The Bolt,assembled Washer, cataloged under National Stock Number 5306-01-539-4554, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Woodruff Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-539-4554 |
| Primary Part Number | 13D0021-208 |
| Item Name | Bolt,assembled Washer |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Woodruff Corporation |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 0.925 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Primary Washer Outside Diameter | 0.465 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Primary Washer Style | FINISHING |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.017 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| Width Between Flats | 0.429 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 FASTENER |
| Material | STEEL COMP 303SE STAND-OFF |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 PRIMARY WASHER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Quantity | 1 |
| 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 |
|---|---|
| 13D0021-208 PRIMARY | Woodruff Corporation (USA) |
| 13D0021-208 PRIMARY | Am Machining, Inc. Dba Am Machining Inc Div Apv Manufacturing & Engineering Co. (USA) |
| 13D0021-208 PRIMARY | American Metals & Machining (USA) |
| 13D0021-208 PRIMARY | Buena Park Tool & Engineering, Inc Dba Buena Park Tool (USA) |
| Reference | Meaning |
|---|---|
| 13D0021-208 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-539-4554 is a Bolt,assembled Washer, manufactured by Woodruff Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-539-4554 has 4 manufacturer part numbers on file: 13D0021-208 (Woodruff Corporation), 13D0021-208 (Am Machining, Inc. Dba Am Machining Inc Div Apv Manufacturing & Engineering Co.), 13D0021-208 (American Metals & Machining), 13D0021-208 (Buena Park Tool & Engineering, Inc Dba Buena Park Tool).
Key specifications for 13D0021-208: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 0.925 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Primary Washer Outside Diameter: 0.465 INCHES MINIMUM AND 0.495 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.