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
    A78728 ACT .3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated 2
    $31.08
  • A52660 ACT 47/64 0.7344 0.624 2-1/2 9 8 Uncoated 12
    $86.92
  • A51711 ACT 0.14 0.135 1 4 4 Uncoated 26
    $26.76
  • A50355 ACT #8 0.1990 0.1990 1 3 1-3/4 0.0250 4 Uncoated 15
    $56.07
  • A52661 ACT 19.0mm 0.7480 0.624 2-1/2 9 8 Uncoated 22
    $86.84
  • A51712 ACT 0.141 0.135 1 4 4 Uncoated 21
    $25.66
  • A50356 ACT 0.2000 0.2000 1 3 1-3/4 0.0250 4 Uncoated 82
    $60.00
  • A52662 ACT 0.749 O/U 0.7490 0.624 2-1/2 9 8 Uncoated 26
    $86.84
  • A51713 ACT 0.1415 0.135 1 4 4 Uncoated 14
    $25.66
  • A50357 ACT #7 0.2010 0.2010 1 3 1-3/4 0.0250 4 Uncoated 37
    $56.07
  • A78729 ACT .3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated 16
    $31.08
  • A52663 ACT 3/4 0.7500 0.624 2-1/2 9 8 Uncoated 65
    $74.47
  • A51714 ACT 0.142 0.135 1 4 4 Uncoated 19
    $25.66
  • A50358 ACT 0.2020 0.2020 1 3 1-3/4 0.0250 4 Uncoated 34
    $60.00
  • A52664 ACT 0.751 O/U 0.7510 0.624 2-1/2 9 8 Uncoated 48
    $83.05
  • A51715 ACT 0.1425 0.135 1 4 4 Uncoated 14
    $25.66
  • A50359 ACT 0.2030 0.2030 1 3 1-3/4 0.0250 4 Uncoated 49
    $60.00
  • A78730 ACT 8.0mm 0.315 0.2792 1-1/2 6 6 Uncoated 24
    $32.86
  • A52665 ACT 49/64 0.7656 0.624 2-1/2 9 8 Uncoated 10
    $82.97
  • A51716 ACT 0.143 0.135 1 4 4 Uncoated 15
    $25.66
  • A50360 ACT 13/64 0.2031 0.2031 1 3 1-3/4 0.0250 4 Uncoated 13
    $54.14
  • A52666 ACT 19.5mm 0.7677 0.624 2-1/2 9 8 Uncoated 11
    $82.97
  • A51717 ACT 0.1435 0.135 1 4 4 Uncoated 14
    $25.66
  • A50361 ACT #6 0.2040 0.2040 1 3 1-3/4 0.0250 4 Uncoated 23
    $56.07
  • A78731 ACT O 0.316 0.2792 1-1/2 6 6 Uncoated 14
    $32.86
  • A52667 ACT 25/32 0.7812 0.624 2-1/2 9 8 Uncoated 16
    $80.86
  • A51718 ACT 0.1445 0.143 1 4 4 Uncoated 9
    $25.48
  • A50362 ACT 0.2050 0.2050 1 3 1-3/4 0.0250 4 Uncoated 20
    $60.00
  • A52668 ACT 20.0mm 0.7874 0.624 2-1/2 9 8 Uncoated 11
    $88.78
  • A51719 ACT 0.145 0.143 1 4 4 Uncoated 17
    $25.66
  • A50363 ACT #5 0.2055 0.2055 1 3 1-3/4 0.0250 4 Uncoated 10
    $56.07
  • A78732 ACT P 0.323 0.2792 1-1/2 6 6 Uncoated 10
    $35.13
  • A52669 ACT 51/64 0.7969 0.624 2-1/2 9 8 Uncoated 7
    $88.78
  • A51720 ACT 0.1455 0.143 1 4 4 Uncoated 14
    $25.66
  • A50364 ACT 0.2060 0.2060 1 3 1-3/4 0.0250 4 Uncoated 10
    $60.00
  • A52670 ACT 20.5mm 0.8071 0.624 2-1/2 9 8 Uncoated 5
    $88.70
  • A51721 ACT 0.146 0.143 1 4 4 Uncoated 17
    $25.66
  • A50365 ACT 0.2070 0.2070 1 3 1-3/4 0.0250 4 Uncoated 9
    $60.00
  • A78733 ACT 21/64 0.3281 0.2792 1-1/2 6 6 Uncoated 3
    $35.13
  • A52671 ACT 0.8115 O/U 0.8115 0.624 2-1/2 9 8 Uncoated 15
    $88.70
  • A51722 ACT 0.1465 0.143 1 4 4 Uncoated 15
    $25.48
  • A50366 ACT 0.2080 0.2080 1 3 1-3/4 0.0250 4 Uncoated 13
    $60.00
  • A52672 ACT 13/16 0.8125 0.624 2-1/2 9 8 Uncoated 21
    $80.61
  • A51723 ACT 0.1475 0.143 1 4 4 Uncoated 9
    $25.48
  • A50367 ACT #4 0.2090 0.2090 1 3 1-3/4 0.0250 4 Uncoated 14
    $56.07
  • A78734 ACT Q 0.332 0.2792 1-1/2 6 6 Uncoated 12
    $35.13
  • A52673 ACT 0.8135 O/U 0.8135 0.624 2-1/2 9 8 Uncoated 12
    $88.70
  • A51724 ACT 0.148 0.143 1 4 4 Uncoated 8
    $25.66
  • A50368 ACT 0.2100 0.2100 1 3 1-3/4 0.0250 4 Uncoated 10
    $60.00
  • A52674 ACT 21.0mm 0.8268 0.624 2-1/2 9-1/2 8 Uncoated 11
