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HL218-8-4
Hi-Lok™Rivet Pin
Description
protruding shear head - oversized for hl18 - alloy steel cadmium plated
Specifications
| Fastener Length | 0.645 |
|---|---|
| Hardness Rating | 31.0 rockwell c |
| Head Diameter | 0.387 inches minimum and 0.412 inches maximum |
| Head Height | 0.059 inches minimum and 0.069 inches maximum |
| Head Style | Flat chamfer |
| Material | Steel |
| Material Specification | Mil-s-6758 mil spec 1st material response or mil-s-6050 mil spec 2nd material response or mil-s-6098 mil spec 3rd material response or mil-s-6049 mil spec 4th material response |
| Shoulder Diameter | 0.279 inches minimum first shoulder and 0.280 inches maximum first shoulder |
| Shoulder Length | 0.740 inches minimum first shoulder and 0.760 inches maximum first shoulder |
| Shoulder Shape | Round first shoulder |
| Surface Treatment | Cadmium |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.395 inches minimum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for HL218-8-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error