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Plain Shank
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to manufacturers standard

Metric
To suit bolt ISO Metric/Din Standards
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

Metric
Spiral 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface.

Spiral, 3 flute. Medium duty. Sizes: M3, M4, M5, M6, M8, M10, M12.

M3-M12 Plain Shank Counterbores (Set-7)

Plain Shank
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

8MM HSS 3FL Str/Shk Sp/Fl Counterbore

M3-M12 Screwed Shank Counterbores (Set-7)

Metric
To suit bolt ISO Metric/Din Standards
Spiral flute, 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface. Manufactured to BS328: 5:1983.

6MM HSS 3FL Scr/Shk Sp/Fl Counterbore

Metric
Spiral 3 flute. Medium duty. Used for milling of pre-drilled holes to allow bolt or cap head screws to lie flush with the component surface.

1/8"x1/4" 3FL Str/Shk Sp/Fl Counterbore

3/8" X 1/4" S/S Solid Counterbore

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