B8 Thread Rolling Attachment Parts PN Symbol # Part Name 200U551 N/A Complete Attachment 8174050 1 Head Body 8179260A 2 #1 Solid Arm (incl. bearing) 8179270A 3 #2 Solid Arm (incl. bearing) 8199960A 4 #1 Geared Arm (incl. spacer & bearing) 8199970A 5 #2 Geared Arm (incl. spacer & bearing) 8168640 6 Arm Clamping Nut 81X8XX0 7 Roll Pin - carbide / bronze 8174450 8 Cover Plate 8168550 9 Matching Adj. Screw 8168560 10 Compensator Spring 8168540 11 Compensator Block 8172030 12 Drive Gear 8168520 13 Intermediate Gear 8168530 14 Gear Stud 8172040 15 Arm Pivot Shaft 8168510 16 Large Idler Gear 8168580 17 Idler Gear Bearing 8174030 18 #1 Chip Guard 8174040 19 #2 Chip Guard 8168520 20 Compensator Gear 81XXXX0 21 Thrust Bearing (anti-friction) / (carbide)--optional 8414800 22 Locking Screw 8180470 23 Spanner Wrench item-1561 24 Hex Wrenches (each) 8416030 25 Arm Adjusting Screw 9544670 26 Arm Locking Screw 8179230 27 Bronze Thrust Bushing 8199981 28A #1 Roll Gap Spacer -- 1 notch 8199982 28B #2 Roll Gap Spacer -- 2 notches 001U107 N/A Micrometer Setting Gage 8197340 N/A Max. Modified Solid Arm #1 8197350 N/A Max. Modified Solid Arm #2 item-1570 N/A Thread Rolling Attach. Handbook item-1571 N/A Adapters
