The Bolt,machine, cataloged under National Stock Number 5306-01-574-8382, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-01-574-8382 |
| Primary Part Number | BACB30LE5K21 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.050 INCHES NOMINAL IN |
| Head Height | 0.290 INCHES NOMINAL IN |
| Fastener Length | 1.405 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.580 INCHES NOMINAL IN |
| Thread Length | 0.593 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.312 INCHES NOMINAL IN |
| Width Between Flats | 0.418 INCHES MINIMUM AND 0.434 INCHES MAXIMUM IN |
| Grip Diameter | 0.312 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| BACB30LE5K21 | Howmet Global Fastening Systems Inc (USA) |
| BACB30LE5K21 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| BACB30LE5K21 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-574-8382 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-574-8382 has 2 manufacturer part numbers on file: BACB30LE5K21 (Howmet Global Fastening Systems Inc), BACB30LE5K21 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-669-3934. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30LE5K21: Extended Washer Thickness: 0.050 INCHES NOMINAL IN; Head Height: 0.290 INCHES NOMINAL IN; Fastener Length: 1.405 INCHES NOMINAL IN; Extended Washer Diameter: 0.580 INCHES NOMINAL 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.