The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-273-4383, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-273-4383 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.188 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Seventh Diameter | 3.484 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 2.484 INCHES NOMINAL IN |
| Head Height | 0.281 INCHES NOMINAL IN |
| Sixth Diameter From Head | 0.188 INCHES NOMINAL IN |
| Tenth Diameter From Head | 0.188 INCHES NOMINAL IN |
| Fastener Length | 10.734 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.172 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Tenth Diameter | 5.219 INCHES NOMINAL IN |
| Seventh Diameter From Head | 0.250 INCHES NOMINAL IN |
| Eighth Diameter From Head | 0.188 INCHES NOMINAL IN |
| Thread Length | 0.875 INCHES NOMINAL IN |
| First Diameter From Head | 0.250 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.188 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.391 INCHES NOMINAL IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.188 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Sixth Diameter | 3.281 INCHES NOMINAL IN |
| Point Style | FLAT |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.484 INCHES NOMINAL IN |
| Fifth Diameter From Head | 0.250 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 11 |
| Distance From Largest Bearing Surface of Head to End of Eighth Diameter | 4.281 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Distance From Largest Bearing Surface of Head to End of Ninth Diameter | 4.672 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 2.094 INCHES NOMINAL 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 |
|---|---|
| 3001269-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-273-4383 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-273-4383: Fourth Diameter From Head: 0.188 INCHES NOMINAL IN; Distance From Largest Bearing Surface of Head to End of Seventh Diameter: 3.484 INCHES NOMINAL IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 2.484 INCHES NOMINAL IN; Head Height: 0.281 INCHES NOMINAL IN. 29 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.