5/16-18 x 5/8 Cup Point Slotted Headless Set Screw supports headless set screw applications where the slot, not a hex recess, is the intended drive feature. The headless form keeps the fastener contained in the tapped component while the screwdriver slot remains the drive interface. The cup point uses a hollow rim for localized contact on the mating shaft or component surface.

The format suits service parts, restoration hardware, light mechanical stops, and replacement set screw inventories when a slotted headless set screw is already shown on the drawing or parts list. Compare Cup Point Alloy Steel Socket Set Screws when socket-drive tightening is preferred.

Cold Headers has supplied specialty fasteners since 1962 and supports hard-to-find slotted set screw sourcing. Selection should reflect the shaft surface, required holding action, access for a flat blade, and the original hardware callout.

Technical Highlights

• Drive: Straight Slot (flat-blade screwdriver)
• Point: Cup
• Thread Size: 5/16-18
• Length: 5/8 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.