The Washer,shouldered, cataloged under National Stock Number 5310-00-550-3597, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-550-3597 |
| Primary Part Number | 300790 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Shoulder Height | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | QQ-C-576 SOFT FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.040 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN |
| Material Thickness | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.595 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.450 INCHES MINIMUM AND 0.470 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 5310-00-550-3597 is a Washer,shouldered, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-550-3597 has 3 manufacturer part numbers on file: 300790 (Trego Inc), 300790 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 300790 (Tokyo Judoi Kogyo K.k.).
Key specifications for 300790: Shoulder Height: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Style Designator: SHOULDERED; Material Document and Classification: QQ-C-576 SOFT FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.040 INCHES MINIMUM AND 1.060 INCHES MAXIMUM 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.