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download Product Catalogue PDF (2.4MB) - Goliath Threading Tools

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Machine Nut Tap - BSF<br />

3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8<br />

No. of Flutes 3 3 3 3 3 3 3 3 3 3<br />

1<br />

No. of Flutes 3<br />

LONG<br />

REACH TAPS<br />

Machine Nut Tap BA<br />

BS949<br />

Nominal<br />

Size<br />

Thread<br />

Form<br />

TPI<br />

Overall<br />

Length<br />

L ins<br />

Length of<br />

Thread<br />

l ins<br />

Diameter<br />

of Shank<br />

d 1 ins<br />

Square A/F<br />

ins<br />

Length of<br />

Square<br />

l 2 ins<br />

No. 0 BA 25.40 4.500 1.250 0.182 0.133 0.375<br />

No. 2 BA 31.40 4.500 1.000 0.132 0.100 0.312<br />

No. 4 BA 38.50 3.750 0.875 0.107 0.075 0.250<br />

No. 6 BA 47.90 3.500 0.750 0.082 - -<br />

No. 8 BA 59.10 3.500 0.625 0.063 - -<br />

Machine Nut Tap - BA<br />

No. 0 No. 2 No. 4 No. 6 No. 8<br />

No. of Flutes 3 3 3 3 3<br />

Table Reference<br />

Number<br />

Metric/Imperial<br />

Pitch Diameter<br />

Tolerance<br />

Class of Fit<br />

Machine Nut Tap BSPF<br />

For Parallel Threads<br />

BS949<br />

Nominal<br />

Size<br />

Thread<br />

Form<br />

TPI<br />

Overall<br />

Length<br />

L ins<br />

Length of<br />

Thread<br />

l ins<br />

Diameter<br />

of Shank<br />

d 1 ins<br />

Square A/F<br />

ins<br />

Length of<br />

Square<br />

l 2 ins<br />

1/8 BSP 28 3.75 1.000 0.318 0.238 0.562<br />

1/4 BSP 19 5.00 1.375 0.429 0.322 0.687<br />

3/8 BSP 19 5.00 1.375 0.542 0.406 0.750<br />

1/2 BSP 14 7.00 2.000 0.687 0.515 0.875<br />

Available in:<br />

Taper Lead<br />

Second Lead<br />

Bottom Lead<br />

Machine Nut Tap - BSPF<br />

1/8 1/4 3/8 1/2<br />

No. of Flutes 3 3 3 3<br />

1/8 1/4-1/2<br />

32<br />

www.goliathinternational.com

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