Reamers
Atlas Cutting Tools carries one of the most complete ranges of reamer sizes and styles in the industry, including over 5,000 HSS and Cobalt Chucking Reamers alone. Shop Chucking Reamers (straight flute and spiral flute, in HSS, Cobalt, and Carbide), Dowel Pin Reamers, Expansion Reamers, Hand Reamers, Taper Pin Reamers, and specialty items like Bridge Reamers, Capscrew Counterbores, Construction Reamers, Safety Reamers, and Taper Pipe Reamers.
Reamers are precision-ground for tight tolerance hole finishing after drilling or boring, and material choice matters: HSS suits general-purpose work, Cobalt holds up better in stainless and tougher alloys, and Carbide delivers the longest tool life in high-volume production. All reamers are USA manufactured, and most sizes ship the same day with a 97% fill rate.
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Size (D1) Decimal Equivalent (D1) Flute Diameter (D1) Shank Diameter (D2) Pilot Length (L2) Pilot Diameter (D3) Flute Length (L2) Overall Length (L1) Total Reach (L3) Axial Chamfer Morse Taper Small Diameter Large Diameter Body Length (L3) Size of Square Hex Shank Diameter Number of Flutes Coating In Stock Sku Price Quantity 17/64 0.2485 0.2485 1-1/2 6 6 Uncoated 13 $44.24 -
17/64 0.2656 0.2485 1-1/2 6 6 Uncoated 11 $34.51 -
#7 0.2010 0.1895 1-1/4 5 6 Uncoated 13 $30.23 -
#7 0.2010 0.1895 1-1/4 5 6 Uncoated 25 $25.94 -
0.075 0.072 3/4 3 4 Uncoated 24 $22.97 -
#32 0.1160 0.1160 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 15 $34.76 -
H 0.2660 0.2485 1-1/2 6 6 Uncoated Call $17.80 -
H 0.2485 0.2485 1-1/2 6 6 Uncoated 6 $44.12 -
H 0.2660 0.2485 1-1/2 6 6 Uncoated 8 $34.51 -
13/64 0.2031 0.1945 1-1/4 5 6 Uncoated 19 $30.23 -
13/64 0.2031 0.1945 1-1/4 5 6 Uncoated 21 $25.94 -
0.0755 0.072 3/4 3 4 Uncoated 11 $22.97 -
0.1170 0.1170 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 24 $36.91 -
I 0.2720 0.2485 1-1/2 6 6 Uncoated Call $17.80 -
I 0.2485 0.2485 1-1/2 6 6 Uncoated 8 $44.24 -
I 0.2720 0.2485 1-1/2 6 6 Uncoated 11 $34.51 -
#6 0.2040 0.1945 1-1/4 5 6 Uncoated 5 $30.23 -
#6 0.2040 0.1945 1-1/4 5 6 Uncoated 17 $25.94 -
0.0765 0.072 3/4 3 4 Uncoated 24 $22.97 -
0.1180 0.1180 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 23 $36.91 -
7.0MM 0.2756 0.2485 1-1/2 6 6 Uncoated Call $17.80 -
7.0mm 0.2485 0.2485 1-1/2 6 6 Uncoated 15 $44.12 -
7.0mm 0.2756 0.2485 1-1/2 6 6 Uncoated 11 $34.51 -
#5 0.2055 0.2016 1-1/4 5 6 Uncoated 14 $30.23 -
#5 0.2055 0.2016 1-1/4 5 6 Uncoated 17 $25.94 -
0.077 0.072 3/4 3 4 Uncoated 18 $22.97 -
3.0mm 0.1181 3.000 5/8 2-1/4 28mm 0.0150 4 Uncoated 23 $33.85 -
J 0.2770 0.2485 1-1/2 6 6 Uncoated Call $17.80 -
J 0.2485 0.2485 1-1/2 6 6 Uncoated 1 $44.24 -
J 0.2770 0.2485 1-1/2 6 6 Uncoated 3 $34.51 -
#4 0.2090 0.2016 1-1/4 5 6 Uncoated 10 $30.23 -
#4 0.2090 0.2016 1-1/4 5 6 Uncoated 16 $25.94 -
0.0775 0.072 3/4 3 4 Uncoated 24 $22.97 -
0.1190 0.1190 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 5 $36.91 -
K 0.2810 0.2485 1-1/2 6 6 Uncoated Call $17.80 -
K 0.2485 0.2485 1-1/2 6 6 Uncoated 14 $44.12 -
K 0.2810 0.2485 1-1/2 6 6 Uncoated 25 $34.51 -
#3 0.2130 0.2075 1-1/4 5 6 Uncoated 11 $30.23 -
#3 0.2130 0.2075 1-1/4 5 6 Uncoated 25 $25.94 -
0.078 0.072 3/4 3 4 Uncoated 18 $22.97 -
