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    Korloy Thread Mill STMD2L American UN (UNC/UNF) Deep Threading for Hard Materials

    Korloy Thread Mill STMD2L American UN (UNC/UNF) Deep Threading for Hard Materials

    Solid carbide two-tooth left-hand thread mill for deep internal American UN threads (UNC, UNF) in hard materials, to ANSI B1.1.74, tolerance class 2B.

    Key features

    • Two cutting teeth: partial-profile roughing tooth followed by full-profile finishing tooth
    • Left-handed tool, run with M04
    • Thread length 2 x or 3 x thread diameter
    • Grade PC9070M

    Specifications

    Thread standard ANSI B1.1.74
    Tolerance class 2B
    Application Internal
    Material Solid carbide
    STMD2L06016L050-I56UN Thread (UNC): No.2-56 | Thread (UNF): No.3-56 | Pitch (tpi): 56 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 1.65 | Overall length L (mm): 76 | Thread length ℓ (mm): 5.45 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 1.80 | Grade: PC9070M
    STMD2L06019L060-I48UN Thread (UNC): No.3-48 | Thread (UNF): No.4-48 | Pitch (tpi): 48 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 1.90 | Overall length L (mm): 76 | Thread length ℓ (mm): 6.53 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.10 | Grade: PC9070M
    STMD2L06021L060-I40UN Thread (UNC): No.4-40, No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.10 | Overall length L (mm): 76 | Thread length ℓ (mm): 6.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.35 | Grade: PC9070M
    STMD2L06024L072-I40UN Thread (UNC): No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.45 | Overall length L (mm): 76 | Thread length ℓ (mm): 7.84 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.65 | Grade: PC9070M
    STMD2L06033L087-I36UN Thread (UNF): No.8-36 | Pitch (tpi): 36 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.30 | Overall length L (mm): 76 | Thread length ℓ (mm): 9.41 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.55 | Grade: PC9070M
    STMD2L06025L074-I32UN Thread (UNC): No.6-32, No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.55 | Overall length L (mm): 76 | Thread length ℓ (mm): 8.20 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.85 | Grade: PC9070M
    STMD2L06032L100-I32UN Thread (UNC): No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.20 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.50 | Grade: PC9070M
    STMD2L06037L100-I32UN Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.70 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.80 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 4.17 | Grade: PC9070M
    STMD2L06052L132-I28UN Thread (UNF): 1/4"x28 | Pitch (tpi): 28 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 5.25 | Overall length L (mm): 76 | Thread length ℓ (mm): 14.11 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.55 | Grade: PC9070M
    STMD2L06035L102-I24UN Thread (UNC): No.10-24 | Thread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.58 | Overall length L (mm): 76 | Thread length ℓ (mm): 11.26 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.90 | Grade: PC9070M
    STMD2L08066L165-I24UN Thread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.68 | Overall length L (mm): 80 | Thread length ℓ (mm): 17.56 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 7.00 | Grade: PC9070M
    STMD2L06048L134-I20UN Thread (UNC): 1/4"-20 | Thread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 4.88 | Overall length L (mm): 76 | Thread length ℓ (mm): 14.67 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.20 | Grade: PC9070M
    STMD2L10095L230-I20UN Thread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.55 | Overall length L (mm): 101 | Thread length ℓ (mm): 24.27 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.90 | Grade: PC9070M
    STMD2L08061L160-I18UN Thread (UNC): 5/16"x18 | Pitch (tpi): 18 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.15 | Overall length L (mm): 80 | Thread length ℓ (mm): 18.17 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 6.50 | Grade: PC9070M
    STMD2L08076L197-I16UN Thread (UNC): 3/8"x16 | Pitch (tpi): 16 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 7.65 | Overall length L (mm): 80 | Thread length ℓ (mm): 21.29 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 8.00 | Grade: PC9070M
    STMD2L10090L233-I14UN Thread (UNC): 7/16"x14 | Pitch (tpi): 14 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.00 | Overall length L (mm): 101 | Thread length ℓ (mm): 25.11 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.50 | Grade: PC9070M
    STMD2L10099L256-I13UN Thread (UNC): 1/2"x13 | Pitch (tpi): 13 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.90 | Overall length L (mm): 101 | Thread length ℓ (mm): 27.55 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 10.90 | Grade: PC9070M
    STMD2L06021L090-I40UN Thread (UNC): No.4-40, No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.10 | Overall length L (mm): 76 | Thread length ℓ (mm): 9.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.35 | Grade: PC9070M
    STMD2L06024L100-I40UN Thread (UNC): No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.45 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.65 | Grade: PC9070M
    STMD2L06025L110-I32UN Thread (UNC): No.6-32, No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.55 | Overall length L (mm): 76 | Thread length ℓ (mm): 11.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.85 | Grade: PC9070M
    STMD2L06032L130-I32UN Thread (UNC): No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.20 | Overall length L (mm): 76 | Thread length ℓ (mm): 13.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.50 | Grade: PC9070M
    STMD2L06052L196-I28UN Thread (UNF): 1/4"x28 | Pitch (tpi): 28 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 5.25 | Overall length L (mm): 76 | Thread length ℓ (mm): 20.51 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.55 | Grade: PC9070M
    STMD2L08066L245-I24UN Thread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.68 | Overall length L (mm): 80 | Thread length ℓ (mm): 25.56 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 7.00 | Grade: PC9070M
    STMD2L06048L198-I20UN Thread (UNC): 1/4"x20 | Thread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 4.88 | Overall length L (mm): 76 | Thread length ℓ (mm): 21.07 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.20 | Grade: PC9070M
    STMD2L08061L240-I18UN Thread (UNC): 5/16"x18 | Pitch (tpi): 18 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.15 | Overall length L (mm): 80 | Thread length ℓ (mm): 26.17 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 6.50 | Grade: PC9070M
    STMD2L10090L335-I14UN Thread (UNC): 7/16"x14 | Pitch (tpi): 14 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.00 | Overall length L (mm): 101 | Thread length ℓ (mm): 35.31 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.50 | Grade: PC9070M
    Thread MillsKorloy
    26 product codes available in this family
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    Korloy Thread Mill STMD2L American UN (UNC/UNF) Deep Threading for Hard Materials

