The Bolt,shear, cataloged under National Stock Number 5306-01-643-1856, 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23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-643-1856 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 0.548 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416,TYPE II,CLASS 2 NATIONAL STD SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.438 INCHES NOMINAL IN |
| Material Document and Classification | AMS6349 OR 6382 NATIONAL STD 1ST MATERIAL RESPONSE OR AMS6415 OR 6484 NATIONAL STD 2ND MATERIAL RESPONSE OR AMS6322 NATIONAL STD 3RD MATERIAL RESPONSE FASTENER |
| Material Document and Classification | MIL-DTL-18240 AND QPL-18240 GOVERNMENT STD/SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS6203 THRU 6220 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Locking Feature | PATCH THREADS |
| Surface Treatment | CADMIUM FASTENER |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | PLASTIC LOCKING FEATURE |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS6205L2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-643-1856 is a Bolt,shear, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-643-1856: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Fastener Length: 0.548 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN. 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.