Custom Long Socket Head Machine Screws - 8-32 & 8-36 Thread In 4140 Alloy Steel

 

These custom long socket head machine screws were manufactured domestically using 4140 alloy steel material with heat treatment to reach 37-44 Rc hardness.  Two sizes were produced together in this run: 8-32 X 5.43" length with thread length of 5/8" and 8-36 (an odd thread pitch requested for this one) X 6-3/8" with the same 5/8" thread length requirement.  The thread was cut rather than rolled for these parts and the hex drive was broached.  

Custom 32tpi Socket Head Cap Screws - 4140 Material With 37-44 Hardness And 1/4-32 Thread Pitch

These are custom 32tpi socket head cap screws we supplied to our automotive prototyping customer.  4140 plain alloy material was used to produce a small batch of just 25 pieces domestically in the USA.  The 1/4-32 thread pitch was really the only tricky part requiring a custom production run.  Speed was absolutely critical to our customer and we were able to get the parts made and shipped within 2 weeks from order confirmation.

Custom 4140 Steel Shoulder Bolts - M11.5 X 136MM With Special Hex Head, 37-44 RC, Special Dog Point

These are custom 4140 steel shoulder bolts we supplied to our automotive customer at 100 pieces.  4140 steel material was used with heat treat to achieve 37-44 RC, with plain finish.  The shoulder measured M11.5 x 136MM with a 1.15MM groove approximately 35MM from the special hex head.  The special dog point measures 10.447MM/10.540MM by 5.7MM in length.  Lead time for this 100 piece domestic batch was approximately 6 weeks from order confirmation.