The Washer,flat, cataloged under National Stock Number 5310-01-161-1503, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Golden Bear Equipment Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-161-1503 |
| Primary Part Number | 474473 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Golden Bear Equipment Corp |
| Status | ACTIVE |
| Overall Diameter | 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Thickness | 0.090 INCHES MINIMUM AND 0.110 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 |
|---|---|
| 474473 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 474473 PRIMARY | Golden Bear Equipment Corp (USA) |
| 474473 | Enjet Aero Manchester Llc (USA) |
| 474473 PRIMARY | Paradigm Manchester Inc. Dba Pursuit Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 474473 | 5/9 Secondary reference Dynamic Gunver Technologies Llc |
| 474473 | 5/9 Secondary reference Gould E a and Co |
NSN 5310-01-161-1503 is a Washer,flat, manufactured by Golden Bear Equipment Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-161-1503 has 4 manufacturer part numbers on file: 474473 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 474473 (Golden Bear Equipment Corp), 474473 (Enjet Aero Manchester Llc), 474473 (Paradigm Manchester Inc. Dba Pursuit Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-163-4726. Verify interchangeability with system specifications before substitution.
Key specifications for 474473: Overall Diameter: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Material Document and Classification: AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.