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
    A52581 ACT L 0.2900 0.2792 1-1/2 6 6 Uncoated 38
    $32.45
  • A51632 ACT 0.0925 0.088 3/4 3 4 Uncoated 15
    $23.75
  • A50276 ACT 3.5mm 0.1378 3.500 3/4 2-1/2 35mm 0.0170 4 Uncoated 16
    $46.84
  • A53262 ACT 0.376 O/U 0.3105 0.3105 1-3/4 7 6 Uncoated 23
    $47.41
  • A53086 ACT 0.376 O/U 0.3760 0.3105 1-3/4 7 6 Uncoated 28
    $36.61
  • A52874 ACT M 0.2950 0.2792 1-1/2 6 6 Uncoated 12
    $43.92
  • A52582 ACT M 0.2950 0.2792 1-1/2 6 6 Uncoated 22
    $32.45
  • A51633 ACT 0.093 0.088 3/4 3 4 Uncoated 26
    $23.75
  • A50277 ACT 0.1380 0.1380 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 18
    $46.84
  • A53263 ACT V 0.3105 0.3105 1-3/4 7 6 Uncoated 21
    $63.12
  • A53087 ACT V 0.3770 0.3105 1-3/4 7 6 Uncoated 18
    $41.84
  • A52875 ACT 7.5mm 0.2953 0.2792 1-1/2 6 6 Uncoated 3
    $43.92
  • A52583 ACT 7.5mm 0.2953 0.2792 1-1/2 6 6 Uncoated 9
    $32.45
  • A51634 ACT 0.094 0.0928 7/8 3-1/2 4 Uncoated 48
    $23.75
  • A50278 ACT 0.1390 0.1390 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 18
    $46.84
  • A78776 ACT .1885 O/U 0.1885 0.1805 1-1/8 4-1/2 6 Uncoated 13
    $27.66
  • A53264 ACT W 0.3105 0.3105 1-3/4 7 6 Uncoated 10
    $62.92
  • A53088 ACT W 0.3860 0.3105 1-3/4 7 6 Uncoated 16
    $41.84
  • A52876 ACT 19/64 0.2969 0.2792 1-1/2 6 6 Uncoated 14
    $43.92
  • A52584 ACT 19/64 0.2969 0.2792 1-1/2 6 6 Uncoated 18
    $32.45
  • A51635 ACT 0.0945 0.0928 7/8 3-1/2 4 Uncoated 52
    $23.75
  • A50279 ACT 0.1400 0.1400 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 26
    $46.84
  • A53265 ACT 25/64 0.3105 0.3105 1-3/4 7 6 Uncoated 76
    $63.12
  • A53089 ACT 25/64 0.3906 0.3105 1-3/4 7 6 Uncoated 13
    $41.84
  • A52877 ACT N 0.3020 0.2792 1-1/2 6 6 Uncoated 23
    $43.92
  • A52585 ACT N 0.3020 0.2792 1-1/2 6 6 Uncoated 22
    $32.45
  • A51636 ACT 0.095 0.0928 7/8 3-1/2 4 Uncoated 87
    $23.75
  • A50280 ACT #28 0.1405 0.1405 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 19
    $43.92
  • A78777 ACT #12 0.189 0.1805 1-1/8 4-1/2 6 Uncoated 23
    $27.66
  • A53266 ACT 10.0mm 0.3105 0.3105 1-3/4 7 6 Uncoated 17
    $63.12
  • A53090 ACT 10.0mm 0.3937 0.3105 1-3/4 7 6 Uncoated 15
    $41.84
  • A52878 ACT 0.3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated 20
    $41.72
  • A52586 ACT 0.3115 O/U 0.3115 0.2792 1-1/2 6 6 Uncoated 64
    $30.71
  • A51637 ACT 0.0955 0.0928 7/8 3-1/2 4 Uncoated 43
    $23.75
  • A50281 ACT 9/64 0.1406 0.1406 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 24
    $42.17
  • A53267 ACT X 0.3105 0.3105 1-3/4 7 6 Uncoated 13
    $62.92
  • A53091 ACT X 0.3970 0.3105 1-3/4 7 6 Uncoated 11
    $41.84
  • A52879 ACT 5/16 0.3125 0.2792 1-1/2 6 6 Uncoated 100
    $39.50
  • A52587 ACT 5/16 0.3125 0.2792 1-1/2 6 6 Uncoated 100
    $29.35
  • A51638 ACT 0.0965 0.0928 7/8 3-1/2 4 Uncoated 16
    $23.75
  • A50282 ACT 0.1410 0.1410 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 4
    $46.84
  • A78778 ACT #11 0.191 0.186 1-1/4 5 6 Uncoated 5
    $30.92
  • A53268 ACT Y 0.3105 0.3105 1-3/4 7 6 Uncoated 11
    $63.12
  • A53092 ACT Y 0.4040 0.3105 1-3/4 7 6 Uncoated 10
    $43.41
  • A52880 ACT 0.3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated 17
    $41.72
  • A52588 ACT 0.3135 O/U 0.3135 0.2792 1-1/2 6 6 Uncoated 40
    $30.71
  • A51639 ACT 0.097 0.0928 7/8 3-1/2 4 Uncoated 24
    $23.75
  • A50283 ACT 0.1420 0.1420 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 15
    $46.84
  • A53269 ACT 13/32 0.3105 0.3105 1-3/4 7 6 Uncoated 17
    $62.92
  • A53093 ACT 13/32 0.4063 0.3105 1-3/4 7 6 Uncoated 15
