3/8-16 x 1 1/2 Cup Point Slotted Headless Set Screw fits applications where a screwdriver-driven cup point set screw is preferred over socket-key installation. The slot can be driven with common flat-blade tools, avoiding the need to identify and carry a separate key size. The hollow-rim point can bite into the mating surface, so selection should consider whether a witness mark is acceptable.

The format suits knurled knobs, hand wheels, shaft collars, and access points where a screwdriver is easier than a key when a slotted headless set screw is already shown on the drawing or parts list.

Cold Headers is a Chicago specialty fastener distributor focused on practical replacement and sourcing support. Confirm the exact thread size and length, especially on legacy equipment where near-size substitutions can cause service problems.

Technical Highlights

• Drive: Straight Slot (flat-blade screwdriver)
• Point: Cup
• Thread Size: 3/8-16
• Length: 1 1/2 in.
• Material: Carbon Steel
• Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
• Head: None (headless, installs below surface)
• Dimensional Standard: ASME B18.6.2

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.