b'SETS & DISPLAYS COMMON DRILLING TERMSCounter or WallT66HDSET540 Piece, see below for sizesStock # 3 Piece, Fractional3 Piece, Metric included (drill bits not shown) Packaging: Plastic Case Packaging: Plastic CaseT80 069980(1) each Taper, Plug, Bottom Tap(1) each Taper, Plug, BottomGeneral Purpose, Bright Finish T80HD 099995SizeStock #SizeStock #ThunderBit, Black & Bronze Oxide 1/420 NC 071600M2 x 0.4 D3 075151 T80HD+099509 1/428 NF 071601M3 x 0.5 D3075152 ThunderBit+ , Black & Bronze Oxide 5/1618 NC 071602M4 x 0.7 D4075153 Sizes Included (1/16 - 1/2 by 64ths) 5/1624 NF 071603M5 x 0.8 D4075154 (24) 1/16 - 7/64 (12) 17/64 - 5/16 3/816 NC 071604M6 x 1.0 D5075155 (60) 1/8 (6) 21/64-23/64 3/824 NF 071605M7 x 1.0 D5075156 (24) 9/64 - 11/64 (12) 3/8 7/1614 NC 071606M8 x 1.25 D5075157 (48)3/16 (6) 25/64-27/64 7/1620 NF 071607M10 x 1.5 D6075158(24) 13/64 - 15/64 (12) 7/16 1/213 NC 071608M12 x 1.75 D6 075159(60) 1/4 (6) 29/64-1/2 1/220 NF 071609M14 x 2 D7075160Axis Lip Relief Angle9/1612 NC 071610M16 x 2 D7075161Counter Display 9/1618 NF 071611M18 x 2.5 D7075162The imaginary straight line which forms the lengthwise center of a drill The relief angle at the outer corner of the lip5/811 NC 071612M20 x 2.5 D7075163Body LipHolds 29 Piece Jobber Length Drill Bits 5/818 NF 071613M24 x 3 D8075164The section of a drill from the shank to the outer edges of the Thecuttingedgeofatwo-flutedrillwhichextendsfromthechisel(drill bits not included) Stock # cutting lips edge to the outer edge3/410 NC 071614Body Clearance Diameter MarginT80X(14-1/4 H x 14 L x 12-3/4 Deep) 090970 3/416 NF 071615The portion of the land that has been cut away so it will not bindThenarrowraisedsurfaceonadrillbodyalongtheflutethat against the walls of the hole stabilizes the drill in the hole7/89 NC 071616 7/8-14 NF 071617 Chip Removal Neck18 NC 071618 The ability of a drill to pull material that has been cut away from theThe section of reduced diameter between the body and the shank 1-12 NF 071619Display Ideapoint,uptheflutesandoutofthehole of a drill(Solid Carbide Burs) Chisel Edge Overall LengthTap & Die Sets Stock # The edge at the end of the web that connects the cutting lips The length from the end of the shank to the outer corners of theChisel Edge Angle cutting lip1 Round Die & ThunderTap069926 The angle between the chisel edge and cutting lip, as viewed fromPointCounter or Wall1/4-20 NC, 5/16-18 NC, 3/8-16 NC,the end of a drill The cone-shaped cutting end of a drill, made from the ends of the Tools not included 7/16-14 NC, 1/2-13 NC, 1/4-28 NF,Cobalt Steel lands and the web5/16-24 NF, 3/8-24 NF, 7/16-20 NF, A heat-resistant steel that produces increased drill life Point AngleHolds a variety of tools on hooks1/2-20 NF, 1/8-27 NPT(tools not included) Stock # Die Stock - 1 Drill Diameter The angle of the cutting surfaces on a drill point, commonly 118Tap Wrench- 1/4-1/2The diameter over the margins of a drill, measured at the point (Dia.) or 135POPR(13 W, 2 H) 090976 069963 Feeds RPM SFM1 Round Die & ThunderTapFeed rates for drilling are determined by the drill diameter, Revolutions Per Minute = X 3.821/4-20 NC, 5/16-18 NC, 3/8-16 NC,Dia.7/16-14 NC, 1/2-13 NC, 4-40 NC, 6-32 NC, machinability of materials and depth of the desired hole. Small SFM8-32 NC, 10-24 NC, 12-24 NC,1/4-28 NF,drills, harder materials and deeper holes require additional Surface Feet Per Minute = RPM X Dia. X .2629 Piece5/16-24 NF, 3/8-24 NF, 7/16-20 NF, considerations in selecting proper feed ratesShankIndex Shown 1/2-20 NF, 10-32 NC, 1/8-27 NPT Flute The part of a drill by which it is held and drivenDie Stock - 1 Groove cut in the body of drills to provide cutting surfaces, permitSizeTap Wrench- 0-1/4, 1/4-1/2removalofchipsandallowcuttingfluidtoreachcuttingsurfaces Measurement reference for diameter size of a drill, expressed as Flute Length either fractional, wire, letter or metricMetal IndexThe distance from the outer edges of the cutting lips to the extremeSpeedSETSBur SetsStock # backoftheflutes The speed of a drill is determined by the rate which the outer Holds Jobber Length Drills BUR 14 SET, 1/4 Cut, 1/4 ShankHelix Angle edge of the tool rotates in relation to the material being cut. In (drills not included) Stock # SA-1, SC-1, SD-1, SE-1, SF-1, SG-1,The angle formed between the leading edge of the land and the general, the SFM is within a range based upon the workpiece13 Piece1/16 - 1/4 by 64ths 090919 SH-1, SL-1, SM-2071485 axis of a drill material, its condition, hardness and depth of the hole. The 15 Piece1/16 - 1/2 by 32nds 090918 BUR 38 SET, 3/8 Cut, 1/4 ShankHigh Speed Steel deeper the hole, the greater tendency for more heat to be21 Piece1/16 - 3/8 by 64ths 090980 SA-3, SC-3, SD-3, SE-3, SF-3,The high quality steel used in drills for most maintenance and generated. Speed reduction is often recommended to minimize 29 Piece1/16 - 1/2 by 64ths 090917 SG-3, SH-1, SL-3, SM-4071487 industrial applications the amount of heat. It is usually best to start drilling at a slower 115 Piece1/16 - 1/2 by 64ths; #1- #60, A-Z 090940 IPM speed and then increase.BUR 12 SET, 1/2 Cut, 1/4 ShankFeed rate in Inches Per Minute = IPR X RPM Split PointSA-5, SC-5, SD-5, SE-5, SF-5,IPR AspecialpointconfigurationthateliminateswalkingsoholesSG-5, SH-5, SL-4, SM-5071488 Inches Per Revolution (Feed) stay on centerLand WebPlastic IndexMiniature Bur Set Stock # Theouterportionofthebodybetweentwoadjacentflutes The central portion of the body that joins the lands. The extreme BUR 18 SET, 1/8 Cut, 1/8 Shank 071486 Land Width endofthewebformsthechiseledgeofatwo-flutedrill INFORMATION GENERAL TOOL Jobber and Mechanics Length Drills SA-43, SC-42, SD-42, SE-41, SF-42,The distance between the leading edge and heel of the land, Web Thickness(drills not included) Stock # SG-43, SH-41, SL-42, SN-42measured at a right angle to the leading edge Thethicknessofthewebatthepoint,unlessotherwisespecified29 Piece (Jobber) 1/16 - 1/2 by 64ths 090997.3029 Piece (Mechanics) 1/16 - 1/2 by 64ths 091000.30 800-942-1501 www.triumphtwistdrill.comwww.triumphtwistdrill.com800-942-150158 59'