    Brand Korloy·Thread Mills

    Available part numbers (26)

    STMD2L06016L050-I56UN, STMD2L06019L060-I48UN, STMD2L06021L060-I40UN, STMD2L06024L072-I40UN, STMD2L06033L087-I36UN, STMD2L06025L074-I32UN, STMD2L06032L100-I32UN, STMD2L06037L100-I32UN, STMD2L06052L132-I28UN, STMD2L06035L102-I24UN + 16 more — see full table ↓

    How to order

    Send the Korloy part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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    Product codes & specifications
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    Product codeSpec
    STMD2L06016L050-I56UNThread (UNC): No.2-56 | Thread (UNF): No.3-56 | Pitch (tpi): 56 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 1.65 | Overall length L (mm): 76 | Thread length ℓ (mm): 5.45 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 1.80 | Grade: PC9070M
    STMD2L06019L060-I48UNThread (UNC): No.3-48 | Thread (UNF): No.4-48 | Pitch (tpi): 48 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 1.90 | Overall length L (mm): 76 | Thread length ℓ (mm): 6.53 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.10 | Grade: PC9070M
    STMD2L06021L060-I40UNThread (UNC): No.4-40, No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.10 | Overall length L (mm): 76 | Thread length ℓ (mm): 6.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.35 | Grade: PC9070M
    STMD2L06024L072-I40UNThread (UNC): No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.45 | Overall length L (mm): 76 | Thread length ℓ (mm): 7.84 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.65 | Grade: PC9070M
    STMD2L06033L087-I36UNThread (UNF): No.8-36 | Pitch (tpi): 36 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.30 | Overall length L (mm): 76 | Thread length ℓ (mm): 9.41 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.55 | Grade: PC9070M
    STMD2L06025L074-I32UNThread (UNC): No.6-32, No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.55 | Overall length L (mm): 76 | Thread length ℓ (mm): 8.20 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.85 | Grade: PC9070M
    STMD2L06032L100-I32UNThread (UNC): No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.20 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.50 | Grade: PC9070M
    STMD2L06037L100-I32UNThread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.70 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.80 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 4.17 | Grade: PC9070M
    STMD2L06052L132-I28UNThread (UNF): 1/4"x28 | Pitch (tpi): 28 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 5.25 | Overall length L (mm): 76 | Thread length ℓ (mm): 14.11 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.55 | Grade: PC9070M
    STMD2L06035L102-I24UNThread (UNC): No.10-24 | Thread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.58 | Overall length L (mm): 76 | Thread length ℓ (mm): 11.26 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.90 | Grade: PC9070M
    STMD2L08066L165-I24UNThread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.68 | Overall length L (mm): 80 | Thread length ℓ (mm): 17.56 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 7.00 | Grade: PC9070M
    STMD2L06048L134-I20UNThread (UNC): 1/4"-20 | Thread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 4.88 | Overall length L (mm): 76 | Thread length ℓ (mm): 14.67 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.20 | Grade: PC9070M
