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EX-POT Spiral Pointed Tap
OSG Threading

EX-POT Spiral Pointed Tap

Workpiece material (ISO)
P · SteelN · Non-ferrous

HSSE spiral pointed tap for through-hole tapping in carbon steel, alloy steel, and non-ferrous metals — the spiral point pushes chips forward through the hole, ahead of the tap. Offered in Metric (M), Unified (U/UNC), and Whitworth (W) thread types, plus a left-hand (LH) variant.

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Features & uses

Engineered for performance

1

Through-hole spiral point

The spiral-point flute pushes chips forward through the hole ahead of the tap, avoiding the chip-packing common to through-hole tapping.

2

Broad material coverage

Rated for carbon steel, alloy steel, and non-ferrous metals (copper, brass, aluminium, zinc die-cast, engineering plastic) with continuous coil-form chips.

3

HSSE substrate

Made from HSSE (cobalt-alloyed high-speed steel) for added heat and wear resistance.

4

Multiple thread standards

Offered in Metric (M), Unified (U/UNC), and Whitworth (W) thread types, including a left-hand (LH) variant.

Workpiece material

Material applicability

P

Steel

  • Low carbon steel C ≤ 0.25%
    Not marked
  • Medium carbon steel C 0.25%–0.45%
    ○ Suitable

    Catalogue mark: ○

  • High carbon steel C > 0.45%
    ○ Suitable

    Catalogue mark: ○

  • Alloy steel SCM
    ○ Suitable

    Catalogue mark: ○

  • Cast steel SC
    Not marked
K

Cast iron

  • Cast iron FC
    Not marked
  • Ductile cast iron FCD
    ○ Suitable

    Catalogue mark: ○

N

Non-ferrous

  • Copper Cu
    ○ Suitable

    Catalogue mark: ○

  • Brass Bs
    ○ Suitable

    Catalogue mark: ○

  • Brass casting BsC
    ○ Suitable

    Catalogue mark: ○

  • Bronze PB
    ○ Suitable

    Catalogue mark: ○

  • Aluminum rolled AL
    ◎ Best fit

    Catalogue mark: ◎

  • Aluminum alloy casting AC,ADC
    ○ Suitable

    Catalogue mark: ○

  • Magnesium alloy casting MC
    ○ Suitable

    Catalogue mark: ○

  • Zinc alloy casting ZDC
    ○ Suitable

    Catalogue mark: ○

Source: Catalogue · OSG 2025-26 Work Material chart, visually reviewed for EX-POT. · OSG 2025-26 catalogue Work Material chart

