The Washer,flat, cataloged under National Stock Number 5310-01-424-5711, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Spx Fluid Power. Government technical data includes 6 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-424-5711 |
| Primary Part Number | 11227-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Spx Fluid Power |
| Status | ACTIVE |
| Overall Diameter | 1.907 INCHES MINIMUM AND 1.927 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.252 INCHES MINIMUM AND 1.262 INCHES MAXIMUM IN |
| Thickness | 0.123 INCHES MINIMUM AND 0.126 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 |
|---|---|
| 11227-1 PRIMARY | Spx Fluid Power (USA) |
NSN 5310-01-424-5711 is a Washer,flat, manufactured by Spx Fluid Power, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-424-5711 has 1 manufacturer part number on file: 11227-1 (Spx Fluid Power).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-617-6105. Verify interchangeability with system specifications before substitution.
Key specifications for 11227-1: Overall Diameter: 1.907 INCHES MINIMUM AND 1.927 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND. 6 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.