The Washer,flat, cataloged under National Stock Number 5310-00-679-6958, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The W.w. Williams Company, Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-679-6958 |
| Primary Part Number | 6758203 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The W.w. Williams Company, Llc |
| Status | ACTIVE |
| Overall Diameter | 0.875 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | COPPER ALLOY OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES NOMINAL IN |
| Thickness | 0.062 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 |
|---|---|
| 10863069 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6758203 PRIMARY | The W.w. Williams Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 897223R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 6758203 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 897223R1 | 5/9 Secondary reference Simmons-Rand Co |
| 5310006796958 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 147128H1 | 5/9 Secondary reference Komatsu American Intl Co |
| 6758203 | 5/9 Secondary reference General Motors Corp |
| 897223R1 | 5/9 Secondary reference U.S. Government activity |
| 147128 | 5/9 Secondary reference Komatsu American Intl Co |
NSN 5310-00-679-6958 is a Washer,flat, manufactured by The W.w. Williams Company, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-679-6958 has 2 manufacturer part numbers on file: 10863069 (U S Army Tank Automotive Command Amsta-Im-Mm), 6758203 (The W.w. Williams Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4030-01-633-4846. Verify interchangeability with system specifications before substitution.
Key specifications for 6758203: Overall Diameter: 0.875 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: COPPER ALLOY OVERALL; 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.