The Pin-Rivet, cataloged under National Stock Number 5320-01-643-2080, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-643-2080 |
| Primary Part Number | HL646-5-4 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.163 INCHES NOMINAL IN |
| Head Height | 0.575 INCHES NOMINAL IN |
| Head Style | COUNTERSUNK W/REVERSE CHAMFER |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNJC |
| Head Major Diameter | 0.314 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HL646-5-4 | Huck International, Inc (USA) |
| HL646-5-4 | West Coast Aerospace, Inc. (USA) |
| HL646-5-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL646-5-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL646-5-4 PRIMARY | Hi-Shear Corporation (USA) |
NSN 5320-01-643-2080 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-643-2080 has 5 manufacturer part numbers on file: HL646-5-4 (Huck International, Inc), HL646-5-4 (West Coast Aerospace, Inc.), HL646-5-4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL646-5-4 (Sps Technologies, Llc Dba PB Fasteners), HL646-5-4 (Hi-Shear Corporation).
Key specifications for HL646-5-4: Shank Diameter: 0.163 INCHES NOMINAL IN; Head Height: 0.575 INCHES NOMINAL IN; Head Style: COUNTERSUNK W/REVERSE CHAMFER; Surface Treatment: PASSIVATE OVERALL. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.