The Washer,finishing, cataloged under National Stock Number 5310-01-104-9367, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-104-9367 |
| Primary Part Number | A51B31206-11 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Recess Diameter | 0.332 INCHES NOMINAL IN |
| Hole Diameter | 0.186 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Recess Angle | 100.0 DEGREES NOMINAL |
| 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 |
|---|---|
| A51B31206-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51B31206-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51B31206-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 5310-01-104-9367 is a Washer,finishing, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-104-9367 has 1 manufacturer part number on file: A51B31206-11 (Northrop Grumman Systems Corporation).
Key specifications for A51B31206-11: Material Thickness: 0.040 INCHES NOMINAL IN; Recess Diameter: 0.332 INCHES NOMINAL IN; Special Features: RECTANGULAR PERIPHERAL SHAPE 1.040 IN. LG AND 0.625 IN. WIDE; TWO DRILLED HOLES 0.070 IN. MIN AND 0.075 IN. MAX DIA IN; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 4 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.