Cold Headers
Cold Headers
5514 N. Elston Ave
Chicago, IL 60630
Phone: 1-773-775-7900
Fax: 1-773-775-0779
Email: sales@coldheaders.com
Website: www.coldheaders.com
Working Hours: Mon - Fri 8:00am - 4:30pm CST
Saturday - Sunday CLOSED If you have any questions, please call or email us.
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4-40 x 3 1/2 Alloy Steel Socket Head Cap Screw provides a strength-focused alloy steel socket cap screw option for mechanical assemblies requiring this exact size. This size keeps the specified 4-40 thread and 3 1/2 in. length visible for repair work tied to an existing fastener callout. It is frequently used in robotics, power transmission, and industrial automation when socket engagement is preferred over external-wrench access. Internal hex drive access helps installation in compact assemblies, guards, housings, and fixture plates. Those verified dimensions support counterbore checks, tool selection, and replacement fastener review. Technical Highlights Material: Alloy Steel Thread: 4-40 Length: 3 1/2 in. Nominal Body Diameter: .112 in. Head Diameter: 0.176 in. min / 0.183 in. max Head Height: 0.108 in. min / 0.112 in. max Hex Key Size: 3/32 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Unit of Measure

Specifications

Brands

 N/A Cold Headers, Inc.

Diameter

 N/A 4-40

Length

 N/A 3 1/2 in

Material

 N/A Alloy Steel

Quantity

 N/A 100

Package Type

 N/A Box

Search

 N/A ASSHCS.4-40.3 1/2

Note

Note

 N/A Less Than Package Quantity Specified Plus 25%.