Home > Steel Fabrication & Assembly
We supply our steel fabrication and assembly customers the full range of custom fasteners, including custom screws/bolts, standoffs/spacers, springs, washers, nuts, pins, bent parts, machined components, and much more. We are proud to serve a small but critical part with many specialized steel fabrication manufacturers across the nation including Ellison, Sonnet, KB Sheet Metal, and Carolina Metal Fabrication to name a few.

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

  • Custom 1/2-13 X 8-1/2 Low Head Stainless Steel Socket Head Cap Screws

    This is a custom low profile socket head cap screw manufactured domestically in the USA using 303 stainless steel material. It is a coarse thread 1/2-13 part at 8-1/2 inches in length. The threaded portion of the screw is at approximately 3 inches in length. Material certs are available upon request. Our internal part number is SCS-050136-I.


  • Custom Black Oxide U Bolts - 7/16-14 X 1-7/16 Round In Steel Material

    These are custom black oxide U bolts domestically manufactured for our machine and tooling component manufacturing customer at just 318 pieces.  7/16-14 thread was incorporated on each leg at 5/8" in length and the inside width was maintained at 5/8".  The inside length was 1-7/16.  Our internal part number for these u bolts is UB044023-F.

  • Custom Black Painted Screws - Stainless Steel #6 X 1/2" Type A Sheet Metal Screws

    We supply these custom black painted screws to our architectural design and fabrication customer in Los Angeles. They are 18-8 stainless steel type A sheet metal screws measuring #6-18 X 1/2" that are then stripped of any wax to prepare for the painting process. The black paint is formulated to match our customer's samples and a satin sheen is incorporated to match that of the paneling they will be used on. We typically run batches of 30,000 pcs of this specific color and screw, with lead time ranging from 3-5 weeks from initial order confirmation.

  • Custom Low Profile Torx Machine Screws - 18-8 Stainless Steel

    These custom low profile torx machine screws were manufactured domestically using 18-8 stainless steel material, at production volume of approximately 5,500 pieces.  T10 size 6 lobe drive was incorporated and the head diameter at .262" +/-.01" and head height at .263" +/-.01.  6-32 thread was selected for the .185" of thread, followed by a lead point measuring .090" +.000/-.002 in diameter and .050" +.020/-.000 in length.  Parts were passivated per MIL QQ-P-35 Type II to complete the production process.

  • Custom Metric 316L Set Screws - M5-0.8 X 6MM Short Dog Point Socket Set Screws

    We ran an order of these custom metric 316L set screws with a short dog point at just 3,000 pieces using domestic production. Lead time was relatively short at just 3-4 weeks from confirmed purchase order receipt. A short .059 dog point was incorporated and a 2.5MM hex socket drive was broached for speed and cost efficiency. Overall length was set at 2.36 inches and the tolerance on all dimensions was set at +/- .005 inches.


  • Custom Modified Grade 8 Machine Screws - Special Head Shape

    These custom modified grade 8 machine screws were made using 5/16-18 X 1-1/4 Grade 8 hex head cap screws in grade 8 steel material with zinc/clear finish. The head of each COTS part was machined to the shape seen here, with the head height at .190" +/-.005" and head diameter at .485" +/-.005". Single flat .42" section was incorporated at one section per our customer's provided sample piece. Total of 3,000 pieces were modified on this specific production run and the lead time was approximately 2 weeks from the order receipt.

  • Custom Slotted Reverse Drive Machine Screws - 1/4-20 X 1" In Zinc Plated Steel Material

    These are custom slotted reverse drive machine screws made domestically in the USA using low carbon steel material with commercial zinc and clear finish.  Approximately 12,000 pcs were produced with a lead time of 8-10 weeks.  The heads were cold headed and the slotting was done as the last stage in the process prior to zinc plating.  Material certs and certificate of conformance was made available to the customer as needed.

