The Washer,key, cataloged under National Stock Number 5310-00-639-3865, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-639-3865 |
| Primary Part Number | 6748569 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | CANCELLED |
| Outside Diameter | 2.656 INCHES NOMINAL IN |
| Material Thickness | 0.068 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| External Key Quantity | 17 |
| Hardness Rating | 55.0 ROCKWELL B MAXIMUM |
| Heat Treatment | AS FABRICATED |
| Hole Diameter | 2.130 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Internal Prebent Key Length | 0.188 INCHES NOMINAL IN |
| Overall Distance Including Keys | 3.109 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material Document and Classification | FMS-61100,FSCM 26095 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Style Designator | KEY |
| Internal Prebent Key Width | 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| External Prebent Key Width | 0.230 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5310-00-639-3865 is a Washer,key, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-00-639-3865 has 4 cross-referenced part numbers: 6748569 (Allison Transmission Inc Dba Allison Transmission, Inc), 9039076 (Allison Transmission Inc Dba Allison Transmission, Inc), 6748569 (Associated Aerospace Activities Inc), 6748569 (General Motors Corp).
There is 1 known substitute for 5310-00-639-3865: 6625-00-581-5894. Verify interchangeability with system specifications before substitution.
Key specifications for 6748569: Outside Diameter: 2.656 INCHES NOMINAL IN; Material Thickness: 0.068 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN; External Key Quantity: 17; Hardness Rating: 55.0 ROCKWELL B MAXIMUM. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-00-639-3865 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.