The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-288-1418, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-288-1418 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.438 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Fastener Length | 3.397 INCHES MINIMUM AND 3.412 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | LC+77-1061 36659 MFR REF SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | LC+77-1061 36659 MFR REF SINGLE TREATMENT RESPONSE THREADS |
| Surface Treatment Document and Classification | LC+77-1062 CL 1 36659 MFR REF SINGLE TREATMENT RESPONSE GRIP |
| Thread Length | 0.720 INCHES MINIMUM IN |
| Criticality Code Justification | AAVH |
| Style Designator | COUNTERBORE UNTHREADED |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Counterbore Depth | 2.960 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Counterbore Diameter | 0.625 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Width Between Flats | 1.250 INCHES NOMINAL IN |
| Shoulder Diameter | 0.8765 INCHES MINIMUM AND 0.8770 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.385 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CADMIUM HEAD |
| Surface Treatment | NICKEL GRIP |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP E4340 OVERALL |
| Shoulder Length | 2.627 INCHES MINIMUM AND 2.642 INCHES MAXIMUM 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 | Y |
| Reference | Meaning |
|---|---|
| 1283063-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-288-1418 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-288-1418: Head Height: 0.438 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN; Fastener Length: 3.397 INCHES MINIMUM AND 3.412 INCHES MAXIMUM IN; Surface Treatment Document and Classification: LC+77-1061 36659 MFR REF SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: LC+77-1061 36659 MFR REF SINGLE TREATMENT RESPONSE THREADS. 25 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.