d1 d2 a UNEF High performance machine taps UNEF American unified fine thread 800 1 UNEF, ANSI B-1.1600 B C-R40 HSSPE PM l1 l2 HSSE DIN ~374 P M K P M K Material groups N S H N S H Hole type < 3d < 2,5d Quality of material HSSE HSSE Coating Chamfer B / 4-5P C / 2-3P Norma ~DIN-374 UNEF Ć d1 1''/P P l1 l2 l2R40 l 3 Ć d2 a Tol. 2B 2B INDEX D2-111101 D2-511101 1/4-32 6,350 32 0,794 80 14 8 - 4,5 3,4 5,55 4327 5/16-32 7,938 32 0,794 80 14 8 - 6,0 4,9 7,15 4328 3/8-32 9,525 32 0,794 90 18 8 - 7,0 5,5 8,70 4329 7/16-28 11,112 28 0,907 90 18 10 - 8,0 6,2 10,20 4330 1/2-28 12,700 28 0,907 100 18 10 - 9,0 7,0 11,80 4331 9/16-24 14,288 24 1,058 100 18 11 - 11,0 9,0 13,20 4332 5/8-24 15,875 24 1,058 100 18 11 - 12,0 9,0 14,80 4333 3/4-20 19,050 20 1,270 110 25 13 - 14,0 11,0 17,80 4335 7/8-20 22,225 20 1,270 125 25 13 - 18,0 14,5 20,95 4337 1-20 25,400 20 1,270 140 28 13 - 18,0 14,5 24,15 4339 ISO Vc (m/min) P 5-20 5-20 M 5-10 5-10 K 5-15 5-15 N 5-25 5-25 S - - Example of order Available from stock 72 D2-111101-4327 On request Tap 800 1/4-32 UNEF 2B ~DIN-374 B HSSE