The Washer,key, cataloged under National Stock Number 5310-01-026-0392, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-026-0392 |
| Primary Part Number | 11655771 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Internal Straight Key Width | 0.355 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 1.830 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.355 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 5.300 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 4.680 INCHES NOMINAL IN |
| Material Thickness | 0.090 INCHES NOMINAL IN |
| External Key Quantity | 19 |
| External Prebent Key Angle | 45.0 DEGREES NOMINAL |
| Surface Treatment | CADMIUM OVERALL |
| External Prebent Key Width | 0.355 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 3.900 INCHES NOMINAL 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 |
|---|---|
| 11655771 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 5310010260392 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-01-026-0392 is a Washer,key, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-026-0392 has 1 manufacturer part number on file: 11655771 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11655771: Internal Straight Key Width: 0.355 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 1.830 INCHES NOMINAL IN; Internal Prebent Key Width: 0.355 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Overall Distance Including Keys: 5.300 INCHES NOMINAL IN. 13 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.