The Washer,key, cataloged under National Stock Number 5310-00-331-9195, 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 16 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-331-9195 |
| Primary Part Number | 195711 |
| 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 | 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Split Key Length | 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.789 INCHES MINIMUM AND 0.809 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5521 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.520 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN |
| External Tapered Key Width | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Material Thickness | 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| External Straight Key Width | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| External Prebent Key Angle | 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM |
| External Prebent Key Width | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Material | STEEL COMP 310 OVERALL |
| Angle Between External Keys | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM |
| Hole Diameter | 0.315 INCHES MINIMUM AND 0.325 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 |
|---|---|
| 195711 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| 195711 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 195711 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 195711 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 5310-00-331-9195 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-331-9195 has 3 manufacturer part numbers on file: 195711 (Alinabal Holdings Corporation Div Engineered Products Group), 195711 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 195711 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 195711: Distance From Centerline to Inside of Prebent Key: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Split Key Length: 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; External Prebent Key Length: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.789 INCHES MINIMUM AND 0.809 INCHES MAXIMUM IN. 16 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.