Brand: Hammond Item: Thumb screw Includes: Nylon washer Replacement: No Material: Carbon steel Quantity per Pack: 25 Finish: Black oxide Screw Size: #10-32 UNF x 0.625in Head Type: Phillips/slotted combo knurled Hammond thumb screw, #10-32 UNF x 0.625in, Phillips/slotted combo knurled head, carbon steel, black oxide finish. Package of 25. Nylon washer included.