The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-063-6586, 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 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5320-01-063-6586 |
| Primary Part Number | BB421-8-4 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Collar Inside Diameter | 0.188 INCHES NOMINAL IN |
| Collar Overall Height | 0.562 INCHES NOMINAL IN |
| Collar Style | STRAIGHT TYPE |
| Collar Outside Diameter | 0.257 INCHES NOMINAL IN |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| BB421-8-4 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| GS530AG8-4 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5320-01-063-6586 is a Collar,pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-063-6586 has 1 manufacturer part number on file: BB421-8-4 (Hi-Shear Corporation).
Key specifications for BB421-8-4: Collar Inside Diameter: 0.188 INCHES NOMINAL IN; Collar Overall Height: 0.562 INCHES NOMINAL IN; Collar Style: STRAIGHT TYPE; Collar Outside Diameter: 0.257 INCHES NOMINAL IN. 5 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.