The Washer,lock, cataloged under National Stock Number 5310-01-043-7344, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-043-7344 |
| Primary Part Number | Y1-963 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 1.220 INCHES MINIMUM AND 1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM1.245 INCHES MAXIMUM IN |
| Material Thickness | 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.769 INCHES MINIMUM AND 0.769 INCHES MINIMUM AND 0.795 INCHES MAXIMUM0.795 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 |
|---|---|
| 20125-107 | Mission Systems Orchard Park Inc (USA) |
| Y1-963 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| Reference | Meaning |
|---|---|
| Y1-963 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
| 1232-03 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| 20125-107 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
NSN 5310-01-043-7344 is a Washer,lock, manufactured by Mission Systems Orchard Park Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-043-7344 has 2 manufacturer part numbers on file: 20125-107 (Mission Systems Orchard Park Inc), Y1-963 (Mission Systems Orchard Park Inc).
Key specifications for Y1-963: Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 1.220 INCHES MINIMUM AND 1.220 INCHES MINIMUM AND 1.245 INCHES MAXIMUM1.245 INCHES MAXIMUM IN; Material Thickness: 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN; Material: STEEL OVERALL. 5 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.