Specifications

Sizes & part numbers

ORDER NO.SIZEGRADEFLUTE LOALSHANKCOATING
16006 M1 × 0.25 · STD OH1 6 30 3 HSSE
16007 M1.1 × 0.25 · STD OH1 8 32 3 HSSE
16008 M1.2 × 0.25 · STD OH1 8 32 3 HSSE
16010 M1.2 × 0.25 · STD OH1 8 32 3 HSSE
16011 M1.4 × 0.3 · STD+1 OH2 9 34 3 HSSE
16012 M1.4 × 0.3 · STD+2 OH3 9 34 3 HSSE
16014 M1.6 × 0.35 · STD OH1 10 36 3 HSSE
16015 M1.6 × 0.35 · STD+1 OH2 10 36 3 HSSE
16016 M1.6 × 0.35 · STD+2 OH3 10 36 3 HSSE
16019 M1.7 × 0.35 · STD OH1 11 36 3 HSSE
16020 M1.7 × 0.35 · STD+1 OH2 11 36 3 HSSE
16021 M1.7 × 0.35 · STD+2 OH3 11 36 3 HSSE
16022 M1.7 × 0.35 · STD+3 OH4 11 36 3 HSSE
16024 M1.8 × 0.35 · STD OH2 11 36 3 HSSE
16031 M1.8 × 0.35 · STD OH1 11 36 3 HSSE
16032 M2 × 0.4 · STD+1 OH2 12 40 3 HSSE
16033 M2 × 0.4 · STD+2 OH3 12 40 3 HSSE
16034 M2 × 0.4 · STD+3 OH4 12 40 3 HSSE
16038 M2 × 0.25 · STD OH1 12 40 3 HSSE
16042 M2.2 × 0.45 · STD OH2 13 42 3 HSSE
16043 M2.2 × 0.45 · STD OH1 13 42 3 HSSE
16044 M2.3 × 0.4 · STD+1 OH2 13 42 3 HSSE
16045 M2.3 × 0.4 · STD+2 OH3 13 42 3 HSSE
16046 M2.3 × 0.4 · STD+3 OH4 13 42 3 HSSE
16053 M2.5 × 0.45 · STD OH2 14 44 3 HSSE
16054 M2.5 × 0.45 · STD+1 OH3 14 44 3 HSSE
16055 M2.5 × 0.45 · STD+2 OH4 14 44 3 HSSE
16056 M2.5 × 0.35 · STD+2 OH4 14 44 3 HSSE
16059 M2.5 × 0.35 · STD OH2 14 44 3 HSSE
16060 M2.6 × 0.45 · STD+1 OH3 14 44 3 HSSE
16061 M2.6 × 0.45 · STD+2 OH4 14 44 3 HSSE
16062 M2.6 × 0.35 · STD+2 OH4 14 44 3 HSSE
16065 M2.6 × 0.35 · STD OH2 14 44 3 HSSE
16066 M3 × 0.6 · STD+1 OH3 11 46 4 HSSE
15368 M3 × 0.5 · STD OH2 11 46 4 HSSE
16069 M3 × 0.5 · STD+1 OH3 11 46 4 HSSE
17942 M3 × 0.5 · STD+2 OH4 11 46 4 HSSE
16071 M3 × 0.35 · STD+2 OH4 11 46 4 HSSE
16074 M3 × 0.35 · STD OH2 11 46 4 HSSE
16570 M3 × 0.5-L · STD OH2 11 46 4 HSSE
16075 M3.5 × 0.6 · STD+1 OH3 13 48 4 HSSE
16081 M3.5 × 0.35 · STD+1 OH3 13 48 4 HSSE
16083 M3.5 × 0.35 · STD OH2 13 48 4 HSSE
16084 M4 × 0.75 · STD+1 OH3 13 52 5 HSSE
15386 M4 × 0.7 · STD OH2 13 52 5 HSSE
16087 M4 × 0.7 · STD+1 OH3 13 52 5 HSSE
17946 M4 × 0.7 · STD+2 OH4 13 52 5 HSSE
16089 M4 × 0.5 · STD+2 OH4 13 52 5 HSSE
16574 M4 × 0.7-L · STD OH2 13 52 5 HSSE
16092 M4.5 × 0.75 · STD OH2 13 55 5 HSSE
16098 M4.5 × 0.75 · STD OH2 13 55 5 HSSE
16099 M5 × 0.9 · STD+1 OH3 16 60 5.5 HSSE
15401 M5 × 0.8 · STD OH2 16 60 5.5 HSSE
16102 M5 × 0.8 · STD+1 OH3 16 60 5.5 HSSE
17950 M5 × 0.8 · STD+2 OH4 16 60 5.5 HSSE
