The Bolt,machine, cataloged under National Stock Number 5306-00-209-3502, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Filters Inc. Government technical data includes 13 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 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 | 5306-00-209-3502 |
| Primary Part Number | 1A33 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Filters Inc |
| Status | ACTIVE |
| Head Height | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 3.547 INCHES MINIMUM AND 3.577 INCHES MAXIMUM IN |
| Thread Length | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 1A33 PRIMARY | General Filters Inc (USA) |
NSN 5306-00-209-3502 is a Bolt,machine, manufactured by General Filters Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-209-3502 has 1 manufacturer part number on file: 1A33 (General Filters Inc).
1 possible match (shared part number, not a government interchangeability claim): 5970-01-013-8611. Verify interchangeability with system specifications before substitution.
Key specifications for 1A33: Head Height: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Fastener Length: 3.547 INCHES MINIMUM AND 3.577 INCHES MAXIMUM IN; Thread Length: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 13 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.