The Washer,flat, cataloged under National Stock Number 5310-01-027-5125, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. Government technical data includes 10 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 | 5310-01-027-5125 |
| Primary Part Number | 218580 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Surface Treatment Document and Classification | 151,FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.310 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5516 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5513 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.139 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN |
| Thickness | 0.030 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 | F |
| Part Number | Manufacturer |
|---|---|
| 218580 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
NSN 5310-01-027-5125 is a Washer,flat, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-027-5125 has 1 manufacturer part number on file: 218580 (Woodward, Inc. Div Fuel Systems and Controls).
Key specifications for 218580: Surface Treatment Document and Classification: 151,FSCM 66503 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.310 INCHES NOMINAL IN; Material Document and Classification: AMS 5516 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5513 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.