The Washer,flat, cataloged under National Stock Number 5310-01-421-3380, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-421-3380 |
| Primary Part Number | 100951-DD032YF |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.312 INCHES MINIMUM IN |
| Thickness | 0.032 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 | X |
| Part Number | Manufacturer |
|---|---|
| 100951-DD032YF PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 100951-DD032YF | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 5310-01-421-3380 is a Washer,flat, manufactured by Textron Aviation Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-421-3380 has 1 manufacturer part number on file: 100951-DD032YF (Textron Aviation Inc).
Key specifications for 100951-DD032YF: Overall Diameter: 0.500 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: ALUMINUM ALLOY 2024 OVERALL. 7 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.