Machine Screws - Flat Head Description AMK Finish OEM Part # Origin AMK Part # CLICK FOR PRICING 8-32 X 1/2 PH FLAT MS PHOS. 6 pk Phosphate & Oil (Z~~) 50012-S2 B-12291 10-24 X 1/2 PH FLAT MS SS. 6 pk 100% Stainless Steel (LWZ) 9418712 B-10387 12-24 X 1/2 PH FLAT EXT SEMS ZC. 6 pk .0002 Zinc & Wax (FD~) 356782-S8, 445638 B-12292 5/16-18 X 3/4 PH FLAT EXT SEMS PHOS. 4 pk Phosphate & Oil (KET) 379630-S2, 9419306 B-12295 5/16-18 X 3/4 PH FLAT EXT SEMS ZC. 4 pk .0002 Zinc & Wax (KET) 451269, 379630-S8 B-12296 5/16-18 X 3/4 SERRATED PH FLAT ZC. 6 pk .0002 Zinc & Wax (PRA) 9412177 B-15021 5/16-18 X 3/4 POZI FLAT MS ZC. 4 pk .0002 Zinc & Wax (KIA) 378428-S8 (sim), 4439627 (sim) B-13685 5/16-18 X 1 1/4 PH FL EXT SEMS PHOS. 3 pk Phosphate & Oil (LRF) 7667647 (pozi) B-10040 5/16-18 X 1.50 POZI FLAT MS .50 D NYLON STRIP. 6 pk Zinc & Nylon Lock (LPR) 4848760 B-10397