The Washer,key, cataloged under National Stock Number 5310-00-780-4722, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-780-4722 |
| Primary Part Number | 359525 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Split Key Length | 0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN |
| Hardness Rating | 95.0 ROCKWELL B MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | AMS 6355 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.335 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.187 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| External Prebent Key Angle | 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM |
| External Prebent Key Width | 0.110 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Material | STEEL COMP 8630 OVERALL |
| Angle Between External Keys | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| Hole Diameter | 0.200 INCHES MINIMUM AND 0.205 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 |
NSN 5310-00-780-4722 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-780-4722 has 2 manufacturer part numbers on file: 359525 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 359525 (Alinabal Holdings Corporation Div Engineered Products Group).
Key specifications for 359525: Distance From Centerline to Inside of Prebent Key: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN; Split Key Length: 0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN; Hardness Rating: 95.0 ROCKWELL B MAXIMUM. 15 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.