The Washer,flat, cataloged under National Stock Number 5310-00-251-0806, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Actuation Systems Ltd. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-251-0806 |
| Primary Part Number | CH618-401-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Goodrich Actuation Systems Ltd |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/3,T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/3,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2014 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.266 INCHES NOMINAL IN |
| Thickness | 0.046 INCHES MINIMUM AND 0.050 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 |
|---|---|
| CH618-401-1 PRIMARY | Goodrich Actuation Systems Ltd (GBR) |
NSN 5310-00-251-0806 is a Washer,flat, manufactured by Goodrich Actuation Systems Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-251-0806 has 1 manufacturer part number on file: CH618-401-1 (Goodrich Actuation Systems Ltd).
Key specifications for CH618-401-1: Overall Diameter: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/3,T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/3,T6 FED SPEC 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.