The Washer,recessed, cataloged under National Stock Number 5310-00-230-4680, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-230-4680 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Top Recess Diameter | 0.625 INCHES NOMINAL IN |
| Bottom Recess Diameter | 0.625 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM |
| Top Recess Angle | 100.0 DEGREES NOMINAL |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.875 INCHES NOMINAL IN |
| Material Thickness | 0.190 INCHES NOMINAL IN |
| Bottom Recess Angle | 100.0 DEGREES NOMINAL |
| Test Data Document | 84955-KPS 208 RATING C SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL OVERALL |
| Hole Diameter | 0.563 INCHES MINIMUM AND 0.565 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 |
| Reference | Meaning |
|---|---|
| K641222-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-230-4680 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-230-4680: Top Recess Diameter: 0.625 INCHES NOMINAL IN; Bottom Recess Diameter: 0.625 INCHES NOMINAL IN; Heat Treatment: AS FABRICATED; Hardness Rating: 34.0 ROCKWELL C MINIMUM. 13 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.