Studs - Hex Flange Description AMK Finish OEM Part # Origin AMK Part # CLICK FOR PRICING 1/4-20 X 1.0 & .75 HX FLNG STUD 7/16 AF .52 D. 4 pk Mechanical Zinc (OHG) 6035968AA (Chry) B-11053 5/16-18 X .85 & .61 GR5 HX FLNG STUD PHOS. 4 pk Phosphate & Oil (LMY) 391079-S2 B-11054 5/16-18 X 2.0 & .81 GR5 HX FLNG STUD PHOS. 1 pk Phosphate & Oil (BGS) 388552-S2, 384039-S2 (sim) B-12621 5/16-18 X 2.25 & .69 GR5 HX FLNG STUD PHOS. 1 pk Phosphate & Oil (KVU) 388551-S2 (sim) B-12622 5/16-18 X 2.50 & .69 GR5 HX FLNG STUD ZDC. 1 pk Zinc & Yellow (BGT) 390681-S36 B-12623 3/8-16 X 1.89 X 5/16-18 X .56 HX FLNG STUD. 1 pk Phosphate & Oil (MSL) 14103124 B-15557 3/8-16 X 5.12 & 1.06 GR5 HX FLNG STUD PHOS. 1 pk Phosphate & Oil (LVE) 391459-S2 B-11056