The Washer,flat, cataloged under National Stock Number 5310-01-622-9129, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fore Machine Company, Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-622-9129 |
| Primary Part Number | 19D0031-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fore Machine Company, Inc. |
| Status | ACTIVE |
| Overall Diameter | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | TITANIUM ALLOY UNS R56401 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.228 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Thickness | 0.032 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 |
|---|---|
| 19D0031-3 PRIMARY | Fore Machine Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 19D0031-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-622-9129 is a Washer,flat, manufactured by Fore Machine Company, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-622-9129 has 1 manufacturer part number on file: 19D0031-3 (Fore Machine Company, Inc.).
Key specifications for 19D0031-3: Overall Diameter: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: WASHER INFRARED SUPPRESSOR PANEL. 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.