Custom Vented Screws - Engineered Custom Bolts & Screws https://www.engineeredboltandscrew.com/portfolio-category/custom-vented-screws-bolts/ Custom bolts and screws - cold headed, hot headed, and machined. Socket head, hex head, shoulder screws, and much more.. Mon, 18 May 2026 03:38:54 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.1 194122415 Custom Vented A354 BD Socket Head Screws With Drilled Hole https://www.engineeredboltandscrew.com/portfolio/custom-vented-a354-bd-socket-head-screws-with-drilled-hole/ Mon, 18 May 2026 03:38:54 +0000 https://www.engineeredboltandscrew.com/?post_type=liquid-portfolio&p=5476 The post Custom Vented A354 BD Socket Head Screws With Drilled Hole appeared first on Engineered Custom Bolts & Screws.

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These custom vented socket head screws were manufactured for our aerospace customer using A354 Grade BD material with MIL-DTL-13924 black oxide finish. 5/16-24 UNF was rolled to a length of .625 inches and the head was cold formed with drawing specified markings. A hole was drilled through to vent the parts at a diameter of .152 +.004/-.001″ and a .063″ hole was drilled across the thread. The drilled holes created burrs, especially at the drilled hole area on at the threaded end, which made these parts very tricky and time consuming to get perfectly right.

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]]> 5476 Custom Large Metric 12.9 Socket Head Bolts – M90 X 495MM https://www.engineeredboltandscrew.com/portfolio/custom-large-metric-12-9-socket-head-bolts-manufacturers/ Thu, 11 Nov 2021 20:37:06 +0000 https://www.engineeredboltandscrew.com/?post_type=liquid-portfolio&p=5273 The post Custom Large Metric 12.9 Socket Head Bolts – M90 X 495MM appeared first on Engineered Custom Bolts & Screws.

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These are custom large metric class 12.9 socket head bolts manufactured domestically for our utilities customer at 92 pieces. M90 X 4 thread was incorporated at thread length of 120MM. The shoulder dimeter was set to 84.3MM at a length of 290MM.

The 75MM socket drive was broached with a 10MM diameter hole drilled in the center to a depth of 385″ from the top of the head.

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]]> 5273 Custom Vented Screws In Invar 36 Material https://www.engineeredboltandscrew.com/portfolio/custom-vented-screws-in-invar-36-material/ Fri, 05 Apr 2019 17:04:14 +0000 https://www.engineeredboltandscrew.com/?post_type=liquid-portfolio&p=4926 The post Custom Vented Screws In Invar 36 Material appeared first on Engineered Custom Bolts & Screws.

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Both of these custom vented screws are recurring parts for a research lab we work with.  Measuring 8-32 X 5/8 and 6-32 X 1/4 both are made using Invar 36 material with a vent drilled hole running the full length of the screw.  Invar 36 material has a very low level of thermal expansion and is typically used for applications where dimensional changes due to temperature variation must be minimized as much as possible.  The hex socket drive was broached for both parts, in lieu of a cold headed alternative.

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]]> 4926 Custom Vented Titanium Screws – 2-56 X 7/8 https://www.engineeredboltandscrew.com/portfolio/custom-vented-titanium-screws-2-56-x-7-8/ Fri, 05 Apr 2019 17:00:56 +0000 https://www.engineeredboltandscrew.com/?post_type=liquid-portfolio&p=4923 The post Custom Vented Titanium Screws – 2-56 X 7/8 appeared first on Engineered Custom Bolts & Screws.

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We supplied these custom vented titanium screws to our aerospace customer.  Parts 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.  Material certs were provided with the parts, as well as our certificate of conformance.

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