The Bolt,machine, cataloged under National Stock Number 5306-01-133-4452, 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21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-133-4452 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.266 INCHES MINIMUM AND 0.266 INCHES MINIMUM AND 0.297 INCHES MAXIMUM0.297 INCHES MAXIMUM IN |
| Fastener Length | 1.906 INCHES MINIMUM AND 1.906 INCHES MINIMUM AND 1.953 INCHES MAXIMUM1.953 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.640 INCHES MINIMUM AND 0.640 INCHES MINIMUM AND 0.719 INCHES MAXIMUM0.719 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL32.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON FLATSHEXAGON FLATS |
| Nominal Thread Diameter | 0.375 INCHES0.375 INCHES IN |
| Features Provided | FINISHED HEADFINISHED HEAD |
| Head Style | HEXAGONHEXAGON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Grip Length | 1.234 INCHES MINIMUM AND 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM1.266 INCHES MAXIMUM IN |
| Width Between Flats | 0.554 INCHES MINIMUM AND 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM0.564 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 1616 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Hole Quantity | 33 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC) |
| Hole Type | DRILLEDDRILLED |
| Hole Diameter | 0.065 INCHES MINIMUM AND 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM0.075 INCHES MAXIMUM 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 |
|---|---|
| MS20074-06-17 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-133-4452 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-133-4452: Head Height: 0.266 INCHES MINIMUM AND 0.266 INCHES MINIMUM AND 0.297 INCHES MAXIMUM0.297 INCHES MAXIMUM IN; Fastener Length: 1.906 INCHES MINIMUM AND 1.906 INCHES MINIMUM AND 1.953 INCHES MAXIMUM1.953 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALLQQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.640 INCHES MINIMUM AND 0.640 INCHES MINIMUM AND 0.719 INCHES MAXIMUM0.719 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.