  • Custom Stainless Standoffs - Male/Female In 304 Stainless Steel Material

    These are custom stainless staindoffs made using 304 stainless steel material in accordance with ASTM A276 and passivated to ASTM A380.  Approximately 100,000 pieces were produced domestically with full certifications.  4-40 thread was incorporated on both male and female parts, with the male part measuring .750 inches and female hex measuring .320 inches in length.  Width across the flats on the hex measures .250 inches.

  • Custom Stainless Steel Double End Studs - 1/4-20 & 10-32 Thread in 304 Stainless Steel

    We provide our customer a small batch of these custom stainless steel double end studs at just over 100 pieces.  They wanted to replicate existing parts but did not have any drawings or prints.  We used a sample piece provided to replicate all dimensions to a +/-.01" tolerance.  1/4-20 thread is incorporated on the larger diameter side and 10-32 on the other, with approximately half the thread turned down into a dog point.

  • Custom Stainless Tamper Proof Sheet Metal Screws - 6-18 X 1/2 Oval One Way Type A Sheet Metal Screws In 18-8 Stainless Steel

    These are custom stainless tamper proof sheet metal screws measuring 6-18 X 1/2 inch in length.  A tamper resistant one way oval head is incorporated with type A sheet metal screw thread.  We have these parts manufactured domestically at 30,000 to 50,000 pieces and release them to our customer as needed throughout the year.  18-8 stainless steel material is used on these specific one way oval screws but we also supply an identical part in 316 stainless steel material.

  • Custom Stamped L Brackets - 3/4 X 3/4 X 3/4 In Steel Zinc At .125" Material Thickness

    These custom stamped L brackets are made using low carbon steel material with zinc plated finish.  .125" thick material is used and the outside dimensions are 3/4" for each leg, as well as the width of the bracket length itself.  Production takes place in the USA and we typically run approximately 10,000 pcs at a time for this stamped part.  Our customer uses it in combination with two other custom stamped brackets used to assemble decorative paneling.

  • Custom V Bolts In Steel Zinc Material - 8-32 Thread

    These are 8-32 custom V bolts we had domestically produced for our customer.  Initially 12 pieces were run for prototype testing purposes prior to full production order.  The inside length to the bottom of the V is 1" and .625" between the legs.  0.6" of 8-32 thread is incorporated on both legs.  One thing to note with this type of bent part is that the threaded areas are clamped during the bending process - at minimum this results in a small visual dent in the threads and at worst, if over clamped the thread can be damaged to the point of creating issues running the mating parts.  We carefully inspect the parts to make sure this latter issue is avoided.  Unfortunately, there is no way to completely avoid grabbing on to the threaded areas for mass production that we have seem, without of-course limiting the amount of thread on each leg.

  • Painted Self Drilling Screws

    Custom brown painted self drilling screws in 18-8 stainless steel material supplied to our long time customer at 10,000 pcs per release.  We typically stock these parts based on revolving 12 month blanket purchase order arrangements - pricing is locked in based on 100K pieces but parts are released on a monthly schedule based on our customer's seasonal need.  The sealant on the brown painted heads was set to flat sheen as our customer prefers to avoid glossier finishes.  Lead time for painted parts at these quantities is typically 3-4 weeks from the procurement of the plain version.

  • Special 8-18 Partially Threaded Machine Screw With Tapered Point

    This is a special partially threaded machine screw supplied to our customer at 30,000 pieces. The part is made using 18-8 stainless steel and is slightly tapered at the point to allow for faster use in the customer's application. The head is a slightly off-standard pan head with a phillips drive. Parts are made in the United States.


  • Special DIN965 Metric Phil Flat Machine Screw

    This is a special phillips flat DIN965 machine screw measuring M3 X 0.5 X 9MM and manufactured in the USA using steel with zinc plating finish.  These parts we typically supply to our customer with a production run for each order at the quantity requested, typically around 3,000 pieces.  While a variety of M3 X 0.5 DIN965 screws are available as standards, the 9MM length is often an impossible item to find off the shelf and requires production as a special.

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