The Bolt,machine, cataloged under National Stock Number 5306-00-877-5556, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-877-5556 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 1.016 INCHES NOMINAL IN |
| Special Test Features | RAPTURE STRENGTH AT 2200 DEG F SHALL NOT BE LESS THAN 47000 PSI IN 100 HOURS DEGF |
| Thread Length | 0.516 INCHES MINIMUM IN |
| Material Document and Classification | MIL-B-7874 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.500 INCHES NOMINAL IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 110000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 90000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| LE20034-4 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NASM7874 | 3/1 Design control — primary reference U.S. Government activity |
| MS20034-4 | 5/9 Secondary reference U.S. Government activity |
| MS20034-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-877-5556 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-877-5556: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 1.016 INCHES NOMINAL IN; Special Test Features: RAPTURE STRENGTH AT 2200 DEG F SHALL NOT BE LESS THAN 47000 PSI IN 100 HOURS DEGF; Thread Length: 0.516 INCHES MINIMUM IN. 18 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.