The Washer,key, cataloged under National Stock Number 5310-00-655-9669, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-655-9669 |
| Primary Part Number | 8756978 |
| 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 | 0.219 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.000 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-698 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-698 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-700 FED SPEC 5TH MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Peening Key Length | 0.281 INCHES NOMINAL IN |
| Material Thickness | 0.042 INCHES NOMINAL IN |
| External Straight Key Width | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL |
| Hole Diameter | 0.328 INCHES MINIMUM AND 0.360 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 |
|---|---|
| 8876040 | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA) |
| 8756978 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| 8756978 | Goriziane Group Spa (ITA) |
| 8756978 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| K9669 | 8/1 NATO reproduction reference Kanakas Th. & G. O.e |
| 5310006559669 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5310-00-655-9669 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 5310-00-655-9669 has 4 manufacturer part numbers on file: 8876040 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament), 8756978 (Fnss Savunma Sistemleri Anonim Sirketi), 8756978 (Goriziane Group Spa), 8756978 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8756978: External Straight Key Length: 0.219 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.000 INCHES NOMINAL IN; Style Designator: KEY. 12 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.