The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-224-0069, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-224-0069 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE THREADS |
| Surface Treatment Document and Classification | CVA5-5,TYPE 11B FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE GRIP |
| Internal Thread Length | 0.260 INCHES NOMINAL COUNTERBORE IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) COUNTERBORE |
| Concentric Hole Depth | 0.460 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Internal Thread Direction | RIGHT-HAND COUNTERBORE |
| Thread Length | 0.470 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.096 INCHES NOMINAL FIRST HOLE IN |
| Criticality Code Justification | AAVH |
| Threads Per Inch | 32 COUNTERBORE |
| Style Designator | COUNTERBORE THREADED |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES COUNTERBORE IN |
| Width Between Flats | 0.619 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.4371 INCHES MINIMUM AND 0.4373 INCHES MAXIMUM IN |
| Internal Thread Class | 3B COUNTERBORE |
| Concentric Hole Diameter | 0.1300 INCHES MINIMUM AND 0.1389 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CHROMIUM GRIP |
| Surface Treatment | CADMIUM HEAD |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Test Data Document | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| 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 |
|---|---|
| 26-760520-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-224-0069 is a Bolt,internally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-224-0069: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: CVA5-2 FSCM 80378 MFR REF SINGLE TREATMENT RESPONSE THREADS. 30 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.