The Washer,key, cataloged under National Stock Number 5310-00-042-5876, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-042-5876 |
| Primary Part Number | 02-15442 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Internal Straight Key Width | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.3995 INCHES MINIMUM AND 0.4020 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.225 INCHES MINIMUM AND 1.235 INCHES MAXIMUM IN |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM |
| Style Designator | KEY |
| Outside Diameter | 1.104 INCHES MINIMUM AND 1.109 INCHES MAXIMUM IN |
| Material Thickness | 0.106 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| External Straight Key Width | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| Minimum Tensile Strength | 100000 POUNDS PER SQUARE INCH LBS |
| Test Data Document | 81349-MIL-I-6868 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 CORROSION RESISTING OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.952 INCHES MINIMUM AND 0.957 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 |
|---|---|
| 02-15442 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 02-15442 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-042-5876 is a Washer,key, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-042-5876 has 1 manufacturer part number on file: 02-15442 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 02-15442: Internal Straight Key Width: 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.3995 INCHES MINIMUM AND 0.4020 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.225 INCHES MINIMUM AND 1.235 INCHES MAXIMUM IN; Heat Treatment: AS FABRICATED. 15 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.