The Washer,flat, cataloged under National Stock Number 5310-00-025-8402, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-025-8402 |
| Primary Part Number | W0-10SS |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems |
| Status | ACTIVE |
| Overall Diameter | 0.438 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.190 INCHES NOMINAL IN |
| Thickness | 0.036 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 |
|---|---|
| 525-10SS | Honeywell Intl Inc Defense Avionics Systems (USA) |
| W0-10SS PRIMARY | Honeywell Intl Inc Defense Avionics Systems (USA) |
| 2L4494 | Caterpillar Inc Div Caterpillar Defense (USA) |
| 92701100000 | Honeywell Intl Inc Defense Avionics Systems (USA) |
| Reference | Meaning |
|---|---|
| W0-10SS | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| 92701100000 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| 525-10SS | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| CE70 | 5/9 Secondary reference Century Electric Inc |
NSN 5310-00-025-8402 is a Washer,flat, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-025-8402 has 4 manufacturer part numbers on file: 525-10SS (Honeywell Intl Inc Defense Avionics Systems), W0-10SS (Honeywell Intl Inc Defense Avionics Systems), 2L4494 (Caterpillar Inc Div Caterpillar Defense), 92701100000 (Honeywell Intl Inc Defense Avionics Systems).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-105-2552. Verify interchangeability with system specifications before substitution.
Key specifications for W0-10SS: Overall Diameter: 0.438 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING 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.