The Washer,flat, cataloged under National Stock Number 5310-01-043-7753, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-043-7753 |
| Primary Part Number | WA721029 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | United Technologies Corp Electro Systems Inc |
| Status | ACTIVE |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | CELLULOSE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.662 INCHES NOMINAL IN |
| Thickness | 0.059 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 |
|---|---|
| WA721029 PRIMARY | United Technologies Corp Electro Systems Inc (USA) |
| WA721029 PRIMARY | Robert Bosch Llc (USA) |
| D71417 PRIMARY | Cnh Industrial America Llc Dba Cnh America (USA) |
| Reference | Meaning |
|---|---|
| WA721029 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| 62138 | 5/9 Secondary reference Cooper Industries Inc Anco Div |
| 4915175 | C/1 Advisory reference — outside the item-of-supply concept Kalmar AC Inc |
NSN 5310-01-043-7753 is a Washer,flat, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-043-7753 has 3 manufacturer part numbers on file: WA721029 (United Technologies Corp Electro Systems Inc), WA721029 (Robert Bosch Llc), D71417 (Cnh Industrial America Llc Dba Cnh America).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-519-8015, 8465-01-616-7875. Verify interchangeability with system specifications before substitution.
Key specifications for WA721029: Overall Diameter: 1.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: CELLULOSE 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.