The Washer,flat, cataloged under National Stock Number 5310-00-599-0302, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-599-0302 |
| Primary Part Number | 0613056 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Overall Diameter | 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Material Document and Classification | 711,FSCM 71379 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | CORK OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.125 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Thickness | 0.031 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 |
|---|---|
| S350 | Cessna Aircraft Co Fluid Power Div (USA) |
| 0613056 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| S350 | 5/9 Secondary reference Cessna Aircraft Company Dba Textron Aviation |
| 0613056 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
| S350 | 5/9 Secondary reference Regal Air, Inc. |
NSN 5310-00-599-0302 is a Washer,flat, manufactured by Textron Aviation Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-599-0302 has 2 manufacturer part numbers on file: S350 (Cessna Aircraft Co Fluid Power Div), 0613056 (Textron Aviation Inc).
3 possible matches (shared part number, not a government interchangeability claim): 3442-00-729-3879, 5950-01-184-8428, 7035-01-575-0114. Verify interchangeability with system specifications before substitution.
Key specifications for 0613056: Overall Diameter: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN; Material Document and Classification: 711,FSCM 71379 MFR REF 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.