The Washer,flat, cataloged under National Stock Number 5310-01-197-6423, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Reidville Hydraulics & Mfg 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-197-6423 |
| Primary Part Number | 478 1028-001 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Reidville Hydraulics & Mfg Inc |
| Status | ACTIVE |
| Overall Diameter | 0.984 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.670 INCHES NOMINAL IN |
| Thickness | 0.102 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 |
|---|---|
| 478 1028-001 PRIMARY | Reidville Hydraulics & Mfg Inc (USA) |
| Reference | Meaning |
|---|---|
| 478 1028-001 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 58313-90017 ITEM 066 | 5/9 Secondary reference Abb Control Inc |
NSN 5310-01-197-6423 is a Washer,flat, manufactured by Reidville Hydraulics & Mfg Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-197-6423 has 1 manufacturer part number on file: 478 1028-001 (Reidville Hydraulics & Mfg Inc).
Key specifications for 478 1028-001: Overall Diameter: 0.984 INCHES NOMINAL 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.