The Washer,flat, cataloged under National Stock Number 5310-01-449-9950, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-449-9950 |
| Primary Part Number | 12981721 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072-E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Thickness | 0.007 INCHES MINIMUM AND 0.017 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 |
| Part Number | Manufacturer |
|---|---|
| 12981721 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| 12981721 | Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc (USA) |
| 12981721 | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
NSN 5310-01-449-9950 is a Washer,flat, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-449-9950 has 3 manufacturer part numbers on file: 12981721 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 12981721 (Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc), 12981721 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
Key specifications for 12981721: Surface Treatment Document and Classification: MIL-F-14072-E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL. 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.