The Washer,recessed, cataloged under National Stock Number 5310-00-101-7811, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-101-7811 |
| Primary Part Number | N122005 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Outside Diameter | 0.840 INCHES NOMINAL IN |
| Recess Depth | 0.0645 INCHES NOMINAL IN |
| Material Thickness | 0.035 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.472 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 |
|---|---|
| N122005 | Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited (GBR) |
| Reference | Meaning |
|---|---|
| N122005 | 3/9 Design control — primary reference Safran Electrical & Power Uk Limited |
| N122005 | 5/9 Secondary reference Transaero, Inc. |
| N122005 | 5/9 Secondary reference Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
NSN 5310-00-101-7811 is a Washer,recessed, manufactured by Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-101-7811 has 1 manufacturer part number on file: N122005 (Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited).
Key specifications for N122005: Overall Height: 0.277 INCHES NOMINAL IN; Style Designator: RECESSED; Outside Diameter: 0.840 INCHES NOMINAL IN; Recess Depth: 0.0645 INCHES NOMINAL IN. 6 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.