The Bolt,assembled Washer, cataloged under National Stock Number 5306-01-056-7973, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Pattonair Usa Inc Dba Incora Div Uniseal Division. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-056-7973 |
| Primary Part Number | AB2534E4 |
| Item Name | Bolt,assembled Washer |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pattonair Usa Inc Dba Incora Div Uniseal Division |
| Status | ACTIVE |
| Head Height | 0.141 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 0.235 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.164 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Material Document and Classification | AISI 431 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Material Document and Classification | AMS3652 ASSN STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | BUTTON |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE FASTENER |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 431 FASTENER |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PRIMARY WASHER |
| Thread Series Designator | UNF |
| Washer Quantity | 1 |
| Head Diameter | 0.469 INCHES MINIMUM AND 0.580 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 |
| Part Number | Manufacturer |
|---|---|
| AB2534E4 PRIMARY | Pattonair Usa Inc Dba Incora Div Uniseal Division (USA) |
| Reference | Meaning |
|---|---|
| 11507667-2 | 5/2 Secondary reference U.S. Government activity |
| 11507667-2 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
| AB2534H4 | 5/9 Secondary reference Pattonair Usa Inc Dba Incora Div Uniseal Division |
| AS353-4S-0.250 | 5/9 Secondary reference Aero-Stat Co |
NSN 5306-01-056-7973 is a Bolt,assembled Washer, manufactured by Pattonair Usa Inc Dba Incora Div Uniseal Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-056-7973 has 1 manufacturer part number on file: AB2534E4 (Pattonair Usa Inc Dba Incora Div Uniseal Division).
Key specifications for AB2534E4: Head Height: 0.141 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Fastener Length: 0.235 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER; Thread Length: 0.164 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN. 19 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.