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Alma Bolt Company & Prime Fasteners 1-800-526-2200

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Rotary Carbide Tipped Drill Bits

Rotary Carbide Tipped

For use in a rotation only drill equipped with a 3 jaw Jacobs type chuck for drilling into soft or brittle masonry materials. The fast spiral flute style makes it a good choice for fast drilling into block or brick where the deep fluted drills perform best in concrete where the wide fluting helps clean chips and dust from the hole. Meets ANSI standards. Available sizes listed in table below.

DEEP FLUTE Drill Bit Sizes
Part#
Drill Dia. (In)
Drill Size (In.)
Shank Size (In.)
Usable Length (In.)
8500R
1/8
1/8 x 2 1/2
1/8
1 3/4
8502R
5/32
5/32 x 3
5/32
8504R
11/64
11/64 x 3
11/64
8506R
3/16
3/16 x 3
3/16
8507R
7/32
7/32 x 3
7/32
8508R
1/4
1/4 x 4
1/4
8552R
1/4 x 6
4 1/2
8553R
1/4 x 12
10 1/2
8554R
1/4 x 18
16 1/4
8510R
9/32
9/32 x 4
2 1/2
8512R
5/16
5/16 x 4
8556R
5/16 x 6
4 1/2
8558R
5/16 x 18
16 1/4
8514R
3/8
3/8 x 4
2 1/2
8560R
3/8 x 6
4 1/2
8561R
3/8 x 12
10 1/2
8562R
3/8 x 18
16 1/4
8516R
7/16
7/16 x 6
3/8
4
8520R
1/2
1/2 x 6
8522R *
1/4
8566R
1/2 x 12
3/8
10 1/2
8567R
1/2 x 18
16 1/4
8526R
5/8
5/8 x 6
1/2
4
8570R
5/8 x 12
10 1/2
8571R
5/8 x 18
16 1/4
8528R
11/16
11/16 x 6
4
8530R
3/4
3/4 x 6
8573R
3/4 x 12
10 1/2
8574R
3/4 x 18
16 1/4
8532R
7/8
7/8 x 6
4
8534R
1
1 x 6
8580R
1 x 18
16 1/4
* 1/4" Shank
FAST SPIRAL FLUTES Drill Bit Sizes
Part#
Drill Dia. (In)
Drill Size (In.)
Shank Size (In.)
Usable Length (In.)
8600R
1/8
1/8 x 2 1/2
1/8
1 3/4
8602R
5/32
5/32 x 3
5/32
8606R
3/16
3/16 x 3
3/16
8650R
3/16 x 8
6 1/2
8608R
1/4
1/4 x 4
1/4
1 3/4
8652R
1/4 x 6
4 1/2
8653R
1/4 x 12
10 1/2
8654R
1/4 x 18
16 1/4
8610R
9/32
9/32 x 4
2 1/2
8612R
5/16
5/16 x 4
8656R
5/16 x 6
4 1/2
8614R
3/8
3/8 x 4
2 1/2
8660R
3/8 x 6
4 1/2
8661R
3/8 x 12
10 1/2
8662R
3/8 x 18
16 1/4
8620R
1/2
1/2 x 6
3/8
4
8622R *
1/4
8666R
1/2 x 12
3/8
10 1/2
8667R
1/2 x 18
16 1/4
8626R
5/8
5/8 x 6
1/2
4
8630R
3/4
3/4 x 6
8632R
7/5
7/8 x 6
8634R
1
1 x 6
* 1/4" Shank
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