The Bolt,machine, cataloged under National Stock Number 5306-01-178-8355, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-178-8355 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.531 INCHES MINIMUM AND 0.604 INCHES MAXIMUM IN |
| Fastener Length | 5.590 INCHES MINIMUM AND 5.870 INCHES MAXIMUM IN |
| Thread Length | 2.000 INCHES MINIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM OVERALL |
| Material Document and Classification | QQ-N-286 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.394 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 9 |
| Material | NICKEL ALLOY K-500 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 |
| Reference | Meaning |
|---|---|
| M1222B2N14C232NCNN | 2/2 Government specification standardization U.S. Government activity |
| MIL-S-001222 | 4/1 Identification reference U.S. Government activity |
NSN 5306-01-178-8355 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-178-8355: Head Height: 0.531 INCHES MINIMUM AND 0.604 INCHES MAXIMUM IN; Fastener Length: 5.590 INCHES MINIMUM AND 5.870 INCHES MAXIMUM IN; Thread Length: 2.000 INCHES MINIMUM IN; Hardness Rating: 24.0 ROCKWELL C MINIMUM OVERALL. 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.