The Washer,key, cataloged under National Stock Number 5310-00-262-5500, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-262-5500 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.182 INCHES MINIMUM AND 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM0.187 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.072 INCHES NOMINAL0.072 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.500 INCHES MINIMUM AND 1.500 INCHES MINIMUM AND 1.520 INCHES MAXIMUM1.520 INCHES MAXIMUM IN |
| Style Designator | KEYKEY |
| Material Document and Classification | MIL-S-698 MIL SPEC ALL MATERIAL RESPONSES OVERALLMIL-S-698 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.980 INCHES MINIMUM AND 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM1.020 INCHES MAXIMUM IN |
| Material Thickness | 0.056 INCHES MINIMUM AND 0.056 INCHES MINIMUM AND 0.068 INCHES MAXIMUM0.068 INCHES MAXIMUM IN |
| External Straight Key Width | 0.180 INCHES MINIMUM AND 0.180 INCHES MINIMUM AND 0.220 INCHES MAXIMUM0.220 INCHES MAXIMUM IN |
| External Key Quantity | 88 |
| Surface Treatment | PHOSPHATE OVERALLPHOSPHATE OVERALL |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| Internal Key Quantity | 11 |
| Hole Diameter | 0.656 INCHES MINIMUM AND 0.656 INCHES MINIMUM AND 0.665 INCHES MAXIMUM0.665 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 |
| Reference | Meaning |
|---|---|
| 281746PC6 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-262-5500 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-262-5500: Internal Straight Key Width: 0.182 INCHES MINIMUM AND 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM0.187 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.072 INCHES NOMINAL0.072 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.500 INCHES MINIMUM AND 1.500 INCHES MINIMUM AND 1.520 INCHES MAXIMUM1.520 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.