Helefastener FH-KB flat head knurled body rivet nuts add load-bearing threads to sheet metal, tube and extrusions from one side only. The knurled body resists spin-out in the hole, while the flat head sits flush against the sheet face after setting. Item number FH-KB-0630 is our standard steel version with Cr3+ zinc plating in white, yellow or black – a RoHS-friendly finish for export assemblies. Across the family, threads run from M3 to M16, covering most electrical enclosure, automotive bracket and HVAC panel applications.
Specifications
| Parameter | Value |
|---|---|
| Item No. | FH-KB-0630 |
| Type | Flat head, knurled round body, open end |
| Material | Steel |
| Surface finish | Cr3+ white / yellow / black zinc |
| Thread range (family) | M3–M16 |
| Installation | Blind, single-side setting with manual, cordless or pneumatic rivet nut tool |
Variants available on request
- Reduced head and countersunk (CSK) head styles
- Closed end bodies to seal the thread against dust and moisture
- Plain (un-knurled) body for thin or soft sheet where knurl marks must be avoided
- Stainless steel bodies for corrosion-critical environments
Grip range and hole size decide whether a rivet nut holds or fails – see our guide on rivet nut grip range and how to prevent pull-through. For a quick selection check, send the sheet thickness and thread you need through the quote form or WhatsApp.