Bolts pack of 100.
 
These bolts are mainly used for types of Storm Panel track that do not have fixed bolts (known as studless track). These bolts slide in the groove to the desired position and are secured with wing nuts.
 
These are 1/4" wide, with 20 screw threads per inch 
and 1 inch long = 1/4-20 x 1" Bolt.