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
    A50308 ACT #20 0.1610 0.1610 7/8 2-1/2 1-1/2 0.0220 4 Uncoated 47
    $46.02
  • A78790 ACT #1 0.228 0.2173 1-1/2 6 6 Uncoated 12
    $29.31
  • A53118 ACT 25/32 0.7813 0.624 2-1/2 9-1/2 8 Uncoated 17
    $88.52
  • A52906 ACT 27/64 0.4219 0.373 1-3/4 7 6 Uncoated 10
    $56.95
  • A52614 ACT 27/64 0.4219 0.373 1-3/4 7 6 Uncoated 22
    $38.30
  • A51665 ACT 0.114 0.112 7/8 3-1/2 4 Uncoated 26
    $19.84
  • A50309 ACT 0.1620 0.1620 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 20
    $49.57
  • A53119 ACT 13/16 0.8125 0.624 2-1/2 9-1/2 8 Uncoated 12
    $88.37
  • A52907 ACT 11.0mm 0.4331 0.373 1-3/4 7 6 Uncoated 13
    $56.95
  • A52615 ACT 11.0mm 0.4331 0.373 1-3/4 7 6 Uncoated 15
    $38.30
  • A51666 ACT 0.1145 0.112 7/8 3-1/2 4 Uncoated 14
    $19.84
  • A50310 ACT 0.1630 0.1630 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 20
    $49.57
  • A78791 ACT A 0.234 0.2265 1-1/2 6 6 Uncoated 2
    $29.31
  • A53120 ACT 27/32 0.8438 0.624 2-1/2 9-1/2 8 Uncoated 6
    $109.96
  • A52908 ACT 0.4365 O/U 0.4365 0.373 1-3/4 7 6 Uncoated 7
    $56.66
  • A52616 ACT 0.4365 O/U 0.4365 0.373 1-3/4 7 6 Uncoated 18
    $36.24
  • A51667 ACT 0.115 0.112 7/8 3-1/2 4 Uncoated 12
    $19.84
  • A50311 ACT 0.1640 0.1640 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 16
    $49.57
  • A53121 ACT 7/8 0.8750 0.749 2-5/8 10 8 Uncoated 14
    $104.41
  • A52909 ACT 7/16 0.4375 0.373 1-3/4 7 6 Uncoated 18
    $56.95
  • A52617 ACT 7/16 0.4375 0.373 1-3/4 7 6 Uncoated 33
    $36.24
  • A51668 ACT 0.1155 0.112 7/8 3-1/2 4 Uncoated 14
    $19.84
  • A50312 ACT 0.1650 0.1650 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 12
    $46.02
  • A53122 ACT 29/32 0.9063 0.749 2-5/8 10 8 Uncoated 11
    $121.06
  • A52910 ACT 0.4385 O/U 0.4385 0.373 1-3/4 7 6 Uncoated 20
    $56.66
  • A52618 ACT 0.4385 O/U 0.4385 0.373 1-3/4 7 6 Uncoated 22
    $36.24
  • A51669 ACT 0.1165 0.112 7/8 3-1/2 4 Uncoated 11
    $19.84
  • A50313 ACT #19 0.1660 0.1660 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 18
    $46.02
  • A78792 ACT 6.0mm 0.2362 0.2265 1-1/2 6 6 Uncoated 14
    $29.65
  • A53123 ACT 15/16 0.9375 0.749 2-5/8 10 8 Uncoated 13
    $115.24
  • A52911 ACT 11.5mm 0.4528 0.373 1-3/4 7 6 Uncoated 39
    $65.20
  • A52619 ACT 11.5mm 0.4528 0.373 1-3/4 7 6 Uncoated 13
    $41.52
  • A51670 ACT 0.117 0.112 7/8 3-1/2 4 Uncoated 17
    $19.84
  • A50314 ACT 0.1670 0.1670 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 23
    $49.57
  • A53124 ACT 31/32 0.9688 0.749 2-5/8 10 8 Uncoated 11
    $129.10
  • A52912 ACT 29/64 0.4531 0.373 1-3/4 7 6 Uncoated 11
    $64.98
  • A52620 ACT 29/64 0.4531 0.373 1-3/4 7 6 Uncoated 20
    $41.52
  • A51671 ACT 0.1175 0.112 7/8 3-1/2 4 Uncoated 48
    $19.84
  • A50315 ACT 0.1680 0.1680 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 15
    $49.57
  • A78710 ACT B 0.238 0.2329 1-1/2 6 6 Uncoated 11
    $29.65
  • A53125 ACT 1 1.0000 0.874 2-3/4 10-1/2 8 Uncoated 7
    $130.83
  • A52913 ACT 15/32 0.4688 0.373 1-3/4 7 6 Uncoated 15
    $65.20
  • A52621 ACT 15/32 0.4688 0.373 1-3/4 7 6 Uncoated 13
    $41.52
  • A51672 ACT 0.118 0.112 7/8 3-1/2 4 Uncoated 18
    $19.84
  • A50316 ACT 0.1690 0.1690 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 10
    $49.44
  • A53126 ACT 1-1/16 1.0625 0.874 2-3/4 10-1/2 8 Uncoated 23
    $144.27
  • A52914 ACT 12.0mm 0.4724 0.4355 2 8 6 Uncoated 13
    $65.20
  • A52622 ACT 12.0mm 0.4724 0.4355 2 8 6 Uncoated 52
    $41.52
  • A51673 ACT 0.1185 0.112 7/8 3-1/2 4 Uncoated 59
    $19.84
  • A50317 ACT #18 0.1695 0.1695 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 21
