TO-5 & TO39 & TO-17 black transistor pads

Universal TO-5 ,TO-39 & TO-17 black polyester transistor insulating pads. 

Suitable for three and four pin devices.   

Four TO-17 centre holes are square, so can be used with square pin devices and have long entry slopes for easy insertion.  

The four TO-5/39 are simply straight through holes. 

see outline diagram. 

Dimensions:  9.2mm dia. x 3.9mm high.    

 *** minimum order 10 pads ***