4-40 x 3/8 Oval Point Alloy Steel Socket Set Screw with Nylon Insert gives designers a rounded-contact set screw for shafts, grooves, and seats that may not be perfectly square. This point style is useful when the part may be loosened and reset without the deep mark of a biting point. Specify the heat-treated alloy steel body with nylon pellet when the print calls for mechanical set screw hardware, not a stainless substitute.

Machine rebuilds use this family when the service record calls for alloy steel, an oval point, and a nylon insert.

In-house pellet installation supports uncommon oval point nylon-insert requirements when a standard plain screw is not enough. Cold Headers can quote the requested oval point nylon-insert item without steering the request toward a biting point style. Check thread size, length, socket size, pellet dimensions, groove or seat condition, and surface-marking tolerance before substitution.

Technical Highlights

  • Point: Oval (rounded radiused tip)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 3/8 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 3/32 in., +/-1/2 pitch
  • Dimensional Standard: ASME B18.3

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 3/8 in

Material

N/A Alloy Steel

Quantity

N/A 100

Package Type

N/A Box

Search

N/A OPASSHSSNI.4-40.3/8

Note

Note

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