Custom Machine Screws - Engineered Custom Bolts & Screws

Custom Grade 5 Hex Bolt, Nut, and Washer Kits

alex@engineeredsource.com — Tue, 05 Nov 2024 17:52:30 +0000

These custom automotive fastener kits included grade 5 5/16-24 partial thread hex bolts, split lock washers, and grade 5 hex nuts. All parts were black oxide finished prior to poly bagging into individual kits per our customer’s specifications. All certs were available with the parts and standard description labels were used on all poly bags.

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Custom Domestic Automotive Class 9.8 Hex Flange Bolts

alex@engineeredsource.com — Wed, 25 Oct 2023 17:16:03 +0000

These custom class 9.8 hex flange bolts were manufactured for our automotive customer in the USA. M6-1.00 X 18MM thread was rolled and head dimensions were made to DIN 6921 specifications. Parts were heat treated to 28-37 HRC core hardness per ISO 898-1 Class 9.8. Level 3 PPAP and full certs were provided with the parts per customer requirements.

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Custom Inconel 718 Double Thread Offset Aerospace Bolts

alex@engineeredsource.com — Mon, 16 Oct 2023 18:57:31 +0000

Custom custom Inconel 718 double thread offset studs were manufactured for our aerospace customer. The offset head, double thread, and hardness of material made these parts extremely difficult to manufacture. The head radius measured .203″ and a combination of 5/16-24 2A and 1/4-28 2A thread was cut to a length of .842″. Definitely one of the toughest parts we have dealt with – the hardness of the material created countless issues with tool life. Full certs with FAIR were provided with the parts.

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Custom Tapered Shoulder Socket Head Bolts

alex@engineeredsource.com — Thu, 31 Aug 2023 19:51:25 +0000

These custom tapered shoulder socket head bolts were manufactured using 4140 alloy steel material with 28-32 HRC hardness and zinc clear finish. The shoulder diameter tapers form 0.78″ down to 0.75″ and the head diameter was set to 1.00 +/-.015″. Underneath the shoulder approximately .55″ of 3/8-24 2A thread was rolled with thread relief allowance of roughly .085″.

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Custom Drilled Hole Grade 10.9 Carriage Bolts

alex@engineeredsource.com — Thu, 31 Aug 2023 19:09:53 +0000

These custom carriage bolts were produced to our customer’s drawing to class 10.9 characteristics with black oxide finish. Approximately 27MM of M10-1.5MM 6G thread was rolled underneath the square shoulder and a 3MM hole was drilled through one side of the shoulder. The square shoulder was produced to 10MM across the flats. Under the head a R45 radius was maintained to match the mating washer.

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Custom Grade 8 Torx Flat Head Dog Point Screws

alex@engineeredsource.com — Thu, 22 Jun 2023 17:22:30 +0000

These custom grade 8 flat head screws were manufactured for our automotive aftermarket component manufacturing customer – the dog point was incorporated to allow for better ease of use and the finish was plain thermal black oxide. 5/16-18 thread was rolled with an overall length (including the head height) of .875″. Certs were made available upon request but no PPAP was required for this application.

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Custom Grade 5 Left Hand Thread Hex Head Bolts

alex@engineeredsource.com — Wed, 21 Jun 2023 16:38:23 +0000

We manufactured these custom left hand thread hex head bolts for our customer to grade 5 requirements in plain thermal black oxide finish. They measured LH 3/4-10 x 2″ in length with the hex head measuring 1.100-1.125″ across the flats. Head height was set to .483-.455″. Full certs were made available with the parts.

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Custom Slotted Double Thread Studs

alex@engineeredsource.com — Sun, 26 Mar 2023 19:57:50 +0000

We supplied these custom slotted double thread studs to our furniture manufacturing customer. Low carbon steel was used for the production with a black oxide finish. 3/8-16 thread was rolled on each side and the overall length measured at 47.60MM. The part is similar to the hex socket drive version in alloy steel that we supply our automotive aftermarket OEM customers.

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MS21250-02004 12-Point Flange Bolts

alex@engineeredsource.com — Thu, 23 Feb 2023 19:32:27 +0000

These MS21250-02004 12 point flange bolts were manufactured using domestic 8740 AMS 8322P steel material heat treated to AMS 2759/1 F AMS 2759 F to reach hardness of 40-43 HRC. The parts were finished with CAD plating per AMS-QQ-P-416E specification, Type II Class 2. Full certs were provided with the parts to our aerospace customer per order requirements.

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Custom DFARS A286 Aerospace NAS Socket Head Bolts

alex@engineeredsource.com — Mon, 26 Sep 2022 17:46:54 +0000

These custom DFARS compliant NAS1352N4LE16S socket head bolts were manufactured domestically for our aerospace customer using A286 stainless steel material from France. They measured 1/4-20 X 1″ and were finished with AMS2411 Rev J silver flash plating and bake, as well as thread locking patch. Certification with mechanical testing performed per FF-S-86 specification were absolutely critical on these parts and were included together with material certs, passivation certs, and plating certs.

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