The Washer,keyway, cataloged under National Stock Number 5310-00-474-7026, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-474-7026 |
| Primary Part Number | A51G10553-19 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Capy Machine Shop Inc. Dba Capy Machine Shop Inc |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 1.473 INCHES NOMINAL IN |
| Internal Keyway Width | 0.314 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-8837,TY 2,CL 1 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | GSS5100,FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Color | WHITE OVERALL |
| Surface Treatment | CADMIUM AND PAINT OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL OVERALL |
| Hole Diameter | 2.627 INCHES MINIMUM AND 2.630 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 |
|---|---|
| A51G10553-19 PRIMARY | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| A51G10553-19 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51G10553-19 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 5310-00-474-7026 is a Washer,keyway, manufactured by Capy Machine Shop Inc. Dba Capy Machine Shop Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-474-7026 has 1 manufacturer part number on file: A51G10553-19 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
Key specifications for A51G10553-19: Distance From Centerline to Bottom of Internal Keyway: 1.473 INCHES NOMINAL IN; Internal Keyway Width: 0.314 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-8837,TY 2,CL 1 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-P-23377 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM. 10 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.