The Washer,key, cataloged under National Stock Number 5310-00-941-3756, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-941-3756 |
| Primary Part Number | 399636 |
| 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 | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Split Key Length | 0.110 INCHES NOMINAL IN |
| External Prebent Key Length | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.565 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5516 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 | 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| External Key Quantity | 3 |
| External Prebent Key Angle | 30.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.210 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Angle Between External Keys | 60.0 DEGREES NOMINAL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 399636 | Enjet Aero Manchester Llc (USA) |
| 399636 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| 399636 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 399636 | Satellite Aerospace, Incorporated Dba Satellite Aerospace Inc (USA) |
| 399636 | Trego Inc (USA) |
| Reference | Meaning |
|---|---|
| 399636 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5310-00-941-3756 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-941-3756 has 5 manufacturer part numbers on file: 399636 (Enjet Aero Manchester Llc), 399636 (Alinabal Holdings Corporation Div Engineered Products Group), 399636 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 399636 (Satellite Aerospace, Incorporated Dba Satellite Aerospace Inc), 399636 (Trego Inc).
Key specifications for 399636: Distance From Centerline to Inside of Prebent Key: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Split Key Length: 0.110 INCHES NOMINAL IN; External Prebent Key Length: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.565 INCHES NOMINAL IN. 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.