The Washer,flat, cataloged under National Stock Number 5310-00-474-0520, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-474-0520 |
| Primary Part Number | 54173 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.890 INCHES NOMINAL IN |
| Thickness | 0.060 INCHES NOMINAL 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 |
|---|---|
| 54173 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 54173 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 54173 | 3/9 Design control — primary reference Goodrich Corp Dba Goodrich Corp |
NSN 5310-00-474-0520 is a Washer,flat, manufactured by Goodrich Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-474-0520 has 1 manufacturer part number on file: 54173 (Goodrich Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-053-4690, 6680-01-121-6140, 6680-01-496-8583. Verify interchangeability with system specifications before substitution.
Key specifications for 54173: Overall Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: COPPER ALLOY OVERALL. 7 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.