The Washer,key, cataloged under National Stock Number 5310-00-377-3937, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-377-3937 |
| Primary Part Number | 4026464 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Overall Distance Including Keys | 5.935 INCHES MINIMUM AND 5.955 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5599 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material Thickness | 0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| External Key Quantity | 8 |
| External Prebent Key Width | 0.315 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 5.440 INCHES MINIMUM AND 5.450 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 | F |
| Part Number | Manufacturer |
|---|---|
| 4026464 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4026464 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 5310PL0723164 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-00-377-3937 is a Washer,key, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-377-3937 has 2 manufacturer part numbers on file: 4026464 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4026464 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4026464: Overall Distance Including Keys: 5.935 INCHES MINIMUM AND 5.955 INCHES MAXIMUM IN; Material Document and Classification: AMS5599 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material Thickness: 0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; External Key Quantity: 8. 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.