Cup Point Socket Set Screws 4-40 X 3/32 Inch Alloy Steel Black Oxide Finish Hex Socket Grub Screws Coarse Thread Headless Allen Style 100 Piece Pack For Precise Secure Fastening In Machinery And Fixtures
✔️ Coarse 4-40 thread, 3/32in length, cup point, alloy steel
This cup point set screw is a headless, fully threaded fastener designed to lock parts on shafts with a precise bite. Its cup-point and internal hex drive make it a common choice in machinery and fixtures where parts must stay in place along rotating shafts. The black oxide finish gives decent wear resistance, but note it isn’t a moisture-proof coating.
✅ Thread: 4-40 coarse thread, 3/32 in length✅ Material: Alloy steel with black oxide finish
✅ Drive: Internal hex socket size 0.050 in (1.27 mm)
✅ Type: Cup point, headless, fully threaded
✅ Pack: 100 pieces in this set
💡 What is a cup point set screw used for in machinery? These handy fasteners lock components on shafts with a cup-point bite for a secure grip in fixtures and machinery.
- handy for securing pulleys, collars, and gears on shafts without protruding heads
- effective when shaft hardness varies to prevent slip
- sized for precise 4-40, 3/32in length applications in an alloy steel black oxide option