The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-343-1083, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-343-1083 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Fourth Diameter From Head | 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Sixth Diameter From Head | 1.113 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Fastener Length | 5.705 INCHES MINIMUM AND 5.795 INCHES MAXIMUM IN |
| Thread Length | 0.753 INCHES NOMINAL IN |
| Material Document and Classification | AMS 6414 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 1.170 INCHES MINIMUM AND 1.180 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 1.125 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN |
| Width Between Flats | 1.500 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.125 INCHES NOMINAL IN |
| Fifth Diameter From Head | 1.000 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4340 OVERALL |
| Third Diameter From Head | 0.625 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 1.900 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 |
|---|---|
| 17P1C2116-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-343-1083 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-343-1083: Fourth Diameter From Head: 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Sixth Diameter From Head: 1.113 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Fastener Length: 5.705 INCHES MINIMUM AND 5.795 INCHES MAXIMUM IN. 21 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.