The Washer,flat, cataloged under National Stock Number 5310-01-417-2541, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fm Af, Llc Dba American Fan Company. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-417-2541 |
| Primary Part Number | 9W-41557 PC.NO.16 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TY2, CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 9W-41557 PC.NO.16 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| 9W-41557 PC.NO.16 | 3/9 Design control — primary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
NSN 5310-01-417-2541 is a Washer,flat, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-417-2541 has 1 manufacturer part number on file: 9W-41557 PC.NO.16 (Fm Af, Llc Dba American Fan Company).
Key specifications for 9W-41557 PC.NO.16: Surface Treatment Document and Classification: QQ-P-416, TY2, CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Material: STEEL OVERALL. 3 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.