    STMD2L10095L230-I20UNThread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.55 | Overall length L (mm): 101 | Thread length ℓ (mm): 24.27 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.90 | Grade: PC9070M
    STMD2L08061L160-I18UNThread (UNC): 5/16"x18 | Pitch (tpi): 18 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.15 | Overall length L (mm): 80 | Thread length ℓ (mm): 18.17 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 6.50 | Grade: PC9070M
    STMD2L08076L197-I16UNThread (UNC): 3/8"x16 | Pitch (tpi): 16 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 7.65 | Overall length L (mm): 80 | Thread length ℓ (mm): 21.29 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 8.00 | Grade: PC9070M
    STMD2L10090L233-I14UNThread (UNC): 7/16"x14 | Pitch (tpi): 14 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.00 | Overall length L (mm): 101 | Thread length ℓ (mm): 25.11 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.50 | Grade: PC9070M
    STMD2L10099L256-I13UNThread (UNC): 1/2"x13 | Pitch (tpi): 13 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.90 | Overall length L (mm): 101 | Thread length ℓ (mm): 27.55 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 10.90 | Grade: PC9070M
    STMD2L06021L090-I40UNThread (UNC): No.4-40, No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.10 | Overall length L (mm): 76 | Thread length ℓ (mm): 9.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.35 | Grade: PC9070M
    STMD2L06024L100-I40UNThread (UNC): No.5-40 | Thread (UNF): No.6-40 | Pitch (tpi): 40 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.45 | Overall length L (mm): 76 | Thread length ℓ (mm): 10.64 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.65 | Grade: PC9070M
    STMD2L06025L110-I32UNThread (UNC): No.6-32, No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 2.55 | Overall length L (mm): 76 | Thread length ℓ (mm): 11.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 2.85 | Grade: PC9070M
    STMD2L06032L130-I32UNThread (UNC): No.8-32 | Thread (UNF): No.10-32 | Pitch (tpi): 32 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 3.20 | Overall length L (mm): 76 | Thread length ℓ (mm): 13.79 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 3.50 | Grade: PC9070M
    STMD2L06052L196-I28UNThread (UNF): 1/4"x28 | Pitch (tpi): 28 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 5.25 | Overall length L (mm): 76 | Thread length ℓ (mm): 20.51 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.55 | Grade: PC9070M
    STMD2L08066L245-I24UNThread (UNF): 5/16"x24 | Pitch (tpi): 24 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.68 | Overall length L (mm): 80 | Thread length ℓ (mm): 25.56 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 7.00 | Grade: PC9070M
    STMD2L06048L198-I20UNThread (UNC): 1/4"x20 | Thread (UNF): 7/16"x20 | Pitch (tpi): 20 | Shank dia. Ød (mm): 6 | Cutting dia. D (mm): 4.88 | Overall length L (mm): 76 | Thread length ℓ (mm): 21.07 | No. of flutes: 5 | Teeth: 2 | Bore dia. (mm): 5.20 | Grade: PC9070M
    STMD2L08061L240-I18UNThread (UNC): 5/16"x18 | Pitch (tpi): 18 | Shank dia. Ød (mm): 8 | Cutting dia. D (mm): 6.15 | Overall length L (mm): 80 | Thread length ℓ (mm): 26.17 | No. of flutes: 4 | Teeth: 2 | Bore dia. (mm): 6.50 | Grade: PC9070M
    STMD2L10090L335-I14UNThread (UNC): 7/16"x14 | Pitch (tpi): 14 | Shank dia. Ød (mm): 10 | Cutting dia. D (mm): 9.00 | Overall length L (mm): 101 | Thread length ℓ (mm): 35.31 | No. of flutes: 6 | Teeth: 2 | Bore dia. (mm): 9.50 | Grade: PC9070M

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