The Nut,plain,extended Washer,round, cataloged under National Stock Number 5310-01-369-1803, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-369-1803 |
| Item Name | Nut,plain,extended Washer,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Washer Outside Diameter | 1.600 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Washer Thickness | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM NUT IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Countersink Angle | 82.0 DEGREES NOMINAL NUT |
| Thread Class | 2B |
| Material | STEEL COMP 316 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1D95990PK-001 | 3/2 Design control — primary reference U.S. Government activity |
| 1D95990PK | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-369-1803 is a Nut,plain,extended Washer,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-369-1803: Overall Height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Washer Outside Diameter: 1.600 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC). 12 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.