7Leaders

Oil-Feed Thread Mills (Whitworth) T788FX / T789FX

For Internal and External Thread

Code No. T788FX

Dc

AlCrN FX

MG Carbide

Thread

Pitch P

Dc mm

Lc mm

L mm

d h6

t Z

AlCrN T788FX

Code No.

BSW

BSF

1/4×20

20 4.6 13.3 50 6 3 20 7.6 19.7 60 8 3 18 5.6 16.2 50 6 3 18 8.8 23.3 75 10 3 16 7 19.860 8 3

T788FX 046 133 W 20 T788FX 076 197 W 20 T788FX 056 162 W 18 T788FX 088 233 W 18 T788FX 070 198 W 16 T788FX 100 261 W 16 T788FX 080 227 W 14 T788FX 128 318 W 14 T788FX 090 265 W 12 T788FX 118 335 W 11 T788FX 140 394 W 10 T788FX 160 437 W 09

● ● ● ● ● ● ● ● ● ● ●

3/8×20

5/16×18

7/16×18

3~5Z

3/8×16

1/2×16 ~ 9/16×16 16 10 26.1 75 10 4

lnternal

0.137P

7/16×14

14 8 22.760 8 4

5/8×14 ~ 11/16×14 14 12.8 31.8 100 16 4

1/2×12 ~9/16×12 3/4×12 ~13/16×12 12 9 26.5 75 10 4

5/8×11 3/4×10

7/8×11

11 11.8 33.5 75 12 4 10 14 39.4 100 16 4 9 16 43.7 100 16 4

R0.137P

External

1×10

● Please refer to page P139 for parameters.

7/8×9

1-1/8×9

Work Material P H M K N S

d

P Steel

H <38HRC

Hardened Steel

H <48HRC

Hardened Steel

M Stainless Steel

For Internal and External Thread

Code No. T789FX

Dc

K Cast Iron

Thread

Pitch P

Dc mm

Lc mm

L mm

d h6

t Z

AlCrN T789FX

Code No.

BSW

BSF

1/4×20

3/8×20

20 4.6 13.3 50 6 3 18 5.6 16.2 50 6 3 16 7 19.860 8 3

T789FX 046 133 W 20 T789FX 056 162 W 18 T789FX 070 198 W 16 T789FX 100 261 W 16 T789FX 080 227 W 14 T789FX 090 265 W 12

● ● ● ● ● ●

S Titanium

5/16×18

7/16×18

3/8×16

1/2×16 ~ 9/16×16 16 10 26.1 75 10 4

S Nickel

7/16×14 5/8×14 ~ 11/16×14 14 8 22.7 60 8 4

1/2×12 5/8×11

3/4×12 ~13/16×12 12 9 26.5 75 10 4

S High Temp Alloys

7/8×11

11 11.8 33.5 75 12 4

T789FX 118 335 W 11 ● Please refer to page P140 for parameters.

Feature of product: Suitable for carbon steel, alloy steel, below HRC48 hardened steel, stainless steel, and cast iron…etc.

d

137

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