2 Pack M4 X 40mm Knurled Thumb Screws Zinc Plated Carbon Steel Clamping Knobs With Heavy Duty Grip Lock It Down Tight For Shop Rigs And Weekend Build Projects
2 Pack M4 Knurled Thumb Screws For Workshop Jigs
✔️ M4 thread length forty mm with sixteen mm knurl head
These zinc plated carbon steel clamping knobs arrive as a two piece set built for fast manual adjustments on workshop jigs and light machinery. You get steady torque without thread wear since the rolled profile spreads contact pressure evenly around mounting holes. Builders and technicians drop them straight onto drill press fences, router sleds, packing stations, and lathe tailstocks where hands free sliding keeps projects moving smoothly.
✅ Shaft extends forty mm which converts to one point five seven inches along the thread✅ Head spans sixteen mm giving you zero point six three inches of finger clearance
✅ Overall stack hits fifty mm sitting right at just under two inches of total height
✅ Durable zinc coating blocks shop grease and prevents surface oxidation over years
✅ Complete bundle ships two identical units so you never wait for spare replacements
💡 What makes knurled thumb screws handy for holding custom jigs square during heavy cuts?
Quick manual tightening beats loose clamps every time you slide fence tracks down a bench.
Even pressure distribution stops thread spinouts on soft MDF backing boards and plywood stacks.
Direct palm traction works instantly so mechanics swap blades without hunting for open ended wrenches.
Standardized metric steps lock securely into aluminum t slots and hardwood drill press panels alike.