The Washer,lock, cataloged under National Stock Number 5310-01-044-0775, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-044-0775 |
| Primary Part Number | 33274 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division |
| Status | ACTIVE |
| Style Designator | DOME INTERNAL TEETH |
| Outside Diameter | 0.802 INCHES MINIMUM AND 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.302 INCHES MINIMUM AND 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM0.322 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 |
|---|---|
| 33274 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division (USA) |
| Reference | Meaning |
|---|---|
| 1518-04 | 3/9 Design control — primary reference Itw Shakeproof Automotive Products |
| 33274 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
| A33274 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand |
NSN 5310-01-044-0775 is a Washer,lock, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-044-0775 has 1 manufacturer part number on file: 33274 (Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division).
2 possible matches (shared part number, not a government interchangeability claim): 6145-01-451-1269, 9630-01-688-0775. Verify interchangeability with system specifications before substitution.
Key specifications for 33274: Style Designator: DOME INTERNAL TEETH; Outside Diameter: 0.802 INCHES MINIMUM AND 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM0.822 INCHES MAXIMUM IN; Material: STEEL OVERALL; Hole Diameter: 0.302 INCHES MINIMUM AND 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM0.322 INCHES MAXIMUM IN. 4 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.