The Washer,lock, cataloged under National Stock Number 5310-01-042-2804, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-042-2804 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Hardness Rating | 82.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 82.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 84.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM84.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM |
| Criticality Code Justification | TEST AND TEST AND ZZZYZZZY |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.506 INCHES MINIMUM AND 0.506 INCHES MINIMUM AND 0.533 INCHES MAXIMUM0.533 INCHES MAXIMUM IN |
| Material Thickness | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| Surface Treatment | NICKEL AND CHROMIUM OVERALL |
| Test Data Document | 81349-MIL-P-23199 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 COMP 1060 OR STEEL COMP 1070 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL |
| Hole Diameter | 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| P6644 | 3/1 Design control — primary reference Clark-Reliance Llc Dba Jerguson Gage & Valve |
| P-6644 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| E246PC28 | 5/9 Secondary reference Clark-Reliance Llc Dba Jerguson Gage & Valve |
NSN 5310-01-042-2804 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-042-2804: Special Test Features: SPECIAL QUALITY CONTROL TESTING; Hardness Rating: 82.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 82.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 84.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM84.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM; Criticality Code Justification: TEST AND TEST AND ZZZYZZZY; Style Designator: SPLIT HELICAL-RIGHT HAND. 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.