The Washer,flat, cataloged under National Stock Number 5310-01-174-8252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Specialty Washer Co of South Carolina Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-174-8252 |
| Primary Part Number | WA400162 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Specialty Washer Co of South Carolina Inc |
| Status | ACTIVE |
| Overall Diameter | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.253 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thickness | 0.090 INCHES MINIMUM AND 0.095 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 |
|---|---|
| WA400162 | Specialty Washer Co of South Carolina Inc (USA) |
| Reference | Meaning |
|---|---|
| WA1997 | 5/9 Secondary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
| 687108C1 | 5/9 Secondary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
| WA400162 | 3/9 Design control — primary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
| W | 5/9 Secondary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
NSN 5310-01-174-8252 is a Washer,flat, manufactured by Specialty Washer Co of South Carolina Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-174-8252 has 1 manufacturer part number on file: WA400162 (Specialty Washer Co of South Carolina Inc).
Key specifications for WA400162: Overall Diameter: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL 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.