Custom Stainless Steel Socket Shoulder Bolts

 

These custom stainless steel socket shoulder bolts were manufactured using 18-8 stainless steel material with factory passivation finish.  The head was fully cold formed, which took multiple tooling iterations to get just right.  1/4-20 2A thread was rolled at a length of .575" underneath the .305-.311" diameter shoulder.  A .190" across the flats hex socket drive was incorporated at a depth of .120" min.  Certs were made available to our customer's specifications.

Custom 6-Lobe (Torx Alternative) Shoulder Screws in 416 Stainless Steel

 

We had these custom 6-lobe shoulder screws manufactured in 416 stainless steel in the USA for our electronics customer.  DFARS compliant material was used and the parts were heat treated to achieve 26-32 RC.  The 6-lobe drive (T10 size) was made using a combination of broaching and punch, allowing us to bypass cold forming that carries a much longer lead time in our current conditions.  The shoulder measures .13" X .500" in length and the threaded portion is #4-40 with a minimal undercut.  Full certs were included with the parts per our customers requirements.

Custom Length Shoulder Bolts In Stainless Steel - 1/4 X 1"

We supplied these custom length shoulder bolts to our audio device manufacturer.  The shoulder bolt is essentially an off-the-shelf 1/4 X 1 shoulder bolt with 10-24 rolled thread in 18-8 stainless steel material.  Our customer was unable to use this version as-is due to the combined length of threaded portion and the machined fillet preceding it.  In order to make use these parts that combined length had to be at .24"  +/- .01".  As a relatively simple operation we ran these parts through a cut and chamfer operation to get them to the correct length.  Lead time for this operation was 1-2 weeks from receipt of the off-the-shelf version.

Custom Grade 5 Shoulder Bolts - Steel & Commercial Zinc Finish

We supply these custom grade 5 shoulder bolts to our long time customer with recurring annual blanket purchase orders, typically with annual usage ranging between 20,000 and 25,000 pieces.  They are domestically manufactured to a grade 5 standard with commercial zinc, bake and clear chromate finish.  The shoulder measures .40" in diameter by .50" in length, with 5/16-18 thread rolled the balance of the screw.  The overall length is 1-1/4" underneath the head.

Custom Hex Shoulder Screws - 4340 Alloy Steel

We supply these custom hex shoulder screws to our Canadian customer, with the shoulder measuring .425 +/-.002 by 1.650 +.005/-.000 in length.  5/16-18 thread was incorporated measuring .50" in length including the unthreaded portion before the rolled thread begins.  .055 radius hole was then drilled at .102" from the end of the threaded portion.

Custom Knurled Shoulder Bolts - 41L40 Material With Zinc & Clear Finish

These custom knurled shoulder bolts are the result of the tests we ran with different knurling methods mentioned in one of the previous posts.  Parts came out perfectly but we did run into some challenges with the lead times, being behind initial expectations due to tooling delays early in the process.  We had to throw money at expediting every part of the process where possible to try to limit our delays as much as possible - some sleepless nights worrying about these bad boys and our customer's dire need.  Every good factory and secondary processor across the nation is absolutely swamped so make sure to buffer lead time expectations as much as possible.

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.

Custom Stainless Steel Shoulder Bolts - 1/8 X 1-1/2 Shoulder

These are custom stainless steel shoulder bolts made domestically in the USA using 18-8 stainless steel material.  We typically run production at approximately 10,000 pcs per order for our customer and the lead time ranges between 5 and 6 weeks from confirmed order.  The shoulder measures 1/8 X 1-1/2, with 4-40 thread.