from astm international. The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety. Always refer to the manufacturers recommended torque values if possible.

Print this page. 3 4 125 138 200 223 282 315 128 124 104 102 118 115 7 8 129 144 322 355 454 501 194 193 178 178 159 158 1 188 210 483 541 682 764 287 289 265 240 235 212 sizes from 4 to 10 are in in lbs. Gm 3 4l 207ci v6 engine torque specs. These charts show suggested maximum torque values for threaded products and are intended only as a guide.

Search car torque specifications by engine or model. Us recommended bolt torque. We supply round u bolts square u bolts and semi round u bolt kits complete. Lubricate all contact areas of the bolts and washers.

Fine thread figures are for 1 14.