100 Pc 1/4"-20 Unc Rivet Nuts Carbon Steel Zinc Plated Flat Head Knurled Body Threaded Inserts For Heavy Duty Shop Fabrication Rock Solid Workhorse Professional Grade
✔️ 1/4 20 Unc Thread Zinc Steel Flat Head Knurled Body Rivet Nuts
These blind threaded inserts create durable internal grips inside sheet metal panels, tubes, and enclosures where rear access is completely blocked. Mechanics, HVAC techs, and metal fabricators rely on them for quick single side mounting on automotive chassis, equipment housings, and DIY shop projects.
✅ Thread pitch fits 1/4 20 UNC standards for standard bolt engagement✅ High carbon steel core wrapped in a protective yellow zinc coat
✅ Low profile flat head rests perfectly flush against assembled joints
✅ Knurled shank locks aggressively into drilled openings to kill spin
✅ Grip range covers 0.04 to 0.14 inch or 1.0 to 3.6 mm reliably
✅ Drilled 8.8 mm or 0.35 inch pilot holes accept fast drive insertion
✅ Carton delivers exactly 100 replacement pieces pre packed for shop use
💡 Why pick knurled rivet nuts over welding studs for joining thin gauge steel?
This mechanical fastening method is highly handy for pulling inserts into place creating a rigid internal thread that resists vibration loosening during heavy operation. Pulling installs the unit instantly from the outside without needing jigs behind the panel.
- The cold forming process displaces material around the shank to build up solid load bearing walls instantly
- Hardened internal 1/4 20 threads accept standard grade 8 hardware without stripping even under repeated torque cycles
- Zero heat input protects nearby wiring and plastic mounts while delivering factory level yield strength across the joint
- Flush seated design keeps wiring harnesses clear and leaves clean edges for powder coating or painting operations