Check the listing for details. Wurlitzer Wing Head Screw SAE 10-32 - 2 each - thread = 0.75 inch. Condition: Used. Listed at 8.00 USD. Please use the Shopping Cart to group your items together so you can make one payment and pay one shipping charge. Thank You. I have decided to re-write my "special fastener" listings to make them more searchable with regards to SAE thread size, type of use, and when know it, the Wurlitzer part number. Most listings will begin with the word "Wurlitzer" regardless if they might be used in other makers machines. All of them will mention the SAE thread size in the title. SAE stands for Society of Automotive Engineers.Here is what I can say about the fastener offered in this listing: I do not know of a specified use for these wing head screws.The thread size is 10-32 and thread length is about 0.75 inch.This listings is for two thumb screws as seen in the photos. These are usually too short to use with stepper clamps on models 2700 through 3300.Those need to be one inch. Powered by SixBit's eCommerce Solution