16103 M5 × 0.75 · STD+2 OH4 16 60 5.5 HSSE
16105 M5 × 0.5 · STD OH2 16 60 5.5 HSSE
16578 M5 × 0.8-L · STD OH2 16 60 5.5 HSSE
16108 M5.5 × 0.9 · STD OH2 17 60 5.5 HSSE
16110 M5.5 × 0.5 · STD OH2 17 60 5.5 HSSE
15413 M6 × 1 · STD OH2 19 62 6 HSSE
16114 M6 × 1 · STD+1 OH3 19 62 6 HSSE
17954 M6 × 1 · STD+2 OH4 19 62 6 HSSE
16116 M6 × 0.75 · STD OH2 19 62 6 HSSE
16117 M6 × 0.75 · STD+1 OH3 19 62 6 HSSE
16120 M6 × 0.5 · STD OH2 19 62 6 HSSE
16582 M6 × 1-L · STD OH2 19 62 6 HSSE
16122 M7 × 1 · STD OH2 19 65 6.2 HSSE
16127 M7 × 0.75 · STD OH2 19 65 6.2 HSSE
16129 M7 × 0.5 · STD OH2 19 65 6.2 HSSE
15431 M8 × 1.25 · STD OH3 22 70 6.2 HSSE
16132 M8 × 1.25 · STD+1 OH4 22 70 6.2 HSSE
17958 M8 × 1.25 · STD+2 OH5 22 70 6.2 HSSE
16134 M8 × 1 · STD OH2 22 70 6.2 HSSE
16135 M8 × 1 · STD+1 OH3 22 70 6.2 HSSE
16137 M8 × 0.75 · STD OH2 22 70 6.2 HSSE
16141 M8 × 0.5 · STD OH2 22 70 6.2 HSSE
16586 M8 × 1.25-L · STD OH3 22 70 6.2 HSSE
16144 M9 × 1.25 · STD OH3 22 72 7 HSSE
16148 M9 × 1 · STD OH2 22 72 7 HSSE
15456 M10 × 1.5 · STD OH3 24 75 7 HSSE
16157 M10 × 1.5 · STD+1 OH4 24 75 7 HSSE
17962 M10 × 1.5 · STD+2 OH5 24 75 7 HSSE
15460 M10 × 1.25 · STD OH3 24 75 7 HSSE
16161 M10 × 1.25 · STD+1 OH4 24 75 7 HSSE
16163 M10 × 1 · STD OH3 24 75 7 HSSE
16164 M10 × 1 · STD+1 OH4 24 75 7 HSSE
16165 M10 × 0.75 · STD OH2 24 75 7 HSSE
16167 M10 × 0.5 · STD OH2 24 75 7 HSSE
16590 M10 × 1.5-L · STD OH3 24 75 7 HSSE
16592 M10 × 1.25-L · STD OH3 24 75 7 HSSE
16169 M11 × 1.5 · STD OH3 25 80 8 HSSE
16172 M11 × 1.25 · STD OH3 25 80 8 HSSE
16174 M11 × 1 · STD OH3 25 80 8 HSSE
16176 M11 × 0.75 · STD OH2 25 80 8 HSSE
15480 M12 × 1.75 · STD OH4 29 82 8.5 HSSE
16181 M12 × 1.75 · STD+1 OH5 29 82 8.5 HSSE
17968 M12 × 1.75 · STD+2 OH6 29 82 8.5 HSSE
15483 M12 × 1.5 · STD OH3 29 82 8.5 HSSE
16184 M12 × 1.5 · STD+1 OH4 29 82 8.5 HSSE
15488 M12 × 1.25 · STD OH4 29 82 8.5 HSSE
16189 M12 × 1.25 · STD+1 OH5 29 82 8.5 HSSE
16191 M12 × 1 · STD OH3 29 82 8.5 HSSE
16192 M12 × 1 · STD+1 OH4 29 82 8.5 HSSE
16193 M12 × 0.75 · STD OH2 29 82 8.5 HSSE
16194 M12 × 0.5 · STD OH2 29 82 8.5 HSSE
16596 M12 × 1.75-L · STD OH4 29 82 8.5 HSSE
16598 M12 × 1.5-L · STD OH3 29 82 8.5 HSSE
16600 M12 × 1.25-L · STD OH4 29 82 8.5 HSSE
16195 M13 × 1.75 · STD OH3 30 88 9.5 HSSE
16199 M13 × 1.5 · STD OH3 30 88 9.5 HSSE
16203 M13 × 1 · STD OH2 30 88 9.5 HSSE
15509 M14 × 2 · STD OH4 30 88 10.5 HSSE
