Reamers

Reamers

Made in USA since 1992

Common reamer types

Chucking Reamers
Chucking Reamers The workhorse — machine reaming to size HSS, cobalt or carbide Best for Finishing drilled or bored holes to tolerance
Dowel Pin Reamers
Dowel Pin Reamers Sized for standard dowel pin fits HSS or cobalt Best for Tooling, fixturing and mold alignment
Expansion Reamers
Expansion Reamers Screw expands the head to restore size Straight or taper shank Best for Long service where regrinding pays
Hand Reamers
Hand Reamers Turned by hand, not under power Straight flute or left-hand spiral Best for Fitting, repair and toolroom work
Taper Pin Reamers
Taper Pin Reamers Cuts the taper for standard taper pins Straight, LH spiral or LH helical Best for Pinning gears and pulleys to shafts

Specialty reamers

HSS Safety Reamers LH Spiral
HSS Safety Reamers LH Spiral Hex shank, 1-1/16 to 2 inch Tapered point enters misaligned holes Best for Heavy structural steel assembly
HSS Capscrew Counterbores
HSS Capscrew Counterbores Flat-bottomed seat for a socket head Built-in pilot holds alignment Best for Recessing capscrews flush or below surface
HSS Bridge Reamers LH Spiral
HSS Bridge Reamers LH Spiral Taper shank with a pilot point Left-hand spiral, right-hand cut Best for Aligning bolt holes in structural steel
HSS Construction Reamers LH Spiral
HSS Construction Reamers LH Spiral Flatted shank, black and gold oxide Left-hand spiral, right-hand cut Best for Bolt clearance holes in beams and chassis
HSS Taper Pipe
HSS Taper Pipe Reams the taper before pipe tapping 6 to 12 flute options Best for Dryseal and ANPT thread preparation

Atlas Cutting Tools carries one of the most complete ranges of reamers in the industry. 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.

