The Washer,flat, cataloged under National Stock Number 5310-01-599-2939, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Department of Defense Project Manager-Mobile Electric Power. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-599-2939 |
| Primary Part Number | 04-20118 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Department of Defense Project Manager-Mobile Electric Power |
| Status | ACTIVE |
| Overall Diameter | 31.0 MILLIMETERS MINIMUM AND 32.5 MILLIMETERS MAXIMUM MM |
| Hardness Rating | 65.0 ROCKWELL F MAXIMUM |
| Material Document and Classification | ASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 110 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 20.9 MILLIMETERS MINIMUM AND 23.5 MILLIMETERS MAXIMUM MM |
| Thickness | 1.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 04-20118 PRIMARY | Department of Defense Project Manager-Mobile Electric Power (USA) |
NSN 5310-01-599-2939 is a Washer,flat, manufactured by Department of Defense Project Manager-Mobile Electric Power, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-599-2939 has 1 manufacturer part number on file: 04-20118 (Department of Defense Project Manager-Mobile Electric Power).
Key specifications for 04-20118: Overall Diameter: 31.0 MILLIMETERS MINIMUM AND 32.5 MILLIMETERS MAXIMUM MM; Hardness Rating: 65.0 ROCKWELL F MAXIMUM; Material Document and Classification: ASTM B152 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.