The Washer,finishing, cataloged under National Stock Number 5310-01-253-6899, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-253-6899 |
| Primary Part Number | 74A230620-2001 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Style Designator | FINISHING |
| Material Document and Classification | QQ-A-362 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.625 INCHES NOMINAL IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| Environmental Protection | CORROSION RESISTANT |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.192 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 |
|---|---|
| 74A230620-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 74A230620-2001 | 5/9 Secondary reference Gerda Components and Fasteners |
| 74A230620-2001 | 5/9 Secondary reference Alamo Aircraft, Ltd. |
| 74A230620-2001 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5310-01-253-6899 is a Washer,finishing, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-253-6899 has 1 manufacturer part number on file: 74A230620-2001 (The Boeing Company Div Defense).
Key specifications for 74A230620-2001: Overall Height: 0.099 INCHES NOMINAL IN; Style Designator: FINISHING; Material Document and Classification: QQ-A-362 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.625 INCHES NOMINAL IN. 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.