  • Compare SKU Vendor 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 Price Quantity
    A50339 ACT 0.1870 0.1870 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 36
    $55.29
  • A78721 ACT J 0.277 0.2485 1-1/2 6 6 Uncoated 10
    $35.71
  • A52645 ACT 0.626 O/U 0.6260 0.5615 2-1/4 9 8 Uncoated 76
    $64.36
  • A51696 ACT 0.132 0.1275 1 4 4 Uncoated 26
    $27.70
  • A50340 ACT 3/16 0.1875 0.1875 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 87
    $49.73
  • A52646 ACT 16.0mm 0.6299 0.5615 2-1/4 9 8 Uncoated 18
    $64.36
  • A51697 ACT 0.1325 0.1275 1 4 4 Uncoated 13
    $27.70
  • A50341 ACT 0.1880 0.1880 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 100
    $55.29
  • A78722 ACT K 0.281 0.2485 1-1/2 6 6 Uncoated 9
    $35.71
  • A52647 ACT 41/64 0.6406 0.5615 2-1/4 9 8 Uncoated 11
    $64.32
  • A51698 ACT 0.133 0.1275 1 4 4 Uncoated 21
    $27.70
  • A50342 ACT 0.1885 0.1885 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 47
    $59.45
  • A52648 ACT 16.5mm 0.6496 0.5615 2-1/4 9 8 Uncoated 17
    $67.13
  • A51699 ACT 0.1335 0.1275 1 4 4 Uncoated 8
    $27.70
  • A50343 ACT #12 0.1890 0.1890 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 80
    $51.32
  • A78723 ACT 9/32 0.2813 0.2485 1-1/2 6 6 Uncoated 10
    $33.81
  • A52649 ACT 21/32 0.6562 0.5615 2-1/4 9 8 Uncoated 17
    $69.01
  • A51700 ACT 0.134 0.1275 1 4 4 Uncoated 100
    $27.70
  • A50344 ACT 0.1900 0.1900 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 21
    $55.29
  • A52650 ACT 17.0mm 0.6693 0.5615 2-1/4 9 8 Uncoated 14
    $72.41
  • A51701 ACT 0.1345 0.1275 1 4 4 Uncoated 9
    $27.70
  • A50345 ACT #11 0.1910 0.1910 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 24
    $62.55
  • A78724 ACT L 0.29 0.2792 1-1/2 6 6 Uncoated 13
    $35.71
  • A52651 ACT 43/64 0.6719 0.5615 2-1/4 9 8 Uncoated 23
    $72.41
  • A51702 ACT 0.135 0.1275 1 4 4 Uncoated 61
    $27.70
  • A50346 ACT 0.1920 0.1920 7/8 2-3/4 1-3/4 0.0250 4 Uncoated 22
    $66.91
  • A52652 ACT 0.6865 O/U 0.6865 0.5615 2-1/4 9 8 Uncoated 9
    $72.37
  • A51703 ACT 0.1355 0.1275 1 4 4 Uncoated 10
    $27.70
  • A50347 ACT 0.1930 0.1930 7/8 2-3/4 1-3/4 0.0250 4 Uncoated 16
    $66.91
  • A78725 ACT M 0.295 0.2792 1-1/2 6 6 Uncoated 2
    $35.71
  • A52653 ACT 11/16 0.6875 0.5615 2-1/4 9 8 Uncoated 20
    $69.19
  • A51704 ACT 0.1365 0.135 1 4 4 Uncoated 10
    $27.70
  • A50348 ACT #10 0.1935 0.1935 7/8 2-3/4 1-3/4 0.0250 4 Uncoated 18
    $62.55
  • A52654 ACT 0.6885 O/U 0.6885 0.5615 2-1/4 9 8 Uncoated 13
    $77.88
  • A51705 ACT 0.137 0.135 1 4 4 Uncoated 19
    $27.70
  • A50349 ACT 0.1940 0.1940 7/8 2-3/4 1-3/4 0.0250 4 Uncoated 37
    $66.91
  • A78726 ACT 7.5mm 0.2953 0.2792 1-1/2 6 6 Uncoated 3
    $35.71
  • A52655 ACT 17.5mm 0.6890 0.5615 2-1/4 9 8 Uncoated 7
    $77.88
  • A51706 ACT 0.1375 0.135 1 4 4 Uncoated 7
    $27.70
  • A50350 ACT 0.1950 0.1950 7/8 2-3/4 1-3/4 0.0250 4 Uncoated 16
    $66.91
  • A52656 ACT 45/64 0.7031 0.5615 2-1/4 9 8 Uncoated 20
    $77.81
  • A51707 ACT 0.138 0.135 1 4 4 Uncoated 28
    $27.70
  • A50351 ACT #9 0.1960 0.1960 1 3 1-3/4 0.0250 4 Uncoated 24
    $62.55
  • A52657 ACT 18.0mm 0.7087 0.5615 2-1/4 9 8 Uncoated 2
    $77.81
  • A51708 ACT 0.1385 0.135 1 4 4 Uncoated 17
    $27.70
  • A50352 ACT 5.0mm 0.1969 5.000 1 3 44mm 0.0250 4 Uncoated 18
    $66.91
  • A78727 ACT N 0.302 0.2792 1-1/2 6 6 Uncoated 13
    $35.71
  • A52658 ACT 23/32 0.7188 0.5615 2-1/4 9 8 Uncoated 18
    $77.26
  • A51709 ACT 0.139 0.135 1 4 4 Uncoated 19
