The Washer,key, cataloged under National Stock Number 5310-01-032-6478, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-032-6478 |
| Primary Part Number | 2489158 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Internal Straight Key Width | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.198 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.600 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| External Straight Key Width | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| External Key Quantity | 12 |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1010 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.470 INCHES MINIMUM AND 0.480 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 |
|---|---|
| 2489158 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 2489158 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
| 2489158 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-032-6478 is a Washer,key, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-032-6478 has 1 manufacturer part number on file: 2489158 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 2489158: Internal Straight Key Width: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.198 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN. 14 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.