B18 Thread Rolling Attachment Parts PN Symbol # Part Name 200U554 N/A Complete Attachment 8200160 1 Head Body 8177600A 2 #1 Solid Arm (incl. bearing) 8177590A 3 #2 Solid Arm (incl. bearing) 8199930A 4 #1 Geared Arm (incl. spacer & bearing) 8199940A 5 #2 Geared Arm (incl. spacer & bearing) 8164780 6 Arm Clamping Nut 81XXXX0 7 Roll Pin - carbide / bronze 8165160 8 Cover Plate 8165020 9 Matching Adj. Screw 8172080 10 Compensator Spring 8164960 11 Compensator Block 8164940 12 Drive Gear 8164950 13 Intermediate Gear 8164910 14 Gear Stud 8164890 15 Arm Pivot Shaft 8164930 16 Large Idler Gear 8165060 17 Idler Gear Bearing 8165030 18 #1 Chip Guard 8165040 19 #2 Chip Guard 8164950 20 Compensator Gear 8XXXXXX 21 Thrust Bearing (anti-friction) / (carbide)--optional 9094453 22 Locking Screw 8025501 23 Spanner Wrench item-1672 24 Hex Wrenches (each) 8416050 25 Arm Adjusting Screw 8416052 26 Arm Locking Screw 8178860 27 Bronze Thrust Bushing 8199951 28A #1 Roll Gap Spacer -- 1 notch 8199952 28B #2 Roll Gap Spacer -- 2 notches 001U60 N/A Micrometer Setting Gage 8191580 N/A Max. Modified Solid Arm #1 8191590 N/A Max. Modified Solid Arm #2 item-1681 N/A Thread Rolling Attach. Handbook item-1682 N/A Adapters