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Showing posts with label custom 1/2-20 screws. Show all posts
Showing posts with label custom 1/2-20 screws. Show all posts

Thursday, December 26, 2019

Custom Nickel Plated Socket Head Screws - 4340 Material

Custom Nickel Plated Socket Head Screws - 4340 Material
These custom nickel plated socket head screws were produced domestically using 4340 material instead of the originally requested 17-4PH version, with heat treatment to get the parts up to required 35-45 HRC hardness.  1/2-20 thread with 2A thread fit was incorporated with thread length of .77 inches.  Overall length underneath the head was set at 1.37" +.00/-.03".  The large .945" diameter head presented a challenge from the start for the cold heading operation - it took multiple sets of tooling and adjustments to finally get the head shape just right.