Home > Military & Defense
We supply our defense and military manufacturers the full range of custom fasteners, including custom screws/bolts, standoffs/spacers, springs, washers, nuts, pins, machined components, and much more. We are proud to serve a small but critical part with many specialized defense manufacturers across the nation including Kihomac, Connectec, Ametek, and Navcom to name a few.

CALL US WITH YOUR INQUIRIES AT (866) 243-3044 OR EMAIL US AT SALES@ENGINEEREDSOURCE.COM

  • Custom 1/72 Hex Machine Screw Nut Made to Print

    This is a custom to print machine screw nut we supply to a defense customer on an as-released purchase order basis, with the releases at approximately 6,000 pieces. Made in the USA, this 1/72 machine screw nut is DFAR compliant and was made using 303 stainless steel with 3B thread fit.

  • Custom 17-4PH Dowel Pins - 5MM X 22.8MM In DFARS 17-4PH Material

    These custom 17-4PH dowel pins were manufactured domestically at 6,000 pieces.  DFARS 17-4PH stainless steel material was used, per AMS5622 with H900 heat treatment required.  Overall length was 22.8MM +0/-.4 and the critical diameter of the pins measured 5MM +0/-.013.  Our internal part number for this custom dowel pin is 12901978 and typical lead time is 12-14 weeks from order confirmation.

  • Custom 17-7PH Compression Springs - 0.125 X 1.016 Compression Springs For Aerospace Applications

    These custom 17-7PH compression springs were manufactured domestically and is intended for defense manufacturing applications. 17-7 PH Stainless steel material per AMS 5678 was used and the parts were passivated per MIL-S-5002. Heat treat was specificed per MIL-H-6875 and we also had to run the springs 100% through penetrant inspection in accordinace with MIL-STD-6866 Type I, Method A, Sensitivity Level 2. Outside diameter measured .800 inches, inside diameter at .53 inches, and 3-1/2 total coils. First Article Inspection Report (FAIR) was provided with the first batch of these compression springs per customer requirements.

  • Custom Captive Shoulder Screws - 18-8 Stainless Steel Material

    These custom captive shoulder screws were manufactured using a modification to a COTS part for our defense customer using 18-8 stainless steel material with standard 2-56 3A thread and standard socket head dimensions.  Length underneath the head was designed to .750" +/- .005" and the shoulder was turned to a diameter of .052-.054", at a length of .066" +/- .005".  

  • Custom Captive Shoulder Screws - Flat Socket Head In 302HQ DFARS Material

    Slightly over 4,000 pieces of these custom captive shoulder screws were made domestically for our military customer. An MS24671-32 part made using 302HQ DFARS compliant material was used as a base part to create this final version. Part of the 1/4-20 3A thread was turned down to a shoulder diameter of .175" +/-.005 and length of .339" +/- .015. .375" of thread remained after the modification. The resulting captive shoulder screws were then passivated per AMS QQ-P-35 and run through a thread lock patch process per MIL-F-18240.

  • Custom Class 12.9 Metric Socket Head Screws With Cad Plated Finish - M5 - 0.8MM Thread

    These custom class 12.9 metric socket head screws with cad plated finish were manufactured domestically using DFARS compliant 4140 alloy steel material per ASTM A108. 1,100 pieces were produced measuring 5M X 0.8MM X 16.15MM +/0.03MM. 6G class thread was rolled and the head incorporated a cold formed socket drive, fine knurl feature, and a .050" diameter through hole. Parts were run through a cadmium plating process at .0003/.0005" type II, Class 2 per AMS QQ-P-416, followed by non destructive magnetic particle inspection testing per ASTM-E-1444. Full certs and FAIR was provided with the parts.

  • Custom Drilled Stainless Steel Socket Set Screw

    This is a custom made socket set screw made using 303 stainless steel, passivated to Mil QQ-P-35 Type II. It measures 10-32 X .415" +/-.010 and is drilled at a diameter of .126 +.005/-.000 to a depth of .250 +/-.005. We supply them at orders of approximately 1,000 pieces per release and the custom parts are made domestically in the USA.

