Chucking Reamers

Chucking Reamers

Carbide - Right Hand Spiral
Carbide - Right Hand Spiral
Carbide - Straight Flute
Carbide - Straight Flute
Cobalt - Right Hand Spiral
Cobalt - Right Hand Spiral
Cobalt - Straight Flute
Cobalt - Straight Flute
HSS - Intermediate Sizes
HSS - Intermediate Sizes
HSS - Left Hand Spiral
HSS - Left Hand Spiral
HSS - Right Hand Spiral
HSS - Right Hand Spiral
HSS - Straight Flute
HSS - Straight Flute

Our Chucking Reamer selection is one of the deepest in the industry, with straight flute and spiral flute options available in HSS, Cobalt, and Carbide, and in right-hand or left-hand spiral configurations. HSS Intermediate Sizes fill in the gaps between standard fractional sizes for closer tolerance matching.

Spiral flute chucking reamers help clear chips more efficiently in blind holes and through-holes alike, while straight flute versions are often preferred for interrupted cuts like keyways. Cobalt chucking reamers offer better heat resistance for stainless and tool steel work compared to standard HSS. With over 5,000 chucking reamers in stock, USA manufactured and ready to ship same day, we're built to match your exact tolerance and material needs.

  • 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
    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 13
    $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 24
    $27.70
  • A50355 ACT #8 0.1990 0.1990 1 3 1-3/4 0.0250 4 Uncoated 38
    $62.55
  • A52661 ACT 19.0mm 0.7480 0.624 2-1/2 9 8 Uncoated 20
    $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 72
    $66.91
  • A52662 ACT 0.749 O/U 0.7490 0.624 2-1/2 9 8 Uncoated 15
    $89.88
  • A51713 ACT 0.1415 0.135 1 4 4 Uncoated 22
    $26.55
  • A50357 ACT #7 0.2010 0.2010 1 3 1-3/4 0.0250 4 Uncoated 33
    $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 36
    $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 63
    $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 47
    $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 16
    $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 13
    $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 6
    $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 5
    $91.86
  • A51720 ACT 0.1455 0.143 1 4 4 Uncoated 24
    $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 14
    $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 20
    $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 9
    $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 11
    $91.78
  • A51724 ACT 0.148 0.143 1 4 4 Uncoated 8
    $26.55
  • A50368 ACT 0.2100 0.2100 1 3 1-3/4 0.0250 4 Uncoated 10
    $66.91
  • A52674 ACT 21.0mm 0.8268 0.624 2-1/2 9-1/2 8 Uncoated 11
    $92.14
  • A51725 ACT 0.1485 0.143 1 4 4 Uncoated 15
    $26.39
  • A50369 ACT 0.2110 0.2110 1 3 1-3/4 0.0250 4 Uncoated 16
    $66.91
  • A78735 ACT 8.5mm 0.3346 0.2792 1-1/2 6 6 Uncoated 14
    $38.18
  • A52675 ACT 53/64 0.8281 0.624 2-1/2 9-1/2 8 Uncoated 13
    $91.73
  • A51726 ACT 0.149 0.143 1 4 4 Uncoated 9
    $26.55
  • A50370 ACT 0.2120 0.2120 1 3 1-3/4 0.0250 4 Uncoated 14
    $66.91
  • A52676 ACT 27/32 0.8438 0.624 2-1/2 9-1/2 8 Uncoated 16
    $98.50
  • A51727 ACT 0.15 0.146 1 4 4 Uncoated 34
    $26.55
  • A50371 ACT #3 0.2130 0.2130 1 3 1-3/4 0.0250 4 Uncoated 23
    $62.55
  • A78736 ACT R 0.339 0.2792 1-1/2 6 6 Uncoated 3
    $38.18
  • A51728 ACT 0.1505 0.146 1 4 4 Uncoated 19
    $26.39
  • A50372 ACT 0.2140 0.2140 1 3 1-3/4 0.0250 4 Uncoated 22
    $66.91
  • A51729 ACT 0.151 0.146 1 4 4 Uncoated 24
    $26.55
  • A50373 ACT 0.2150 0.2150 1 3 1-3/4 0.0250 4 Uncoated 6
    $66.91
  • A51730 ACT 0.1515 0.146 1 4 4 Uncoated 11
    $26.55
  • A50374 ACT 0.2160 0.2160 1 3 1-3/4 0.0250 4 Uncoated 15
    $66.91
  • A78737 ACT S 0.348 0.3105 1-3/4 6 6 Uncoated 11
    $38.64
  • A51731 ACT 0.1525 0.146 1 4 4 Uncoated 16
    $26.39
  • A50375 ACT 5.5mm 0.2165 5.500 1 3 44mm 0.0250 4 Uncoated 18
    $70.88
  • A51732 ACT 0.153 0.146 1 4 4 Uncoated 13
    $26.55
  • A50376 ACT 0.2170 0.2170 1 3 1-3/4 0.0250 4 Uncoated 13
    $66.91
  • A78738 ACT 9.0mm 0.3543 0.3105 1-3/4 7 6 Uncoated 15
    $38.64
  • A51733 ACT 0.1535 0.146 1 4 4 Uncoated 20
    $26.39
  • A50377 ACT 0.2180 0.2180 1 3 1-3/4 0.0250 4 Uncoated 17
    $66.91
  • A51734 ACT 0.1545 0.151 1 4 4 Uncoated 14
    $26.55
  • A50378 ACT 7/32 0.2188 0.2188 1 3 1-3/4 0.0250 4 Uncoated 100
    $60.40
  • A78739 ACT T 0.358 0.3105 1-3/4 7 6 Uncoated 13
    $38.64
  • A51735 ACT 0.155 0.151 1 4 4 Uncoated 19
    $26.55
  • A50379 ACT 0.2190 0.2190 1 3 1-3/4 0.0250 4 Uncoated 14
    $66.91
  • A51736 ACT 0.1555 0.151 1 4 4 Uncoated 18
    $26.55
  • A50380 ACT 0.2200 0.2200 1 3 1-3/4 0.0250 4 Uncoated 55
    $66.91
  • A78740 ACT 23/64 0.3594 0.3105 1-3/4 7 6 Uncoated 12
    $38.76
  • A51737 ACT 0.156 0.151 1 4 4 Uncoated 19
    $26.55
  • A50381 ACT #2 0.2210 0.2210 1 3 1-3/4 0.0250 4 Uncoated 35
    $62.55
  • A51738 ACT 0.1565 0.151 1 4 6 Uncoated 44
    $27.70
  • A50382 ACT 0.2220 0.2220 1 3 1-3/4 0.0250 4 Uncoated 16
    $66.91
  • A78741 ACT U 0.368 0.3105 1-3/4 7 6 Uncoated 5
    $38.64
  • A51739 ACT 0.158 0.153 1-1/8 4-1/2 6 Uncoated 46
    $27.70
  • A50383 ACT 0.2230 0.2230 1 3 1-3/4 0.0250 4 Uncoated 9
    $66.91
  • A51740 ACT 0.1585 0.153 1-1/8 4-1/2 6 Uncoated 40
    $27.70
  • A50384 ACT 0.2240 0.2240 1 3 1-3/4 0.0250 4 Uncoated 19
    $66.91
  • A78742 ACT .374 O/U 0.374 0.3105 1-3/4 7 6 Uncoated 15
    $36.61
  • A51741 ACT 0.1595 0.153 1-1/8 4-1/2 6 Uncoated 16
    $27.70
  • A50385 ACT 0.2250 0.2250 1 3 1-3/4 0.0250 4 Uncoated 14
    $66.91

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

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