Threading Technology – Clamping Technology 520

24 Machine Taps HSS Extra UNC UNF UNEF UN-8 M MF NPSF Rp (BSPP) G NPT NPTF Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder Ordering Example: BU50C343.5007 new new new new DIN Length · ANSI Shank Overall length acc. to DIN 371, DIN 376 l 1 ø d 1 l 2 ø d 2 l 3 Reinforced Shank (No.1 - 3 / 8 ) ø d 2 ø d 1 l 2 l 1 Reduced Shank ( 7 / 16 - 2) VA Stainless Steel Materials AL Aluminum Wrought Alloys UNC P 60° Unified Coarse Thread ASME B1.1 Class of Fit Oversize 2B 2B 3B Coating GLT-1 GLT-8 GLT-8 GLT-8 Cutting Material HSS Extra HSS Extra HSS Extra HSS Extra Technical Characteristics R35 R45 R45 C / 2-3 B / approx. 3 C / 2-3 C / 2-3 E / O / P E / O E / O E / O Thread Depth max. 2.5 x d 1 max. 3 x d 1 max. 2.5 x d 1 and Hole Shape Applications – Material P 1 .1- 4 .1 M 1 .1- 3 .1 K 2 .1 N 1 .1-4 N 1 .1-4 N 1 .1-4 Reinforced Shank Tool Identification BU50C344 BU20S800 BU50S800 BU50S810 Dimens. ID Enorm 1-VA GLT-1 Flutes Rekord 1B-AL GLT-8 Flutes Enorm 1-AL GLT-8 Flutes Enorm 1-AL GLT-8 Flutes Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 No. 1 64 1.772 0.276 0.472 0.141 0.110 0.0595 .5000 No. 2 56 1.772 0.276 0.472 0.141 0.110 0.0700 .5001 2 2 2 No. 3 48 1.969 0.354 0.551 0.141 0.110 0.0820 .5002 No. 4 40 2.205 0.433 0.709 0.141 0.110 0.0890 .5003 2 2 2 No. 5 40 2.205 0.433 0.709 0.141 0.110 0.1015 .5004 No. 6 32 2.205 0.472 0.787 0.141 0.110 0.1110 .5005 2 2 2 No. 8 32 2.480 0.512 0.827 0.168 0.131 0.1360 .5006 2 2 2 No. 10 24 2.756 0.591 0.984 0.194 0.152 0.1520 .5007 1) (+.0035) 3 2 2 2 No. 12 24 3.150 0.630 1.142 0.220 0.165 0.1770 .5008 1 / 4 20 3.150 0.669 1.181 0.255 0.191 0.2040 .5009 (+.0050) 3 2 2 2 5 / 16 18 3.543 0.787 1.378 0.318 0.238 0.2610 .5010 (+.0050) 3 2 2 2 3 / 8 16 3.937 0.866 1.535 0.381 0.286 0.3160 .5011 (+.0050) 3 2 2 2 Reduced Shank Tool Identification CU50C344 CU20S800 CU50S800 CU50S810 Dimens. ID Enorm 2-VA GLT-1 Flutes Rekord 2B-AL GLT-8 Flutes Enorm 2-AL GLT-8 Flutes Enorm 2-AL GLT-8 Flutes Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 7 / 16 14 3.937 0.866 — 0.323 0.242 0.3680 .5012 (+.0050) 3 3 3 3 1 / 2 13 4.331 0.984 — 0.367 0.275 0.4219 .5013 (+.0050) 3 3 3 3 9 / 16 12 4.331 1.024 — 0.429 0.322 0.4844 .5014 5 / 8 11 4.331 1.063 — 0.480 0.360 0.5313 .5015 (+.0050) 3 3 3 3 3 / 4 10 4.921 1.181 — 0.590 0.442 0.6563 .5016 (+.0050) 3 3 3 3 7 / 8 9 5.512 1.260 — 0.697 0.523 0.7656 .5017 1 8 6.299 1.417 — 0.800 0.600 0.8750 .5018 1 1 / 8 7 7.087 1.575 — 0.896 0.672 0.9843 .5019 1 1 / 4 7 7.087 1.575 — 1.021 0.766 1.1094 .5020 1 3 / 8 6 7.874 1.969 — 1.108 0.831 1.2205 .5021 1 1 / 2 6 7.874 1.969 — 1.233 0.925 1.3386 .5022 1 3 / 4 5 8.661 2.283 — 1.430 1.072 1.5551 .5023 2 4 1 / 2 9.843 2.559 — 1.644 1.233 1.7812 .5024 1) Tool Identification = BU50C343