The Washer,recessed, cataloged under National Stock Number 5310-00-903-4860, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Textron Systems Corporation Dba Textron Systems Corp. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-903-4860 |
| Primary Part Number | 140-007-81-64F6 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Textron Systems Corporation Dba Textron Systems Corp |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Top Recess Diameter | 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Bottom Recess Diameter | 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN |
| Top Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| Style Designator | RECESSED BOTH SIDES |
| Outside Diameter | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN |
| Material Thickness | 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN |
| Bottom Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP H11 OVERALL |
| Hole Diameter | 1.256 INCHES MINIMUM AND 1.276 INCHES MAXIMUM 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 |
|---|---|
| 140-007-81-64F6 | Textron Systems Corporation Dba Textron Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 140-007-81-64F6 | 5/9 Secondary reference U.S. Government activity |
| 140-007-81-64F6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-903-4860 is a Washer,recessed, manufactured by Textron Systems Corporation Dba Textron Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-903-4860 has 1 manufacturer part number on file: 140-007-81-64F6 (Textron Systems Corporation Dba Textron Systems Corp).
Key specifications for 140-007-81-64F6: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Top Recess Diameter: 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Bottom Recess Diameter: 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN. 12 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.