The Bolt,machine, cataloged under National Stock Number 5306-01-266-7309, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-266-7309 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.568 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Fastener Length | 3.360 INCHES MINIMUM AND 3.600 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY2 CL FE/ZN 5 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 2.000 INCHES MINIMUM IN |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL |
| Material Document and Classification | SAE J429 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Minimum Tensile Strength | 60000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 9 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| MS35355-234 | 2/2 Government specification standardization U.S. Government activity |
| FF-B-575 | 4/1 Identification reference U.S. Government activity |
NSN 5306-01-266-7309 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-266-7309: Head Height: 0.568 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN; Fastener Length: 3.360 INCHES MINIMUM AND 3.600 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY2 CL FE/ZN 5 ASSN STD 2ND TREATMENT RESPONSE OVERALL; Thread Length: 2.000 INCHES MINIMUM IN. 18 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.