16210 M14 × 2 · STD+1 OH5 30 88 10.5 HSSE
15512 M14 × 1.5 · STD OH3 30 88 10.5 HSSE
16213 M14 × 1.5 · STD+1 OH4 30 88 10.5 HSSE
16216 M14 × 1.25 · STD OH3 30 88 10.5 HSSE
16220 M14 × 1 · STD OH3 30 88 10.5 HSSE
16604 M14 × 2-L · STD OH4 30 88 10.5 HSSE
16606 M14 × 1.5-L · STD OH3 30 88 10.5 HSSE
16232 M15 × 2 · STD OH3 32 95 10.5 HSSE
16236 M15 × 1.5 · STD OH3 32 95 10.5 HSSE
16244 M15 × 1 · STD OH3 32 95 10.5 HSSE
15557 M16 × 2 · STD OH4 32 95 12.5 HSSE
16258 M16 × 2 · STD+1 OH5 32 95 12.5 HSSE
15560 M16 × 1.5 · STD OH3 32 95 12.5 HSSE
16261 M16 × 1.5 · STD+1 OH4 32 95 12.5 HSSE
16268 M16 × 1 · STD OH3 32 95 12.5 HSSE
16610 M16 × 2-L · STD OH4 32 95 12.5 HSSE
16612 M16 × 1.5-L · STD OH3 32 95 12.5 HSSE
16281 M17 × 2 · STD OH4 37 100 13 HSSE
16286 M17 × 1.5 · STD OH3 37 100 13 HSSE
16282 M17 × 1 · STD OH3 37 100 13 HSSE
15593 M18 × 2.5 · STD OH4 37 100 14 HSSE
16294 M18 × 2.5 · STD+1 OH5 37 100 14 HSSE
16297 M18 × 2 · STD OH4 37 100 14 HSSE
15601 M18 × 1.5 · STD OH4 37 100 14 HSSE
16302 M18 × 1.5 · STD+1 OH5 37 100 14 HSSE
16304 M18 × 1 · STD OH3 37 100 14 HSSE
16616 M18 × 2.5-L · STD OH4 37 100 14 HSSE
16618 M18 × 1.5-L · STD OH4 37 100 14 HSSE
16313 M19 × 2.5 · STD OH4 37 105 14 HSSE
16320 M19 × 1.5 · STD OH3 37 105 14 HSSE
16324 M19 × 1 · STD OH2 37 105 14 HSSE
15629 M20 × 2.5 · STD OH4 37 105 15 HSSE
16330 M20 × 2.5 · STD+1 OH5 37 105 15 HSSE
16333 M20 × 2 · STD OH4 37 105 15 HSSE
15637 M20 × 1.5 · STD OH4 37 105 15 HSSE
16338 M20 × 1.5 · STD+1 OH5 37 105 15 HSSE
16341 M20 × 1 · STD OH3 37 105 15 HSSE
16622 M20 × 2.5-L · STD OH4 37 105 15 HSSE
16624 M20 × 1.5-L · STD OH4 37 105 15 HSSE
15645 M22 × 2.5 · STD OH4 38 115 17 HSSE
16346 M22 × 2.5 · STD+1 OH5 38 115 17 HSSE
16349 M22 × 2 · STD OH4 38 115 17 HSSE
15653 M22 × 1.5 · STD OH4 38 115 17 HSSE
16354 M22 × 1.5 · STD+1 OH5 38 115 17 HSSE
16358 M22 × 1 · STD OH2 38 115 17 HSSE
16628 M22 × 2.5-L · STD OH4 38 115 17 HSSE
16630 M22 × 1.5-L · STD OH4 38 115 17 HSSE
16361 M23 × 2.5 · STD OH4 45 120 18 HSSE
16365 M23 × 2 · STD OH4 45 120 18 HSSE
15673 M24 × 3 · STD OH4 45 120 19 HSSE
16374 M24 × 3 · STD+1 OH5 45 120 19 HSSE
16377 M24 × 2 · STD OH4 45 120 19 HSSE
15681 M24 × 1.5 · STD OH4 45 120 19 HSSE
16382 M24 × 1.5 · STD+1 OH5 45 120 19 HSSE
16385 M24 × 1 · STD OH2 45 120 19 HSSE
16634 M24 × 3-L · STD OH4 45 120 19 HSSE
