The Washer,flat, cataloged under National Stock Number 5310-01-003-1216, 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 8 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-003-1216 |
| Primary Part Number | 218400 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Overall Diameter | 0.260 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 410 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.174 INCHES NOMINAL IN |
| Thickness | 0.016 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 |
|---|---|
| 218400 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
NSN 5310-01-003-1216 is a Washer,flat, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-003-1216 has 1 manufacturer part number on file: 218400 (Woodward, Inc. Div Fuel Systems and Controls).
2 possible matches (shared part number, not a government interchangeability claim): 5920-01-173-4108, 2540-01-497-8495. Verify interchangeability with system specifications before substitution.
Key specifications for 218400: Overall Diameter: 0.260 INCHES NOMINAL IN; Material Document and Classification: AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.