The Washer,recessed, cataloged under National Stock Number 5310-01-185-8056, 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 Legacy Am&m. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-185-8056 |
| Primary Part Number | L4100053-007 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Surface Finish | 32.0 MICROINCHES TOP |
| Style Designator | RECESSED |
| Outside Diameter | 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN |
| Material Thickness | 0.196 INCHES NOMINAL IN |
| Recess Diameter | 0.901 INCHES NOMINAL IN |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Diameter | 0.760 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Recess Angle | 88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| L4100053-007 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5310-01-185-8056 is a Washer,recessed, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-185-8056 has 1 manufacturer part number on file: L4100053-007 (The Boeing Company Div Legacy Am&m).
Key specifications for L4100053-007: Surface Finish: 32.0 MICROINCHES BOTTOM; Surface Finish: 32.0 MICROINCHES TOP; Style Designator: RECESSED; Outside Diameter: 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN. 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.