The First Photo shows all of the hardware items the buyer will receive, followed by close up photos which shows all of the surfaces. 

 The AJAX motor Is Not included!

All of the parts are for #4 screw size diameter, which was common on many early 1900 small electric DC Motors such as Little Hustler, AJAX, Albert, Knapp, Kendrick & Davis (K & D), Weedon, H-K, Knapp-Leader, Meccano to mention a few. This 10 piece kit is for all of the battery electrical connections only. 

The original knurled 4-40 nuts are hard to fine, which were originally nickel plated. The pass-thru black insulators are 1/4" OD....and the 2 slotted steel 0.750" machine screws are 4-40 as are the brass 1/4" 4-40 Hex nuts. The suffix number '40' means the number of threads per inch. The Thumb nuts have a 0.385" dia. at the top, while the bottom base has a o.310" Dia. The thumb nuts are nickel plated solid brass.

WE SHIP ONLY WITHIN THE 50 STATES OF THE USA !