16636 M24 × 1.5-L · STD OH4 45 120 19 HSSE
16389 M25 × 3 · STD OH4 45 130 19 HSSE
16393 M25 × 2 · STD OH4 45 130 19 HSSE
16397 M25 × 1.5 · STD OH4 45 130 19 HSSE
16405 M26 × 3 · STD OH4 45 130 20 HSSE
16407 M26 × 2 · STD OH3 45 130 20 HSSE
16409 M26 × 1.5 · STD OH4 45 130 20 HSSE
16417 M27 × 3 · STD OH4 45 130 20 HSSE
16418 M27 × 3 · STD+1 OH5 45 130 20 HSSE
16421 M27 × 2 · STD OH4 45 130 20 HSSE
16425 M27 × 1.5 · STD OH4 45 130 20 HSSE
16426 M27 × 1.5 · STD+1 OH5 45 130 20 HSSE
16428 M27 × 1 · STD OH2 45 130 20 HSSE
16640 M27 × 3-L · STD OH4 45 130 20 HSSE
16642 M27 × 1.5-L · STD OH4 45 130 20 HSSE
16434 M28 × 3 · STD OH4 48 135 21 HSSE
16437 M28 × 2 · STD OH4 48 135 21 HSSE
16441 M28 × 1.5 · STD OH4 48 135 21 HSSE
16450 M30 × 3.5 · STD OH5 48 135 23 HSSE
16451 M30 × 3.5 · STD+1 OH6 48 135 23 HSSE
16453 M30 × 3 · STD OH4 48 135 23 HSSE
16457 M30 × 2 · STD OH4 48 135 23 HSSE
16461 M30 × 1.5 · STD OH4 48 135 23 HSSE
16462 M30 × 1.5 · STD+1 OH5 48 135 23 HSSE
16465 M30 × 1 · STD OH2 48 135 23 HSSE
16646 M30 × 3.5-L · STD OH5 48 135 23 HSSE
16648 M30 × 1.5-L · STD OH4 48 135 23 HSSE
16467 M32 × 1.5 · STD OH4 37 110 24 HSSE
16478 M33 × 2 · STD OH3 37 110 25 HSSE
16482 M33 × 1.5 · STD OH4 37 110 25 HSSE
16474 M33 × 3.5 · STD OH5 51 145 25 HSSE
16491 M35 × 1.5 · STD OH4 39 110 26 HSSE
16502 M36 × 2 · STD OH3 39 110 28 HSSE
16506 M36 × 1.5 · STD OH4 39 110 28 HSSE
16498 M36 × 4 · STD OH5 57 155 28 HSSE
16500 M36 × 3 · STD OH4 57 155 28 HSSE
16519 M39 × 4 · STD OH5 60 165 30 HSSE
16541 M42 × 2 · STD OH3 39 120 32 HSSE
16544 M42 × 1.5 · STD OH3 39 120 32 HSSE
16534 M42 × 4.5 · STD OH5 60 175 32 HSSE
16538 M42 × 3 · STD OH4 60 175 32 HSSE
16552 M45 × 2 · STD OH3 45 120 35 HSSE
16555 M45 × 1.5 · STD OH3 45 120 35 HSSE
16546 M45 × 4.5 · STD OH5 67 180 35 HSSE
16549 M45 × 3 · STD OH4 67 180 35 HSSE
16564 M48 × 2 · STD OH3 45 125 38 HSSE
16567 M48 × 1.5 · STD OH3 45 125 38 HSSE
16558 M48 × 5 · STD OH5 67 185 38 HSSE
16561 M48 × 3 · STD OH4 67 185 38 HSSE
16891 No.0-80 UNF · STD OH1 10 36 3 HSSE
16894 No.1-64 UNC · STD OH1 11 36 3 HSSE
16897 No.1-72 UNF · STD OH1 11 36 3 HSSE
16900 No.2-56 UNC · STD OH1 13 42 3 HSSE
16903 No.2-64 UNF · STD OH1 13 42 3 HSSE
16906 No.3-48 UNC · STD OH1 14 44 3 HSSE
16909 No.3-56 UNF · STD OH1 14 44 3 HSSE
16912 No.4-40 UNC · STD OH2 15 44 3 HSSE
16915 No.4-48 UNF · STD OH2 15 44 3 HSSE
