The Washer,flat, cataloged under National Stock Number 5310-01-480-7144, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rosemount Aerospace Inc Dba Rosemount Aerospace Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-480-7144 |
| Primary Part Number | C20885-0022 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rosemount Aerospace Inc Dba Rosemount Aerospace Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.437 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Thickness | 0.040 INCHES MINIMUM AND 0.044 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 |
|---|---|
| C20885-0022 PRIMARY | Rosemount Aerospace Inc Dba Rosemount Aerospace Inc (USA) |
| C20885-0022 | J. T. D. Stamping Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 10335278 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| C20885 | 7/2 Vendor item drawing reference Rosemount Aerospace Inc Dba Rosemount Aerospace Inc |
| C20885-0022 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-480-7144 is a Washer,flat, manufactured by Rosemount Aerospace Inc Dba Rosemount Aerospace Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-480-7144 has 2 manufacturer part numbers on file: C20885-0022 (Rosemount Aerospace Inc Dba Rosemount Aerospace Inc), C20885-0022 (J. T. D. Stamping Co Inc).
Key specifications for C20885-0022: Surface Treatment Document and Classification: MIL-C-13924,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.437 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL. 10 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.