The Rivet,blind, cataloged under National Stock Number 5320-00-574-6640, 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 | 5320-00-574-6640 |
| Primary Part Number | BB351-6-4 |
| Item Name | Rivet,blind |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.188 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Expansion Device | THREADED STEM |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| Grip Length | 0.250 INCHES NOMINAL IN |
| Shank Style | THREADED SELF-PLUGGING SHANK W/SLEEVE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Material | STEEL COMP 305 OVERALL |
| Head Major Diameter | 0.377 INCHES MINIMUM AND 0.381 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 |
|---|---|
| BB351-6-4 PRIMARY | Hi-Shear Corporation (USA) |
| BB351-6-4 | Safran Aerosystems Ex Safran Aerotechnics Plaisir (FRA) |
| BB351-6-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BB351-6-4 | Satair A/s (DNK) |
| BB351-6-4 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
NSN 5320-00-574-6640 is a Rivet,blind, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-574-6640 has 5 manufacturer part numbers on file: BB351-6-4 (Hi-Shear Corporation), BB351-6-4 (Safran Aerosystems Ex Safran Aerotechnics Plaisir), BB351-6-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), BB351-6-4 (Satair A/s), BB351-6-4 (Fairchild Fasteners Europe - Vsd Gmbh).
Key specifications for BB351-6-4: Shank Diameter: 0.188 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Expansion Device: THREADED STEM; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE 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.