    $46.02
  • A78711 ACT C 0.242 0.2329 1-1/2 6 6 Uncoated 2
    $29.47
  • A53127 ACT 1-1/8 1.1250 0.874 2-7/8 11 8 Uncoated 1
    $153.02
  • A52915 ACT 31/64 0.4844 0.4355 2 8 6 Uncoated 13
    $64.98
  • A52623 ACT 31/64 0.4844 0.4355 2 8 6 Uncoated 16
    $41.52
  • A51674 ACT 0.119 0.112 7/8 3-1/2 4 Uncoated 58
    $19.84
  • A50318 ACT 0.1700 0.1700 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 17
    $49.57
  • A52916 ACT 12.5mm 0.4921 0.4355 2 8 6 Uncoated 14
    $64.98
  • A52624 ACT 12.5mm 0.4921 0.4355 2 8 6 Uncoated 8
    $41.52
  • A51675 ACT 0.1195 0.112 7/8 3-1/2 4 Uncoated 21
    $19.84
  • A50319 ACT 0.1710 0.1710 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 16
    $49.57
  • A78712 ACT D 0.246 0.2329 1-1/2 6 6 Uncoated 11
    $29.65
  • A52917 ACT 0.499 O/U 0.4990 0.4355 2 8 6 Uncoated 17
    $65.20
  • A52625 ACT 0.499 O/U 0.4990 0.4355 2 8 6 Uncoated 30
    $39.50
  • A51676 ACT 0.1205 0.119 7/8 3-1/2 4 Uncoated 20
    $19.84
  • A50320 ACT 11/64 0.1719 0.1719 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 14
    $44.58
  • A52918 ACT 1/2 0.5000 0.4355 2 8 6 Uncoated 38
    $65.20
  • A52626 ACT 1/2 0.5000 0.4355 2 8 6 Uncoated 81
    $39.50
  • A51677 ACT 0.121 0.119 7/8 3-1/2 4 Uncoated 14
    $19.84
  • A50321 ACT 0.1720 0.1720 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 9
    $49.57
  • A78713 ACT .249 O/U 0.249 0.2405 1-1/2 6 6 Uncoated 12
    $31.53
  • A52919 ACT 0.501 O/U 0.5010 0.4355 2 8 6 Uncoated 21
    $65.20
  • A52627 ACT 0.501 O/U 0.5010 0.4355 2 8 6 Uncoated 100
    $39.50
  • A51678 ACT 0.1215 0.119 7/8 3-1/2 4 Uncoated 12
    $19.84
  • A50322 ACT #17 0.1730 0.1730 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 20
    $46.02
  • A52920 ACT 17/32 0.5313 0.4355 2 8 6 Uncoated 32
    $73.27
  • A52628 ACT 13.0mm 0.5118 0.4355 2 8 6 Uncoated 29
    $51.67
  • A51679 ACT 0.122 0.119 7/8 3-1/2 4 Uncoated 16
    $19.84
  • A50323 ACT 0.1740 0.1740 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 8
    $49.57
  • A52921 ACT 9/16 0.5625 0.4355 2 8 8 Uncoated 17
    $73.27
  • A52629 ACT 33/64 0.5156 0.4355 2 8 6 Uncoated 20
    $51.67
  • A51680 ACT 0.1225 0.119 7/8 3-1/2 4 Uncoated 24
    $19.84
  • A50324 ACT 0.1750 0.1750 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 14
    $49.57
  • A78714 ACT .251 O/U 0.251 0.2405 1-1/2 6 6 Uncoated 7
    $31.53
  • A52922 ACT 19/32 0.5938 0.4355 2 8 8 Uncoated 8
    $73.27
  • A52630 ACT 17/32 0.5312 0.4355 2 8 6 Uncoated 23
    $49.06
  • A51681 ACT 0.123 0.119 7/8 3-1/2 4 Uncoated 24
    $19.84
  • A50325 ACT 0.1760 0.1760 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 20
    $49.57
  • A52923 ACT 5/8 0.6250 0.5615 2-1/4 9 8 Uncoated 19
    $85.44
  • A52631 ACT 13.5mm 0.5315 0.4355 2 8 6 Uncoated 19
    $51.67
  • A51682 ACT 0.1235 0.119 7/8 3-1/2 4 Uncoated 15
    $19.84
  • A50326 ACT #16 0.1770 0.1770 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 16
    $46.02
  • A78715 ACT 6.5mm 0.2559 0.2405 1-1/2 6 6 Uncoated 23
    $29.47
  • A52924 ACT 21/32 0.6563 0.5615 2-1/4 9 8 Uncoated 18
    $98.50
  • A52632 ACT 35/64 0.5469 0.4355 2 8 8 Uncoated 14
    $51.67
  • A51683 ACT 0.1245 0.119 7/8 3-1/2 4 Uncoated 87
    $19.84
  • A50327 ACT 4.5mm 0.1772 4.500 7/8 2-3/4 38mm 0.0220 4 Uncoated 11
    $51.54
  • A52925 ACT 11/16 0.6875 0.5615 2-1/4 9 8 Uncoated 14
    $98.22
  • A52633 ACT 14.0mm 0.5512 0.4355 2 8 8 Uncoated 43
    $51.67
  • A51684 ACT 0.1247 0.119 7/8 3-1/2 4 Uncoated 19
    $19.84
  • A50328 ACT 0.1780 0.1780 7/8 2-3/4 1-1/2 0.0220 4 Uncoated 18
    $49.57
  • Total: items /

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