Machine Screws - 12 Point Head Description AMK Finish OEM Part # Origin AMK Part # CLICK FOR PRICING 5/16-18 X 7/8 12 PT .75 CONI SEMS DSB. 6 pk 100 hours Salt Spray Black (KRI) 3979949 B-11917 5/16-18 X 1 1/2 GR8 12PT FLNG BOLT PHOS. 4 pk Phosphate & Oil (LWQ) 390214-S2 B-10098 3/8-16 X 1.25 GR5 12 PT FLNG BOLT ZC. 2 pk .0002 Zinc & Wax (PIA) 539485 B-13948 3/8-24 X 1 3/16 GR8 12 PT FLNG BOLT PHOS. 1 pk Phosphate & Oil (II~) 358794-S, 5686553, 7807271 (sim) B-12734 3/8-24 X 1 3/16 GR8 FLNG BOLT 12PT PHOS w RED. 1 pk Phosphate & Red Dye (II~) 385970-S100 B-11504 1/2-13 X 1 1/2 FLNG BOLT 12PT PLAIN w NYL. 1 pk Plain Finish & Nylon Lock (PPN) 9427314 B-15013