The Pin-Rivet, cataloged under National Stock Number 5320-01-591-0260, 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 14 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-591-0260 |
| Primary Part Number | HL646-8-10 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Lubrication | SOLID FILM |
| Head Height | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Fastener Length | 1.010 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Head Style | STRAIGHT PAN |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Width Between Flats | 0.094 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.415 INCHES MINIMUM AND 0.440 INCHES MAXIMUM 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 |
|---|---|
| HL646-8-10 PRIMARY | Hi-Shear Corporation (USA) |
| HL646-8-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL646-8-10 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HL646-8-10 | West Coast Aerospace, Inc. (USA) |
| HL646-8-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL646-8-10 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL646-8-10 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| HL646-8-10 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-591-0260 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-591-0260 has 7 manufacturer part numbers on file: HL646-8-10 (Hi-Shear Corporation), HL646-8-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL646-8-10 (Sps Technologies Ltd, Tj Brooks Division), HL646-8-10 (West Coast Aerospace, Inc.), HL646-8-10 (Sps Technologies, Llc Dba PB Fasteners) and 2 more.
Key specifications for HL646-8-10: Shank Diameter: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; Lubrication: SOLID FILM; Head Height: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Fastener Length: 1.010 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN. 14 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.