The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-343-1079, 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20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-343-1079 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.4919 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Head Height | 0.140 INCHES NOMINAL IN |
| Fastener Length | 1.700 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.395 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Thread Length | 0.290 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 6414 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.265 INCHES MINIMUM AND 1.275 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DEE |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.617 INCHES MINIMUM AND 0.618 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.093 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 4 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4340 OVERALL |
| Third Diameter From Head | 0.426 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 1.000 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 |
|---|---|
| 17P1C2115-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-343-1079 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-343-1079: Fourth Diameter From Head: 0.4919 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Head Height: 0.140 INCHES NOMINAL IN; Fastener Length: 1.700 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.395 INCHES MINIMUM AND 0.400 INCHES MAXIMUM 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.