Assorted Grub Screws Black - UNF - 3/16, 1/4 ,5/16,3/8 QTY 225. Grub Screws - UNF - Box of- 225 Pieces. Grub Screws UNF- Black DIN 916. 3 x 3/16 UNF: x 3/16, 1/4, 3/8. 3 x 1/4 UNF: x 1/4, 5/16, 7/16. 2 x 5/16 UNF: x 5/16, 3/8.
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