The Washer,shouldered, cataloged under National Stock Number 5310-00-855-1307, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-855-1307 |
| Primary Part Number | 1770920-2 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Shoulder Height | 0.046 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | L-P-410 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.375 INCHES NOMINAL IN |
| Material Thickness | 0.093 INCHES NOMINAL IN |
| Shoulder Diameter | 0.230 INCHES NOMINAL IN |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL |
| Hole Diameter | 0.160 INCHES MINIMUM AND 0.170 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 |
NSN 5310-00-855-1307 is a Washer,shouldered, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-855-1307 has 2 manufacturer part numbers on file: 58-590-2 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1770920-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1770920-2: Shoulder Height: 0.046 INCHES NOMINAL IN; Style Designator: SHOULDERED; Material Document and Classification: L-P-410 FED STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.375 INCHES NOMINAL IN. 8 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.