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Showing posts with label custom nickel plated screws. Show all posts
Showing posts with label custom nickel plated 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.