The Washer,flat, cataloged under National Stock Number 5310-01-503-4422, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Moog Military Aircraft Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-503-4422 |
| Primary Part Number | C64135-002 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Moog Military Aircraft Llc |
| Status | ACTIVE |
| Overall Diameter | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Heat Treatment | ANNEALED |
| Hardness Rating | 42.0 ROCKWELL H MINIMUM AND 59.0 ROCKWELL H MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Inside Left Corner Chamfer Angle | 30.0 DEGREES NOMINAL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.332 INCHES MINIMUM AND 0.342 INCHES MAXIMUM IN |
| Thickness | 0.078 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 |
|---|---|
| A51H30510-11 | Northrop Grumman Systems Corporation (USA) |
| C64135-002 PRIMARY | Moog Military Aircraft Llc (USA) |
| Reference | Meaning |
|---|---|
| A51H30510-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5310-01-503-4422 is a Washer,flat, manufactured by Moog Military Aircraft Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-503-4422 has 2 manufacturer part numbers on file: A51H30510-11 (Northrop Grumman Systems Corporation), C64135-002 (Moog Military Aircraft Llc).
Key specifications for C64135-002: Overall Diameter: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Heat Treatment: ANNEALED; Hardness Rating: 42.0 ROCKWELL H MINIMUM AND 59.0 ROCKWELL H MAXIMUM; 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.