The Bolt,assembled Washer, cataloged under National Stock Number 5306-01-440-7560, 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23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-440-7560 |
| Item Name | Bolt,assembled Washer |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 1.720 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Primary Washer Outside Diameter | 0.845 INCHES NOMINAL IN |
| Thread Length | 0.735 INCHES NOMINAL IN |
| Hole Configuration Style | HEXAGON CORNERS |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DISHED HEXAGON |
| Primary Washer Style | SPLIT HELICAL RING |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.040 INCHES NOMINAL IN |
| Width Between Flats | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | IRON ALLOY 660 OVERALL |
| Hole Quantity | 3 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Quantity | 1 |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 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 |
|---|---|
| 13D0021-616H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-440-7560 is a Bolt,assembled Washer, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-440-7560: Head Height: 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Fastener Length: 1.720 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Primary Washer Outside Diameter: 0.845 INCHES NOMINAL 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.