The Washer,flat, cataloged under National Stock Number 5310-00-941-3763, 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 10 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-941-3763 |
| Primary Part Number | 494630 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Thickness | 0.029 INCHES MINIMUM AND 0.033 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 |
|---|---|
| 494630 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| 494630 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 494630 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 494630 | Alamo Aircraft, Ltd. (USA) |
| Reference | Meaning |
|---|---|
| 494630 | 5/9 Secondary reference Tokyo Judogi Kogyo Co. |
| 494630 | 5/9 Secondary reference Guild Electronics Inc |
| 494630 | 5/9 Secondary reference U.S. Government activity |
| 494630 | 5/2 Secondary reference U.S. Government activity |
| 494630 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 494630 | 5/9 Secondary reference Age Logistics Corporation |
NSN 5310-00-941-3763 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-941-3763 has 4 manufacturer part numbers on file: 494630 (Alinabal Holdings Corporation Div Engineered Products Group), 494630 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 494630 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 494630 (Alamo Aircraft, Ltd.).
Key specifications for 494630: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR. 10 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.