    $27.70
  • A50353 ACT 0.1970 0.1970 1 3 1-3/4 0.0250 4 Uncoated 17
    $66.91
  • A52659 ACT 18.5mm 0.7283 0.624 2-1/2 9 8 Uncoated 7
    $80.69
  • A51710 ACT 0.1395 0.135 1 4 4 Uncoated 15
    $27.70
  • A50354 ACT 0.1980 0.1980 1 3 1-3/4 0.0250 4 Uncoated 15
    $66.91
  • A78728 ACT .3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated 2
    $33.81
  • A52660 ACT 47/64 0.7344 0.624 2-1/2 9 8 Uncoated 12
    $89.96
  • A51711 ACT 0.14 0.135 1 4 4 Uncoated 26
    $27.70
  • A50355 ACT #8 0.1990 0.1990 1 3 1-3/4 0.0250 4 Uncoated 23
    $62.55
  • A52661 ACT 19.0mm 0.7480 0.624 2-1/2 9 8 Uncoated 22
    $89.88
  • A51712 ACT 0.141 0.135 1 4 4 Uncoated 21
    $26.55
  • A50356 ACT 0.2000 0.2000 1 3 1-3/4 0.0250 4 Uncoated 77
    $66.91
  • A52662 ACT 0.749 O/U 0.7490 0.624 2-1/2 9 8 Uncoated 23
    $89.88
  • A51713 ACT 0.1415 0.135 1 4 4 Uncoated 14
    $26.55
  • A50357 ACT #7 0.2010 0.2010 1 3 1-3/4 0.0250 4 Uncoated 36
    $62.55
  • A78729 ACT .3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated 16
    $33.81
  • A52663 ACT 3/4 0.7500 0.624 2-1/2 9 8 Uncoated 53
    $77.06
  • A51714 ACT 0.142 0.135 1 4 4 Uncoated 18
    $26.55
  • A50358 ACT 0.2020 0.2020 1 3 1-3/4 0.0250 4 Uncoated 24
    $66.91
  • A52664 ACT 0.751 O/U 0.7510 0.624 2-1/2 9 8 Uncoated 34
    $85.92
  • A51715 ACT 0.1425 0.135 1 4 4 Uncoated 13
    $26.55
  • A50359 ACT 0.2030 0.2030 1 3 1-3/4 0.0250 4 Uncoated 48
    $66.91
  • A78730 ACT 8.0mm 0.315 0.2792 1-1/2 6 6 Uncoated 24
    $35.71
  • A52665 ACT 49/64 0.7656 0.624 2-1/2 9 8 Uncoated 19
    $85.84
  • A51716 ACT 0.143 0.135 1 4 4 Uncoated 15
    $26.55
  • A50360 ACT 13/64 0.2031 0.2031 1 3 1-3/4 0.0250 4 Uncoated Available to Order*
    $60.40
  • A52666 ACT 19.5mm 0.7677 0.624 2-1/2 9 8 Uncoated 11
    $85.84
  • A51717 ACT 0.1435 0.135 1 4 4 Uncoated 14
    $26.55
  • A50361 ACT #6 0.2040 0.2040 1 3 1-3/4 0.0250 4 Uncoated 23
    $62.55
  • A78731 ACT O 0.316 0.2792 1-1/2 6 6 Uncoated 14
    $35.71
  • A52667 ACT 25/32 0.7812 0.624 2-1/2 9 8 Uncoated 14
    $83.70
  • A51718 ACT 0.1445 0.143 1 4 4 Uncoated 6
    $26.39
  • A50362 ACT 0.2050 0.2050 1 3 1-3/4 0.0250 4 Uncoated 20
    $66.91
  • A52668 ACT 20.0mm 0.7874 0.624 2-1/2 9 8 Uncoated 10
    $91.86
  • A51719 ACT 0.145 0.143 1 4 4 Uncoated 15
    $26.55
  • A50363 ACT #5 0.2055 0.2055 1 3 1-3/4 0.0250 4 Uncoated 10
    $62.55
  • A78732 ACT P 0.323 0.2792 1-1/2 6 6 Uncoated 10
    $38.18
  • A52669 ACT 51/64 0.7969 0.624 2-1/2 9 8 Uncoated 7
    $91.86
  • A51720 ACT 0.1455 0.143 1 4 4 Uncoated 14
    $26.55
  • A50364 ACT 0.2060 0.2060 1 3 1-3/4 0.0250 4 Uncoated 10
    $66.91
  • A52670 ACT 20.5mm 0.8071 0.624 2-1/2 9 8 Uncoated 5
    $91.78
  • A51721 ACT 0.146 0.143 1 4 4 Uncoated 17
    $26.55
  • A50365 ACT 0.2070 0.2070 1 3 1-3/4 0.0250 4 Uncoated 9
    $66.91
  • A78733 ACT 21/64 0.3281 0.2792 1-1/2 6 6 Uncoated 3
    $38.18
  • A52671 ACT 0.8115 O/U 0.8115 0.624 2-1/2 9 8 Uncoated 15
    $91.78
  • A51722 ACT 0.1465 0.143 1 4 4 Uncoated 15
    $26.39
  • A50366 ACT 0.2080 0.2080 1 3 1-3/4 0.0250 4 Uncoated 11
    $66.91
  • A52672 ACT 13/16 0.8125 0.624 2-1/2 9 8 Uncoated 21
    $83.40
  • A51723 ACT 0.1475 0.143 1 4 4 Uncoated 18
    $26.39
  • A50367 ACT #4 0.2090 0.2090 1 3 1-3/4 0.0250 4 Uncoated 12
    $62.55
  • A78734 ACT Q 0.332 0.2792 1-1/2 6 6 Uncoated 12
    $38.18
  • A52673 ACT 0.8135 O/U 0.8135 0.624 2-1/2 9 8 Uncoated 12
    $91.78

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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