The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-677-8443, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-677-8443 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.500 INCHES NOMINAL IN |
| Fastener Length | 4.270 INCHES MINIMUM AND 4.290 INCHES MAXIMUM IN |
| Thread Length | 1.165 INCHES MINIMUM AND 1.185 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | MIL-S-6050,F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.998 INCHES MINIMUM AND 0.999 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 3.115 INCHES MINIMUM AND 3.295 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.872 INCHES MINIMUM AND 0.882 INCHES MAXIMUM IN |
| Width Between Flats | 1.470 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 2.865 INCHES MINIMUM AND 2.895 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 8630 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.005 INCHES MINIMUM AND 4.025 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| 726777-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-677-8443 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-677-8443: Head Height: 0.500 INCHES NOMINAL IN; Fastener Length: 4.270 INCHES MINIMUM AND 4.290 INCHES MAXIMUM IN; Thread Length: 1.165 INCHES MINIMUM AND 1.185 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM FIRST HOLE IN. 20 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.