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HomeProductMTHR quick change threading tiny boring cutter
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MTHR quick change threading tiny boring cutter

MTHR Quick Change Threading Tiny Boring Cutter is designed for precise internal threading and micro-boring in small-diameter bores. Its quick-change system reduces downtime, improving efficiency in high-volume CNC operations. Made from premium micro-grain carbide, the cutter provides hardness, wear resistance, and stable cutting performance. Optimized threading geometry ensures clean thread profiles and smooth finishes on stainless steel, titanium alloys, and hardened metals. Customizable features—including shank size, tool length, threading geometry, and coatings—allow adaptation to aerospace, automotive, medical, and electronics applications, delivering reliable precision and long tool life.
Product Details Parameter Coating
Product Type Min.Dia(mm)ΦA ФD w r h L1 L2 F S θ PitcPitch Range (mm) Type JS25 AL25
MTHR0415L04A60-D- (C) 1.5 4 0.03 / 0.25 29 4 1.4 0.4 60° P0.25~P0.4 II
MTHR0420L06A60-D- (C) 2.0 4 0.04 / 0.305 31 6 1.9 0.5 60° P0.3~P0.5 II
MTHR0425L08A60-D- (C) 2.5 4 0.06 / 0.375 33 8 2.4 0.6 60° P0.4~P0.6 II
MTHR0430L10A60-D- (C) 3.0 4 / 0.05 0.605 35 10 2.9 1.0 60° P0.5~P0.8 I
MTHR0441L12A60X-D- (C) 4.1 4 / 0.05 0.72 37 12 3.9 1.2 60° P0.5~P1.0 I
MTHR0441L12A60-D- (C) 4.1 4 / 0.10 0.75 37 12 3.9 1.2 60° P1.0~P1.5 I
MTHR0551L15A60X-D- (C) 5.1 5 / 0.05 0.895 40 15 4.9 1.5 60° P0.5~P1.0 I
MTHR0551L15A60-D- (C) 5.1 5 / 0.10 0.925 40 15 4.9 1.5 60° P1.0~P1.5 I
MTHR0661L20A60X-D- (C) 6.1 6 / 0.05 1.07 45 20 5.9 1.8 60° P0.5~P1.0 I
MTHR0661L20A60-D- (C) 6.1 6 / 0.10 1.095 45 20 5.9 1.8 60° P1.0~P1.75 I
Coated Item Color Application Performance parameter
AT12 Gold
Universal use for ≤HRC45 material; Stainless(austenitic&Martensite,303,304,316F...); Steel(Bearing steel,quenched steel,Cr-Mo stee, Mn steel...); Koveralloy; Superalloy;Copper; Iron castingPig iron;Nickel alloy,PMMA... Nano Hardness:HV3500 Friction Coefficient: 0.3 Max.Temp:900°
JS25 Bronze
Universal use for ≤HRC60 material;Stainless(austenitic&Martensite,316L 303,304,321,316F,High Nickel Stainless...); Steel(Bearing steel,quenched steel,Cr-Mo stee,Mn steel...); Koveralloy; Superalloy;Copper; Iron castingPig iron;Nickel alloy.. Nano Hardness:HV4500, Friction Coefficient: 0.4 Max.Temp:1100°
AL25 Blue Grey
Special use for mild material ;Especial for Pure iron , special for mild steel & mild stainless,like 304. Nano Hardness:HV3500, Friction Coefficient: 0.25 Max.Temp:800°
AD12 Black
Special use for viscous Material:;Aluminium,PMMA,Polyethylene.CFRP. Nano Hardness:HV2200, Friction Coefficient: 0.2Max.Temp:400°
TZ25 Champagne Gold
Special use for titanium alloy. Nano Hardness:HV4000Friction Coefficient: 0.55 Max.Temp:900°
AT25 Black
Carbon Steel,alloy steel,Bearing steel,quenched steel,Cr-Mo stee,Mn steel...; Nano Hardness:HV3500, Friction Coefficient: 0.6 Max.Temp:900°
LC25 Rainbow
Special use for viscous Material:; Aluminium,PMMA,Polyethylene.CFRP. Nano Hardness:HV5000 Friction Coefficient: 0.05 Max.Temp:450°