4-40 x 1 1/4 Cone Point Alloy Steel Socket Set Screw is made for set-screw locations where the conical point is intended to enter the mating surface rather than rest on top of it.

The pointed end can also serve as a pivot or hanger point where the design intentionally uses focused contact instead of a broad bearing surface.

Use this material identity when the bill of material calls for alloy steel; environmental exposure and surface requirements should still be checked against the application.

Typical review areas for 4-40 x 1 1/4 include conveyor equipment, packaging machinery, and production hardware and shaft collars, stops, and hub-mounted components where focused tip engagement is part of the assembly.

The 4-40 thread is UNC with 40 TPI, and the 1 1/4 in. length should be compared with tapped depth and cone-point reach. Check the length against tapped depth and point reach so the cone enters the intended contact area. Cold Headers works with socket fastener requirements where item-level details affect fit and ordering accuracy.

Technical Highlights

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