The Washer,key, cataloged under National Stock Number 5310-00-230-5196, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Capy Machine Shop Inc. Dba Capy Machine Shop Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-230-5196 |
| Primary Part Number | A51B61052-19 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Capy Machine Shop Inc. Dba Capy Machine Shop Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-8837,TYPE 2 CLASS1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.252 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.830 INCHES NOMINAL IN |
| Material Thickness | 0.045 INCHES NOMINAL IN |
| External Straight Key Width | 0.210 INCHES NOMINAL IN |
| External Key Quantity | 7 |
| Surface Treatment | CADMIUM OVERALL |
| 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 OVERALL |
| Hole Diameter | 0.626 INCHES MINIMUM AND 0.636 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 |
|---|---|
| A51B61052-19 PRIMARY | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| A51B61052-19 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51B61052-19 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5310-00-230-5196 is a Washer,key, manufactured by Capy Machine Shop Inc. Dba Capy Machine Shop Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-230-5196 has 1 manufacturer part number on file: A51B61052-19 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
Key specifications for A51B61052-19: Surface Treatment Document and Classification: MIL-C-8837,TYPE 2 CLASS1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.252 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-S-698,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.