16918 No.5-40 UNC · STD OH2 11 46 4 HSSE
16921 No.5-44 UNF · STD OH2 11 46 4 HSSE
16924 No.6-32 UNC · STD OH2 13 48 4 HSSE
16927 No.6-40 UNF · STD OH2 13 48 4 HSSE
16930 No.8-32 UNC · STD OH2 13 52 5 HSSE
16933 No.8-36 UNF · STD OH2 13 52 5 HSSE
16936 No.10-24 UNC · STD OH2 16 60 5.5 HSSE
16939 No.10-32 UNF · STD OH2 16 60 5.5 HSSE
16942 No.12-24 UNC · STD OH2 17 60 5.5 HSSE
16945 No.12-28 UNF · STD OH2 17 60 5.5 HSSE
16949 1/4-20 UNC · STD OH3 19 62 6 HSSE
16951 1/4-28 UNF · STD OH2 19 62 6 HSSE
16958 5/16-18 UNC · STD OH3 22 70 6.1 HSSE
16961 5/16-24 UNF · STD OH3 22 70 6.1 HSSE
16967 3/8-16 UNC · STD OH3 24 75 7 HSSE
16973 3/8-24 UNF · STD OH3 24 75 7 HSSE
16980 7/16-14 UNC · STD OH3 25 80 8 HSSE
16983 7/16-20 UNF · STD OH3 25 80 8 HSSE
16990 1/2-13 UNC · STD OH3 29 85 9 HSSE
16996 1/2-20 UNF · STD OH3 29 85 9 HSSE
17005 9/16-12 UNC · STD OH3 30 90 10.5 HSSE
17008 9/16-18 UNF · STD OH3 30 90 10.5 HSSE
17011 5/8-11 UNC · STD OH3 32 95 12 HSSE
17014 5/8-18 UNF · STD OH3 32 95 12 HSSE
17020 3/4-10 UNC · STD OH3 37 105 14 HSSE
17023 3/4-16 UNF · STD OH3 37 105 14 HSSE
17030 7/8-9 UNC · STD OH4 38 115 17 HSSE
17032 7/8-14 UNF · STD OH3 38 115 17 HSSE
17036 1-8 UNC · STD OH4 45 125 20 HSSE
17038 1-12 UNF · STD OH3 45 125 20 HSSE
17053 1 1/4-12 UNF · STD OH3 37 105 24 HSSE
17051 1 1/4-7 UNC · STD OH4 51 145 24 HSSE
17065 1 1/2-12 UNF · STD OH3 39 115 30 HSSE
17063 1 1/2-6 UNC · STD OH4 60 160 30 HSSE
16800 W 1/8-40 · STD OH2 11 46 4 HSSE
16804 W 1/4-20 · STD OH2 19 62 6 HSSE
16810 W 3/8-16 · STD OH3 24 75 7 HSSE
16816 W 1/2-12 · STD OH3 29 85 9 HSSE
16819 W 5/8-11 · STD OH3 32 95 12 HSSE
16822 W 3/4-10 · STD OH3 37 105 14 HSSE
16825 W 7/8-9 · STD OH3 38 115 17 HSSE
16830 W 1-8 · STD OH3 45 125 20 HSSE
16834 W 1 1/8-7 · STD OH3 48 135 22 HSSE
16837 W 1 1/4-7 · STD OH3 51 145 24 HSSE
16843 W 1 1/2-6 · STD OH3 61 160 30 HSSE
17901 SM 3/32-56 · STD OH2 13 42 3 HSSE
17903 SM 1/8-44 · STD OH2 11 46 4 HSSE
17905 SM 9/64-40 · STD OH2 13 48 4 HSSE
17907 SM 11/64-40 · STD OH2 13 55 5 HSSE
17910 SM 3/16-28 · STD OH2 16 60 5.5 HSSE
17911 SM 3/16-32 · STD OH2 16 60 5.5 HSSE
17915 SM 15/64-28 · STD OH2 19 62 6 HSSE
17917 SM 1/4-24 · STD OH2 19 62 6 HSSE
17920 SM 1/4-40 · STD OH2 19 62 6 HSSE
17921 SM 9/32-20 · STD OH2 22 65 6.5 HSSE
17922 SM 9/32-28 · STD OH2 22 65 6.5 HSSE
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