The Washer,flat, cataloged under National Stock Number 5310-01-005-8653, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-005-8653 |
| Primary Part Number | 709373CL8 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Overall Diameter | 0.445 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 410 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.317 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Thickness | 0.0218 INCHES MINIMUM AND 0.0222 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 |
|---|---|
| 709373CL8 | Metal Products Corp (USA) |
| 709373CL8 | The United Tool & Die Company (USA) |
| 709373CL8 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 709373CL8 | Paradigm Manchester Inc. Dba Pursuit Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 709373CL8 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-005-8653 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-005-8653 has 4 manufacturer part numbers on file: 709373CL8 (Metal Products Corp), 709373CL8 (The United Tool & Die Company), 709373CL8 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 709373CL8 (Paradigm Manchester Inc. Dba Pursuit Aerospace).
Key specifications for 709373CL8: Overall Diameter: 0.445 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN; Material Document and Classification: AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.