The Bolt,machine, cataloged under National Stock Number 5306-00-273-5218, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-273-5218 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.500 INCHES NOMINAL IN |
| Fastener Length | 6.000 INCHES NOMINAL IN |
| Thread Length | 4.062 INCHES MINIMUM IN |
| Material Document and Classification | 46-S-17D FSCM 21387 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Features Provided | CASEHARDENED AND FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.000 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| TD1728C | 5/9 Secondary reference U.S. Government activity |
| MAFB3087EPC102 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-00-273-5218 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-273-5218: Head Height: 0.500 INCHES NOMINAL IN; Fastener Length: 6.000 INCHES NOMINAL IN; Thread Length: 4.062 INCHES MINIMUM IN; Material Document and Classification: 46-S-17D FSCM 21387 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 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.