The Washer,shouldered, cataloged under National Stock Number 5310-01-341-3147, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 13 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-341-3147 |
| Primary Part Number | 211056676 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Shoulder Height | 0.052 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Outside Diameter | 1.456 INCHES NOMINAL IN |
| Material Thickness | 0.225 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 1.064 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 |
|---|---|
| 801-6408783 FIND NO 12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 211056676 PRIMARY | Naval Sea Systems Command (USA) |
| 7550478-DF330643-97-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-DF330643-97-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 211056676CP | Naval Inventory Control Point Mechanicsburg (USA) |
| DF330643-12 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| DF330643-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-DF330643-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6408783 FIND 12 | Naval Sea Systems Command (USA) |
| 801-6408783 FIND 12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-DF330643-97-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| CD-023-09-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-DF330643-12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 211056676 | 5/2 Secondary reference U.S. Government activity |
| 7383858-DF330643-12 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H547-0001-DF330643-12 | 5/2 Secondary reference U.S. Government activity |
| 7550478-DF330643-97-12 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H547-0001-DF330643-97-12 | 5/2 Secondary reference U.S. Government activity |
| G547-0002-DF330643-97-12 | 5/2 Secondary reference U.S. Government activity |
| CD-023-09-12 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 801-6408783 FIND NO 12 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 5310-01-341-3147 is a Washer,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-341-3147 has 13 manufacturer part numbers on file: 801-6408783 FIND NO 12CP (Naval Inventory Control Point Mechanicsburg), 211056676 (Naval Sea Systems Command), 7550478-DF330643-97-12CP (Naval Inventory Control Point Mechanicsburg), H547-0001-DF330643-97-12CP (Naval Inventory Control Point Mechanicsburg), 211056676CP (Naval Inventory Control Point Mechanicsburg) and 8 more.
2 possible matches (shared part number, not a government interchangeability claim): 5325-01-633-4826, 5325-01-659-2051. Verify interchangeability with system specifications before substitution.
Key specifications for 211056676: Shoulder Height: 0.052 INCHES NOMINAL IN; Style Designator: SHOULDERED; Outside Diameter: 1.456 INCHES NOMINAL IN; Material Thickness: 0.225 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN. 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.