The Washer,shouldered, cataloged under National Stock Number 5310-01-077-1939, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Leonardo S.p.a Land & Naval Defence Electronics Division. Government technical data includes 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-077-1939 |
| Primary Part Number | 52X063P001 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo S.p.a Land & Naval Defence Electronics Division |
| Status | ACTIVE |
| Shoulder Height | 0.037 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Outside Diameter | 0.320 INCHES NOMINAL IN |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| Shoulder Diameter | 0.182 INCHES NOMINAL IN |
| Hole Diameter | 0.144 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 |
|---|---|
| 52X063P001 | Leonardo S.p.a Land & Naval Defence Electronics Division (ITA) |
| Reference | Meaning |
|---|---|
| A3155012 | 7/2 Vendor item drawing reference U.S. Government activity |
| 926943 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Div L3 Keo |
| 28485-00192 | 5/9 Secondary reference Leonardo Mw Ltd |
| 7721-5PPS | C/1 Advisory reference — outside the item-of-supply concept Max J C Precision Inc |
| 7721-5PPS | 3/9 Design control — primary reference Thermalloy Co Inc |
NSN 5310-01-077-1939 is a Washer,shouldered, manufactured by Leonardo S.p.a Land & Naval Defence Electronics Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-077-1939 has 1 manufacturer part number on file: 52X063P001 (Leonardo S.p.a Land & Naval Defence Electronics Division).
Key specifications for 52X063P001: Shoulder Height: 0.037 INCHES NOMINAL IN; Style Designator: SHOULDERED; Outside Diameter: 0.320 INCHES NOMINAL IN; Material Thickness: 0.050 INCHES NOMINAL IN. 6 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.