Heavy Duty M3 Grub Screws 200 Piece Assortment Rock Solid Cup Point Socket Set Screws 12.9 Grade Black Carbon Steel Fasteners Built Tough For Dirty Jobs And Weekend Builds

Heavy Duty M3 Grub Screws 200 Pack Black Assorted Set
✔️ 12.9 grade black cup point fasteners holding 200 screw pieces

You get a solid rack of heavy metal fasteners ready for real work. These hex socket drive grub screws hold shafts tight against rotation or sliding force. You will find them perfect for assembling custom gears, locking pulleys, or securing couplers on weekend jobs.

✅ 12.9 grade black carbon steel core delivers serious holding power
✅ Oxidized surface coating stands up to dirt and moisture on job sites
✅ Cup point design grips smooth surfaces without slipping or spinning
✅ 200 piece pack covers eight common thread lengths for quick swaps

💡 What makes cup point set screws handy for precision motor alignment?

They lock rotating components dead center without extra fuss. - Tapered gripping threads bite into polished bushings for zero wobble
- Hex socket bottoms allow deep driver runs for controlled torque
- Heat treated alloy frames survive repeated vibration near transmission gearboxes
- Metric length arrays keep oddball parts tidy in your tool chest until next weekend run

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