4-40 x 1/8 Cone Point Alloy Steel Socket Set Screw is specified when the print calls for alloy steel material and a pointed set-screw contact area.

This point style is useful where a shaft, collar, stop, or fixture detail is expected to accept a clear indentation from the screw tip.

Alloy steel construction is appropriate where the product specification calls for this family and the cone point geometry matches the intended contact condition.

Typical review areas for 4-40 x 1/8 include repair assemblies, replacement bins, and maintenance drawings and repair assemblies, replacement bins, and maintenance drawings where focused tip engagement is part of the assembly.

The 4-40 thread is UNC with 40 TPI, and the 1/8 in. length should be compared with tapped depth and cone-point reach. Review the mating material, drilled contact location, and allowable surface mark before changing point style. Cold Headers supports maintenance, distributor, and production requests for difficult set screw configurations.

Technical Highlights

• Point Style: Cone Point
• Material: Alloy Steel
• Thread Size: 4-40
• Length: 1/8 in.
• Thread Series: UNC
• Threads Per Inch: 40
• Drive Type: Internal Hex