4-40 x 3/8 Alloy Steel Flat Head Socket Cap Screw with Nylon Insert

4-40 x 3/8 Alloy Steel Flat Head Socket Cap Screw with Nylon Insert is specified where a recessed flat head, internal hex drive, and alloy steel nylon insert fastener are required. It is a practical option when purchasing teams want a socket-drive fastener with an integrated nylon insert feature. The nylon insert provides prevailing-torque resistance that can help reduce loosening in machinery subject to vibration or repeated movement. The 4-40 x 3/8 size supports exact catalog selection for robotics, packaging machinery, inspection fixtures, and serviceable machine components. For engineers, OEM manufacturers, purchasing managers, and maintenance professionals, this alloy steel part helps match the fastener to the assembly without changing the locked dimensions. Automation systems, tooling plates, machine frames, and engineered fastening locations are common sourcing contexts for this product family. Call Cold Headers at 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

Unit of Measure

Specifications | Note

Specifications

Brands	N/A Cold Headers, Inc.
Diameter	N/A 4-40
Length	N/A 3/8 in
Material	N/A Alloy Steel
Quantity	N/A 100
Package Type	N/A Box
Search	N/A ASFHSCSNI.4-40.3/8

Note

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

Specifications

Brands

Diameter

Length

Material

Quantity

Package Type

Search

Note

Note