Reference chart of bolt grades, nut types, screw heads, drives a…

Common Automotive Fasteners: Bolts, Screws, Nuts

Standard notation for thread sizes is (inch) diameter-pitch x length (i.e., 1/4-20x1) or (metric) "M"diameter x pitch x length (i.e., M8x1.25x75).

Shouldered shanked studs:


Tamper Torx bolts with captive fender washers:


http://www.boltscience.com/pages/twonuts.htm
https://www.henrysautomotivewarehouse.com/2017_web.pdf
https://www.clipsandfasteners.com/

See also:

Owner caption November 2011 · Photo 3868 of 6546