    $43.41
  • A52881 ACT 8.0mm 0.3150 0.2792 1-1/2 6 6 Uncoated 32
    $43.92
  • A52589 ACT 8.0mm 0.3150 0.2792 1-1/2 6 6 Uncoated 100
    $32.45
  • A51640 ACT 0.0975 0.0928 7/8 3-1/2 4 Uncoated 12
    $23.75
  • A50284 ACT 0.1430 0.1430 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 45
    $46.84
  • A78779 ACT #10 0.1935 0.186 1-1/4 5 6 Uncoated 9
    $30.92
  • A53270 ACT Z 0.3730 0.373 1-3/4 7 6 Uncoated 9
    $63.12
  • A53094 ACT Z 0.4130 0.373 1-3/4 7 6 Uncoated 11
    $43.41
  • A52882 ACT O 0.3160 0.2792 1-1/2 6 6 Uncoated 23
    $43.92
  • A52590 ACT O 0.3160 0.2792 1-1/2 6 6 Uncoated 46
    $32.45
  • A51641 ACT 0.0985 0.0928 7/8 3-1/2 4 Uncoated 14
    $23.75
  • A50285 ACT #27 0.1440 0.1440 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 18
    $43.92
  • A53271 ACT 10.5mm 0.3730 0.373 1-3/4 7 6 Uncoated 13
    $63.12
  • A53095 ACT 10.5mm 0.4134 0.373 1-3/4 7 6 Uncoated 7
    $43.41
  • A52883 ACT P 0.3230 0.2792 1-1/2 6 6 Uncoated 15
    $47.37
  • A52591 ACT P 0.3230 0.2792 1-1/2 6 6 Uncoated 17
    $34.67
  • A51642 ACT 0.099 0.0928 7/8 3-1/2 4 Uncoated 22
    $23.75
  • A50286 ACT 0.1450 0.1450 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 19
    $46.84
  • A78780 ACT #9 0.196 0.1895 1-1/4 5 6 Uncoated 7
    $30.92
  • A53272 ACT 27/64 0.3730 0.373 1-3/4 7 6 Uncoated 14
    $63.12
  • A53096 ACT 27/64 0.4219 0.373 1-3/4 7 6 Uncoated 7
    $43.62
  • A52884 ACT 21/64 0.3281 0.2792 1-1/2 6 6 Uncoated 9
    $47.37
  • A52592 ACT 21/64 0.3281 0.2792 1-1/2 6 6 Uncoated 14
    $34.67
  • A51643 ACT 0.1 0.095 7/8 3-1/2 4 Uncoated 29
    $23.75
  • A50287 ACT 0.1460 0.1460 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 22
    $49.28
  • A53273 ACT 11.0mm 0.3730 0.373 1-3/4 7 6 Uncoated 3
    $63.12
  • A53097 ACT 11.0mm 0.4331 0.373 1-3/4 7 6 Uncoated 5
    $43.41
  • A52885 ACT Q 0.3320 0.2792 1-1/2 6 6 Uncoated 19
    $47.37
  • A52593 ACT Q 0.3320 0.2792 1-1/2 6 6 Uncoated 20
    $34.67
  • A51644 ACT 0.1005 0.095 7/8 3-1/2 4 Uncoated 13
    $23.75
  • A50288 ACT #26 0.1470 0.1470 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 24
    $46.02
  • A78781 ACT 5.0mm 0.1969 0.1895 1-1/4 5 6 Uncoated 12
    $30.92
  • A53274 ACT 0.4365 O/U 0.3730 0.373 1-3/4 7 6 Uncoated 14
    $62.92
  • A53098 ACT 0.4365 O/U 0.4365 0.373 1-3/4 7 6 Uncoated 19
    $43.62
  • A52886 ACT 8.5mm 0.3346 0.2792 1-1/2 6 6 Uncoated 4
    $47.37
  • A52594 ACT 8.5mm 0.3346 0.2792 1-1/2 6 6 Uncoated 21
    $34.67
  • A51645 ACT 0.101 0.095 7/8 3-1/2 4 Uncoated 17
    $23.75
  • A50289 ACT 0.1480 0.1480 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 16
    $49.28
  • A53275 ACT 7/16 0.3730 0.373 1-3/4 7 6 Uncoated 19
    $60.08
  • A53099 ACT 7/16 0.4375 0.373 1-3/4 7 6 Uncoated 23
    $41.52
  • A52887 ACT R 0.3390 0.2792 1-1/2 6 6 Uncoated 19
    $47.37
  • A52595 ACT R 0.3390 0.2792 1-1/2 6 6 Uncoated 10
    $34.67
  • A51646 ACT 0.102 0.095 7/8 3-1/2 4 Uncoated 13
    $23.75
  • A50290 ACT 0.1490 0.1490 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 12
    $49.28
  • A78782 ACT #8 0.199 0.1895 1-1/4 5 6 Uncoated 2
    $30.92
  • A53276 ACT 0.4385 O/U 0.3730 0.373 1-3/4 7 6 Uncoated 11
    $62.92
  • A53100 ACT 0.4385 O/U 0.4385 0.373 1-3/4 7 6 Uncoated 9
    $43.41
  • A52888 ACT 11/32 0.3438 0.2792 1-1/2 6 6 Uncoated 13
    $47.37
  • A52596 ACT 11/32 0.3438 0.2792 1-1/2 6 6 Uncoated 16
    $34.67
  • A51647 ACT 0.1025 0.095 7/8 3-1/2 4 Uncoated 12
    $23.75
  • A50291 ACT #25 0.1495 0.1495 3/4 2-1/2 1-3/8 0.0170 4 Uncoated 15
    $46.02
  • Total: items /

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