The Washer,key, cataloged under National Stock Number 5310-00-787-8026, 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 9 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-787-8026 |
| Primary Part Number | 413923 |
| 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 | 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Criticality Code Justification | FEAT |
| Material Document and Classification | AMS 5575 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5576 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Material Thickness | 0.056 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| External Key Quantity | 4 |
| External Prebent Key Angle | 13.0 DEGREES MINIMUM AND 17.0 DEGREES MAXIMUM |
| External Prebent Key Width | 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Material | STEEL COMP 347 OR STEEL COMP 321 OVERALL |
| Hole Diameter | 0.438 INCHES MINIMUM AND 0.448 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 413923 | Tokyo Judoi Kogyo K.k. (JPN) |
| 413923 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 413923 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 413923 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| Reference | Meaning |
|---|---|
| 413923 | 5/9 Secondary reference Tokyo Judogi Kogyo Co. |
| 413923 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5310-00-787-8026 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-787-8026 has 4 manufacturer part numbers on file: 413923 (Tokyo Judoi Kogyo K.k.), 413923 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 413923 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 413923 (Alinabal Holdings Corporation Div Engineered Products Group).
Key specifications for 413923: Distance From Centerline to Inside of Prebent Key: 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN; Criticality Code Justification: FEAT; Material Document and Classification: AMS 5575 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5576 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Material Thickness: 0.056 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN. 9 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.