The Washer,key, cataloged under National Stock Number 5310-00-509-6102, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-509-6102 |
| Primary Part Number | 265031 |
| 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 | 0.530 INCHES NOMINAL IN |
| Split Key Length | 0.220 INCHES NOMINAL IN |
| External Prebent Key Length | 0.100 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.160 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.825 INCHES NOMINAL IN |
| External Tapered Key Width | 0.470 INCHES NOMINAL IN |
| Material Thickness | 0.029 INCHES NOMINAL IN |
| External Key Quantity | 3 |
| External Prebent Key Angle | 30.0 DEGREES NOMINAL |
| External Prebent Key Width | 0.205 INCHES NOMINAL IN |
| Material | STEEL COMP 321 OVERALL |
| Angle Between External Keys | 60.0 DEGREES NOMINAL |
| Hole Diameter | 0.520 INCHES NOMINAL 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 |
|---|---|
| 265031 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 265031 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| Reference | Meaning |
|---|---|
| 265031 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 265031 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 5310-00-509-6102 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-509-6102 has 2 manufacturer part numbers on file: 265031 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 265031 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring).
1 possible match (shared part number, not a government interchangeability claim): 6625-00-928-5412. Verify interchangeability with system specifications before substitution.
Key specifications for 265031: Distance From Centerline to Inside of Prebent Key: 0.530 INCHES NOMINAL IN; Split Key Length: 0.220 INCHES NOMINAL IN; External Prebent Key Length: 0.100 INCHES NOMINAL IN; Overall Distance Including Keys: 1.160 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.