The Washer,key, cataloged under National Stock Number 5310-00-655-9668, 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 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-655-9668 |
| Primary Part Number | 10863380 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| External Straight Key Length | 0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.250 INCHES NOMINAL IN |
| Outside Diameter | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Peening Key Length | 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN |
| Material Thickness | 0.042 INCHES NOMINAL IN |
| External Straight Key Width | 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN |
| External Key Quantity | 3 |
| Material | STEEL OVERALL |
| Hole Diameter | 0.375 INCHES MINIMUM AND 0.437 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 |
|---|---|
| 10863380 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| 10863380 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 8866748 | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA) |
| 10863380 | Goriziane Group Spa (ITA) |
| Reference | Meaning |
|---|---|
| 10082560 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 5310PL0898702 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5310006559668 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-655-9668 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 5310-00-655-9668 has 4 manufacturer part numbers on file: 10863380 (Fnss Savunma Sistemleri Anonim Sirketi), 10863380 (U S Army Tank Automotive Command Amsta-Im-Mm), 8866748 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament), 10863380 (Goriziane Group Spa).
Key specifications for 10863380: External Straight Key Length: 0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.250 INCHES NOMINAL IN; Outside Diameter: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Peening Key Length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN. 9 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.