A 9C39M120856 is a carbon steel parallel machine key meeting DIN 6885A, with a width of 12 mm, height of 8 mm, and length of 56 mm. The key is designed for transmitting torque in mechanical assemblies and features a tolerance class of h9 for both width and height dimensions. The material is carbon steel, with dimensional tolerances specified as 0/-0.043 mm for widths of 12 mm and above. The key has a round-ended profile and is manufactured to metric dimensions as per the standard.
Industrial fasteners are hardware devices that join two or more items together, creating a semi-permanent or permanent connection. The fasteners most frequently used by machinery designers are screws, nuts, retaining rings, and various types of pins because of the basic role that they play in the assembly of mechanisms. Various industrial hardware components are used in the assembly process including knobs, washers, spacers, shims, handles, springs, spring-powered reels, and ball plunger screws.
Fasteners play a vital role in a wide range of applications, from everyday household items to medical devices, robotics, and even outer space. Careful consideration must be given before selecting the most appropriate fastener for an application.
Download Reference Tables to help with selection:
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Machine Keys and Keystock |
| Product Number | A 9C39M120856 |
| Product Name | 12mm wide BY 8mm Height, 56mm Long Carbon steel machine key (per DIN 6885A) |
| Height | 0.3150 inch (8 mm) |