    $89.02
  • A51725 ACT 0.1485 0.143 1 4 4 Uncoated 15
    $25.48
  • A50369 ACT 0.2110 0.2110 1 3 1-3/4 0.0250 4 Uncoated 16
    $60.00
  • A78735 ACT 8.5mm 0.3346 0.2792 1-1/2 6 6 Uncoated 14
    $35.13
  • A52675 ACT 53/64 0.8281 0.624 2-1/2 9-1/2 8 Uncoated 13
    $88.64
  • A51726 ACT 0.149 0.143 1 4 4 Uncoated 9
    $25.66
  • A50370 ACT 0.2120 0.2120 1 3 1-3/4 0.0250 4 Uncoated 14
    $60.00
  • A52676 ACT 27/32 0.8438 0.624 2-1/2 9-1/2 8 Uncoated 7
    $95.16
  • A51727 ACT 0.15 0.146 1 4 4 Uncoated 38
    $25.66
  • A50371 ACT #3 0.2130 0.2130 1 3 1-3/4 0.0250 4 Uncoated 23
    $56.07
  • A78736 ACT R 0.339 0.2792 1-1/2 6 6 Uncoated 3
    $35.13
  • A52677 ACT 21.5mm 0.8465 0.749 2-5/8 10 8 Uncoated 12
    $103.49
  • A51728 ACT 0.1505 0.146 1 4 4 Uncoated 9
    $25.48
  • A50372 ACT 0.2140 0.2140 1 3 1-3/4 0.0250 4 Uncoated 23
    $60.00
  • A52678 ACT 55/64 0.8594 0.749 2-5/8 10 8 Uncoated 9
    $103.49
  • A51729 ACT 0.151 0.146 1 4 4 Uncoated 24
    $25.66
  • A50373 ACT 0.2150 0.2150 1 3 1-3/4 0.0250 4 Uncoated 14
    $60.00
  • A52679 ACT 22.0mm 0.8661 0.749 2-5/8 10 8 Uncoated 9
    $104.03
  • A51730 ACT 0.1515 0.146 1 4 4 Uncoated 11
    $25.66
  • A50374 ACT 0.2160 0.2160 1 3 1-3/4 0.0250 4 Uncoated 15
    $60.00
  • A78737 ACT S 0.348 0.3105 1-3/4 6 6 Uncoated 11
    $35.54
  • A52680 ACT 0.874 O/U 0.8740 0.749 2-5/8 10 8 Uncoated 11
    $103.33
  • A51731 ACT 0.1525 0.146 1 4 4 Uncoated 16
    $25.48
  • A50375 ACT 5.5mm 0.2165 5.500 1 3 44mm 0.0250 4 Uncoated 2
    $63.55
  • A52681 ACT 7/8 0.8750 0.749 2-5/8 10 8 Uncoated 25
    $97.14
  • A51732 ACT 0.153 0.146 1 4 4 Uncoated 13
    $25.66
  • A50376 ACT 0.2170 0.2170 1 3 1-3/4 0.0250 4 Uncoated 13
    $60.00
  • A78738 ACT 9.0mm 0.3543 0.3105 1-3/4 7 6 Uncoated 15
    $35.54
  • A52682 ACT 0.876 O/U 0.8760 0.749 2-5/8 10 8 Uncoated 11
    $105.80
  • A51733 ACT 0.1535 0.146 1 4 4 Uncoated 20
    $25.48
  • A50377 ACT 0.2180 0.2180 1 3 1-3/4 0.0250 4 Uncoated 8
    $60.00
  • A52683 ACT 22.5mm 0.8858 0.749 2-5/8 10 8 Uncoated 10
    $105.51
  • A51734 ACT 0.1545 0.151 1 4 4 Uncoated 14
    $25.66
  • A50378 ACT 7/32 0.2188 0.2188 1 3 1-3/4 0.0250 4 Uncoated 15
    $54.14
  • A78739 ACT T 0.358 0.3105 1-3/4 7 6 Uncoated 13
    $35.54
  • A52684 ACT 57/64 0.8906 0.749 2-5/8 10 8 Uncoated 16
    $105.51
  • A51735 ACT 0.155 0.151 1 4 4 Uncoated 21
    $25.66
  • A50379 ACT 0.2190 0.2190 1 3 1-3/4 0.0250 4 Uncoated 15
    $60.00
  • A52685 ACT 23.0mm 0.9055 0.749 2-5/8 10 8 Uncoated 12
    $105.51
  • A51736 ACT 0.1555 0.151 1 4 4 Uncoated 19
    $25.66
  • A50380 ACT 0.2200 0.2200 1 3 1-3/4 0.0250 4 Uncoated 62
    $60.00
  • A78740 ACT 23/64 0.3594 0.3105 1-3/4 7 6 Uncoated 12
    $35.67
  • A52686 ACT 29/32 0.9062 0.749 2-5/8 10 8 Uncoated 6
    $105.14
  • A51737 ACT 0.156 0.151 1 4 4 Uncoated 28
    $25.66
  • A50381 ACT #2 0.2210 0.2210 1 3 1-3/4 0.0250 4 Uncoated 46
    $56.07
  • A52687 ACT 59/64 0.9219 0.749 2-5/8 10 8 Uncoated 8
    $113.18
  • A51738 ACT 0.1565 0.151 1 4 6 Uncoated 47
    $26.76
  • A50382 ACT 0.2220 0.2220 1 3 1-3/4 0.0250 4 Uncoated 15
    $60.00
  • A78741 ACT U 0.368 0.3105 1-3/4 7 6 Uncoated 5
    $35.54
  • A52688 ACT 23.5mm 0.9252 0.749 2-5/8 10 8 Uncoated 12
    $113.18
  • A51739 ACT 0.158 0.153 1-1/8 4-1/2 6 Uncoated 31
    $26.76
  • Total: items /

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