  • Custom Eccentric Shafts In 431 Stainless Steel Material

    We supply our customer these custom eccentric shafts on a revolving blanket purchase order basis, typically at 350 pieces required annually.  431 material per AMS 5628 material was used to manufacture these tricky parts, with heat treat, dicronite finish per AMS 2530 not to exceed .0002" in thickness.  Dimensional tolerances were very stringent on these parts, at +/- .0002" on many of the cross section diameters along the shaft.  The hex socket drive was broached with engagement to be at .175" minimum and overall drill depth not to exceed .200".  

  • Custom Large Socket Cap Screws - 1-1/4 -7 X 9" In A574 Material With Black Oxide Finish

    A574 material was used for these custom socket cap screws, with minimum tensile strength of 170,000 psi, minimum yield strength of 154,000 psi, and rockwell hardness between 37 and 45.  1-1/4 -7 class 3A thread was required and the overall length underneath the head was 9 inches.  MIL-DTL-13924 black oxide finish was done to complete the parts.  Per their request the shank and threads of each socket screw had to be protected during handling and shipping.

  • Custom Large Square Washers - 3" X 3" In A36 Material

    200 pieces of these custom large washers were manufactured domestically measuring 3" by 3" by .5" thickness, using A36 steel material with zinc plating per ASTM B633, SC2, Type 1. The inside opening had to be machined to a diameter of 1.06" +/- .01". All sharp edges had to be broken to .010-.030". Certifications for the material characteristics and the zinc plating was provided with the parts.


  • Custom Long Compression Springs In 17-4PH Material - 30.331 Overall Length

    The production of these custom long compression springs in 17-4PH material was run at a relatively small batch of only 500 pieces. 17-4PH material was used per AMS 5678 and all production work was done domestically with all secondary processes done with NADCAP certified facilities. A first article inspection report (FAIR) was provided as well with the parts together with all other certs. .060 +/-.0015" diameter wire was used to make this part and the ID/OD was set to .78"/.90". Parts were passivated per AMS 2700, method 1, type 2 or 8 with full certs to complete the production process spanning approximately 7-8 weeks from start.

  • Custom Metric Socket Cap Screws - M2-0.4M X 6MM Socket Head Cap Screws In DFARS Compliant 303 Stainless Steel

    These are M2 X 6MM DFARS compliant socket cap screws whose simplicity in look is misleading to say the least.  We were tasked to replicate our customers existing samples and the combination of the hex broach dimensions and depth together with the countersunk angle required a different approach than a standard flat socket head screw.  The part was initially made like a standard socket cap screw without the countersink, broached to required depth, and then machined down for the countersunk angle.  Finally the part was then threaded and passivated.

  • Custom MS16218-9 Slotted Flat Machine Screws

    This is a small quantity (1,000 pieces) batch of custom made dimensional equivalent of MS16218-9 slotted flat machine screws, made in the USA using C65500 ASTM B 98 silicon bronze material - it measures 2-56 X 3/16".

  • Custom Stainless Steel Button Socket Head Screws To Print

    This is a custom made 8-32 X 1" button socket head screw made in the USA using 302HQ material per customer specifications. We typically supply this part in quantities of 5,000 - 10,000 pieces and lead times vary between 5 and 7 weeks from order.


  • Custom Vented Titanium Screws - 2-56 X 7/8 Socket Cap Screws In Grade 5 Titanium Material

    These custom vented titanium socket cap screws were made domestically in the USA using ASTM B348 Grade 5 material and measured 2-56 X 7/8".  The vent hole has a diameter of .028 inches.  Lead time for similar parts is typically 8-10 weeks but expedited options are typically available upon request.  Our internal part number for this vented screw is SC-002014-UVENT.

CALL US WITH YOUR INQUIRIES AT (866) 243-3044 OR EMAIL US AT SALES@ENGINEEREDSOURCE.COM