#31 0.1200 0.1200 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 19 $34.76 -
9/32 0.2813 0.2485 1-1/2 6 6 Uncoated Call $16.90 -
9/32 0.2485 0.2485 1-1/2 6 6 Uncoated 8 $41.94 -
9/32 0.2813 0.2485 1-1/2 6 6 Uncoated 17 $32.66 -
5.5mm 0.2165 0.2075 1-1/4 5 6 Uncoated 11 $30.23 -
5.5mm 0.2165 0.2075 1-1/4 5 6 Uncoated 20 $25.94 -
0.079 0.0771 3/4 3 4 Uncoated 24 $22.97 -
0.1210 0.1210 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 17 $36.91 -
L 0.2900 0.2792 1-1/2 6 6 Uncoated Call $17.80 -
L 0.2792 0.2792 1-1/2 6 6 Uncoated 11 $44.12 -
L 0.2900 0.2792 1-1/2 6 6 Uncoated 8 $34.51 -
7/32 0.2188 0.2075 1-1/4 5 6 Uncoated 2 $30.23 -
7/32 0.2188 0.2075 1-1/4 5 6 Uncoated 31 $25.94 -
0.0795 0.0771 3/4 3 4 Uncoated 17 $22.97 -
0.1220 0.1220 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 11 $36.91 -
M 0.2950 0.2792 1-1/2 6 6 Uncoated Call $17.80 -
M 0.2792 0.2792 1-1/2 6 6 Uncoated 8 $33.69 -
M 0.2950 0.2792 1-1/2 6 6 Uncoated 9 $34.51 -
#2 0.2210 0.2173 1-1/2 6 6 Uncoated 48 $31.22 -
#2 0.2210 0.2173 1-1/2 6 6 Uncoated 25 $26.85 -
0.08 0.0771 3/4 3 4 Uncoated 23 $22.97 -
0.1230 0.1230 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 9 $36.91 -
7.5mm 0.2953 0.2792 1-1/2 6 6 Uncoated Call $17.80 -
7.5mm 0.2792 0.2792 1-1/2 6 6 Uncoated 46 $44.24 -
7.5mm 0.2953 0.2792 1-1/2 6 6 Uncoated 6 $34.51 -
#1 0.2280 0.2173 1-1/2 6 6 Uncoated 5 $31.22 -
#1 0.2280 0.2173 1-1/2 6 6 Uncoated 23 $26.85 -
0.0805 0.0771 3/4 3 4 Uncoated 46 $22.97 -
0.1235 0.1235 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 2 $48.82 -
19/64 0.2969 0.2792 1-1/2 6 6 Uncoated Call $17.80 -
19/64 0.2792 0.2792 1-1/2 6 6 Uncoated 7 $44.12 -
19/64 0.2969 0.2792 1-1/2 6 6 Uncoated 12 $34.51 -
A 0.2340 0.2265 1-1/2 6 6 Uncoated 16 $31.22 -
A 0.2340 0.2265 1-1/2 6 6 Uncoated 23 $26.85 -
0.0815 0.0771 3/4 3 4 Uncoated 17 $22.97 -
0.1240 0.1240 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 51 $36.91 -
N 0.3020 0.2792 1-1/2 6 6 Uncoated Call $17.80 -
N 0.2792 0.2792 1-1/2 6 6 Uncoated 11 $44.12 -
N 0.3020 0.2792 1-1/2 6 6 Uncoated 11 $34.51 -
15/64 0.2344 0.2265 1-1/2 6 6 Uncoated 16 $31.22 -
15/64 0.2344 0.2265 1-1/2 6 6 Uncoated 24 $26.85 -
0.0825 0.081 3/4 3 4 Uncoated 4 $22.89 -
0.1245 0.1245 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 100 $40.58 -
0.3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated Call $16.90 -
0.3115 O/U 0.2792 0.2792 1-1/2 6 6 Uncoated 23 $41.94 -
0.3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated 6 $32.66 -
6.0mm 0.2362 0.2265 1-1/2 6 6 Uncoated 32 $31.38 -
6.0mm 0.2362 0.2265 1-1/2 6 6 Uncoated 100 $28.29 -
0.083 0.081 3/4 3 4 Uncoated 17 $22.97 -
1/8 0.1250 0.1250 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 64 $33.24 -
5/16 0.3125 0.2792 1-1/2 6 6 Uncoated Call $16.01 -
5/16 0.2792 0.2792 1-1/2 6 6 Uncoated 10 $40.04 -
5/16 0.3125 0.2792 1-1/2 6 6 Uncoated 32 $31.22 -
B 0.2380 0.2329 1-1/2 6 6 Uncoated 15 $31.38 -
B 0.2380 0.2329 1-1/2 6 6 Uncoated 19 $28.29 -
0.0835 0.081 3/4 3 4 Uncoated 18 $22.97 -
0.1255 0.1255 5/8 2-1/4 1-1/8 0.0150 4 Uncoated 64 $40.58 -
0.3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated Call $16.90 -
0.3135 O/U 0.2792 0.2792 1-1/2 6 6 Uncoated 22 $41.94 -
0.3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated 16 $32.66