The Washer,flat, cataloged under National Stock Number 5310-00-017-1665, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 9 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 | 5310-00-017-1665 |
| Primary Part Number | 34AA51A21-16 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Surface Finish | 68.0 MICROINCHES ALL SURFACES |
| Overall Diameter | 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Material Document and Classification | SM 1598 FSCM 35351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| Thickness | 0.0235 INCHES MINIMUM AND 0.0265 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 |
|---|---|
| 34AA51A21-16 PRIMARY | Ge Aviation Systems Llc (USA) |
NSN 5310-00-017-1665 is a Washer,flat, manufactured by Ge Aviation Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-017-1665 has 1 manufacturer part number on file: 34AA51A21-16 (Ge Aviation Systems Llc).
Key specifications for 34AA51A21-16: Surface Finish: 68.0 MICROINCHES ALL SURFACES; Overall Diameter: 0.373 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Material Document and Classification: SM 1598 FSCM 35351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.