Hex Flange - Locking Description AMK Finish OEM Part # Origin AMK Part # CLICK FOR PRICING 1/4-20 FLNG NUT CENTER LOCK .58 D PHOS. 4 pk Phosphate & Oil (OPG) B-15316 1/4-20 GR5 AUTOMATION FLNG LOCKNUT .29 TK. 6 pk Phosphate & Oil (NG~) 33777-S2 B-12890 1/4-20 TOP-LOK FLNG NUT .82 D CAD. 5 pk .0002" Cadmium & Wax (LIY) 6028053 (Chry) B-13875 5/16-18 SIDE-LOK FLNG NUT .68 D .32 TK PHOS. 3 pk Phosphate & Oil (KKS) 6027518 (Chry) B-11521 5/16-18 SIDE-LOK FLNG NUT .68 D .32 TK CAD. 3 pk .0002" Cadmium & Wax (KKS) B-11697 5/16-18 SIDE-LOK FLNG NUT .68 D .32 TK RED. 3 pk Cad or Zinc & Red (KKS) 6025804 (Chry) B-12895 5/16-18 GR8 AUTOMATION FLNG LOCKNUT .66 D. 8 pk Phosphate & Oil (EC~) 379930-S2 B-10477 5/16-18 GR8 AUTOMATION FLNG LOCKNUT .66 D. 8 pk .0002" Cadmium & Wax (EC~) 379930-S7 B-10478 5/16-18 FLNG NUT PHOS .63 D X .50 TK w NYL. 2 pk Phosphate & Nylon Lock (JAW) 6028699 sim (Chrysler) B-13240 5/16-24 SIDE-LOK FLNG NUT .27 TK CAD. 6 pk .0002 Zinc & Wax (JAY) 377703-S7 (sim) B-12898 3/8-16 FLNG NUT .75 D PHOS w NYLON LOCK. 2 pk Phosphate & Nylon Lock (ORM) B-15317 3/8-16 GR5 AUTOMATION FLNG LOCKNUT .75 D. 6 pk Phosphate & Oil (HN~) 377706-S2, 382802-S2, 9776807 B-10472 3/8-16 GR5 AUTOMATION FLNG LOCKNUT .75 D. 6 pk .0002" Cadmium & Wax (HN~) 377706-S7, 382802-S7 B-12901 3/8-16 GR5 UBS FLNG LOCKNUT .79 D PHOS. 6 pk Phosphate & Oil (YH~) 33771-S2 B-12903 3/8 UBS GR8 FLNG NUT .80 D PHOS & RED. 4 pk Phosphate & Red Dye (KAN) B-15318 3/8-16 GR5 AUTOMATION FLNG LOCKNUT .90 D. 4 pk Phosphate & Oil (HZ~) B-12904 3/8-24 GR5 FLNG LOCKNUT .75 D CAD. 4 pk .0002" Cadmium & Wax (CE~) 378941-S7 B-15319 3/8-24 GR8 AUTOMATION FLNG LOCKNUT .78 D. 4 pk .0002" Cadmium & Wax (AV~) 377704-S7 B-12905 7/16-14 GR5 AUTOMATION FLNG LOCKNUT .76 D. 4 pk .0002" Cadmium & Wax (AX~) 376420-S7 B-10482 7/16-14 GR8 TOP-LOK FLNG NUT .93 D .40 TK. 4 pk .0002" Cadmium & Wax (OYV) B-11388 7/16-14 GR8 HI-HX FLNG LOCKNUT .38 TK CAD. 6 pk .0002" Cadmium & Wax (OG~) B-12907 7/16-14 GR5 AUTOMATION FLNG LOCKNUT .92 D. 4 pk Phosphate & Oil (MYK) 382400-S2 B-10481 7/16-14 GR8 AUTOMATION FLNG LOCKNUT CAD. 4 pk .0002" Cadmium & Wax (LA~) 6262212 (Chrysler) B-12908 7/16-20 GR5 AUTOMATION FLNG LOCKNUT .92 D. 4 pk .0002 Zinc & Wax (BB~) 379244-S7 B-12910 7/16-20 GR5 AUTOMATION FLNG LOCKNUT .92 D. 4 pk Cad or Zinc & Red (BB~) 379244-S100 B-13438 1/2-13 GR8 AUTOMATION FLNG LOCKNUT 1.01 D. 2 pk Phosphate & Oil (BH~) B-15320 1/2-13 GR8 AUTOMATION FLNG LOCKNUT 1.01 D. 2 pk .0002" Cadmium & Wax (BH~) 379696-S7 B-12911 1/2-13 GR8 AUTOMATION FLNG LOCKNUT 1.01 D. 2 pk Phosphate & Red Dye (BH~) B-15321 1/2-20 GR8 AUTOMATION FLNG LOCKNUT 1.02 D. 2 pk .0002" Cadmium & Wax (KAZ) 378290-S7 B-13305 3/4-20 GR8 TOP-LOK FLNG NUT 1.49 D. 1 pk Phosphate & Thread Sealer (MMF) 371518-S (sim), 389546-S100 B-10471