The Bolt,shear, cataloged under National Stock Number 5306-01-520-7491, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-520-7491 |
| Primary Part Number | BACB30NM-6K8 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Head Height | 0.048 INCHES MAXIMUM IN |
| Fastener Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Thread Length | 0.325 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.112 INCHES NOMINAL IN |
| Grip Diameter | 0.1881 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 95000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.270 INCHES MINIMUM 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 |
|---|---|
| BACB30NM-6K8 | Hi-Shear Corporation (USA) |
| BACB30NM-6K8 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30NM-6K8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30NM-6K8 | West Coast Aerospace, Inc. (USA) |
| BACB30NM-6K8 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| BACB30NM-6K8 | Huck International, Inc (USA) |
| BACB30NM-6K8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30NW6K8 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-520-7491 is a Bolt,shear, manufactured by Hi-Shear Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-520-7491 has 7 manufacturer part numbers on file: BACB30NM-6K8 (Hi-Shear Corporation), BACB30NM-6K8 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30NM-6K8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30NM-6K8 (West Coast Aerospace, Inc.), BACB30NM-6K8 (Sps Technologies Ltd, Tj Brooks Division) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 5306-01-669-4061. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30NM-6K8: Head Height: 0.048 INCHES MAXIMUM IN; Fastener Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Thread Length: 0.325 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN. 16 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.