3/8-16 x 5/16 Cup Point Slotted Headless Set Screw provides a cup point and straight slot drive for service work where a flat-blade screwdriver is the practical tool. The straight slot is useful in service kits, older equipment, and awkward access points where a screwdriver reaches more naturally than a key. Standard cup proportions run roughly 0.55 to 0.62 of nominal thread diameter, which is why the exact thread size matters.

It is a practical match for fixture stops, knobs, handles, lever hardware, and small machine adjustments, with the cup point providing localized contact on the retained component. Square Head Set Screws remain a wrench-driven alternative in this catalog section.

Cold Headers supports exact-size sourcing when a drawing or parts list calls for slotted headless set screw hardware. Check the diameter, length, drive access, mating material, and whether cup-point marking is acceptable before ordering.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 3/8-16
  • Length: 5/16 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.

Unit of Measure

Specifications

Brands

N/A Cold Headers, Inc.

Diameter

N/A 3/8-16

Length

N/A 5/16 in

Material

N/A Carbon Steel

Quantity

N/A 100

Package Type

N/A Box

Search

N/A CPSHLSS.3/8-16.5/16

Note

Note

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