The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-580-9702, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-580-9702 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 1.740 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Thread Length | 0.365 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/6 T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.354 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.220 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.155 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Width Between Flats | 0.688 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.100 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 4 |
| Surface Treatment | CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 1.275 INCHES NOMINAL IN |
| Third Diameter From Head | 0.310 INCHES NOMINAL IN |
| 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 |
|---|---|
| 427R158H01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-580-9702 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-580-9702: Fourth Diameter From Head: 0.431 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN; Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 1.740 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A. 23 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.