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
    A51742 ACT 0.16 0.153 1-1/8 4-1/2 6 Uncoated 44
    $27.70
  • A50386 ACT 0.2260 0.2260 1 3 1-3/4 0.0250 4 Uncoated 19
    $73.35
  • A51743 ACT 0.1605 0.153 1-1/8 4-1/2 6 Uncoated 81
    $27.70
  • A50387 ACT 0.2270 0.2270 1 3 1-3/4 0.0250 4 Uncoated 5
    $73.35
  • A78743 ACT .376 O/U 0.376 0.3105 1-3/4 7 6 Uncoated 7
    $36.61
  • A51744 ACT 0.1615 0.1595 1-1/8 4-1/2 6 Uncoated 13
    $27.70
  • A50388 ACT #1 0.2280 0.2280 1 3 1-3/4 0.0250 4 Uncoated 66
    $68.77
  • A51745 ACT 0.162 0.1595 1-1/8 4-1/2 6 Uncoated 24
    $27.70
  • A50389 ACT 0.2290 0.2290 1 3 1-3/4 0.0250 4 Uncoated 19
    $68.52
  • A78744 ACT V 0.377 0.3105 1-3/4 7 6 Uncoated 20
    $41.84
  • A51746 ACT 0.1625 0.1595 1-1/8 4-1/2 6 Uncoated 19
    $27.70
  • A50390 ACT 0.2300 0.2300 1 3 1-3/4 0.0250 4 Uncoated 17
    $73.35
  • A51747 ACT 0.163 0.1595 1-1/8 4-1/2 6 Uncoated 18
    $27.70
  • A50391 ACT 0.2310 0.2310 1 3 1-3/4 0.0250 4 Uncoated 18
    $73.35
  • A78745 ACT W 0.386 0.3105 1-3/4 7 6 Uncoated 11
    $41.84
  • A51748 ACT 0.1635 0.1595 1-1/8 4-1/2 6 Uncoated 25
    $27.70
  • A50392 ACT 0.2320 0.2320 1 3 1-3/4 0.0250 4 Uncoated 12
    $73.35
  • A51749 ACT 0.164 0.1595 1-1/8 4-1/2 6 Uncoated 46
    $27.70
  • A50393 ACT 0.2330 0.2330 1 3 1-3/4 0.0250 4 Uncoated 6
    $73.35
  • A78746 ACT 25/64 0.3906 0.3105 1-3/4 7 6 Uncoated 13
    $41.84
  • A51750 ACT 0.1645 0.1595 1-1/8 4-1/2 6 Uncoated 20
    $27.70
  • A50394 ACT A 0.2340 0.2340 1 3 1-3/4 0.0250 4 Uncoated 31
    $73.35
  • A51751 ACT 0.165 0.1595 1-1/8 4-1/2 6 Uncoated 18
    $27.70
  • A50395 ACT 15/64 0.2344 0.2344 1 3 1-3/4 0.0250 4 Uncoated 11
    $65.97
  • A78747 ACT 10.0mm 0.3937 0.3105 1-3/4 7 6 Uncoated 14
    $41.84
  • A51752 ACT 0.1655 0.1595 1-1/8 4-1/2 6 Uncoated 17
    $27.70
  • A50396 ACT 0.2350 0.2350 1 3 1-3/4 0.0250 4 Uncoated 15
    $73.35
  • A51753 ACT 0.1665 0.1595 1-1/8 4-1/2 6 Uncoated 18
    $27.70
  • A50397 ACT 0.2360 0.2360 1 3 1-3/4 0.0250 4 Uncoated 21
    $73.35
  • A78748 ACT X 0.397 0.3105 1-3/4 7 6 Uncoated 13
    $41.84
  • A51754 ACT 0.167 0.1595 1-1/8 4-1/2 6 Uncoated 20
    $27.70
  • A50398 ACT 6.0mm 0.2362 6.000 1 3 44mm 0.0250 4 Uncoated 25
    $70.17
  • A51755 ACT 0.1675 0.1595 1-1/8 4-1/2 6 Uncoated 8
    $27.70
  • A50399 ACT 0.2370 0.2370 1 3 1-3/4 0.0250 4 Uncoated 22
    $73.35
  • A78749 ACT Y 0.404 0.3105 1-3/4 7 6 Uncoated 3
    $43.41
  • A51756 ACT 0.168 0.1595 1-1/8 4-1/2 6 Uncoated 11
    $27.70
  • A50400 ACT B 0.2380 0.2380 1 3 1-3/4 0.0250 4 Uncoated 17
    $73.35
  • A51757 ACT 0.1685 0.1595 1-1/8 4-1/2 6 Uncoated 18
    $27.70
  • A50401 ACT 0.2390 0.2390 1 3 1-3/4 0.0250 4 Uncoated 22
    $73.35
  • A78750 ACT 13/32 0.4063 0.3105 1-3/4 7 6 Uncoated 12
    $43.41
  • A51758 ACT 0.169 0.1595 1-1/8 4-1/2 6 Uncoated 18
    $27.70
  • A50402 ACT 0.2400 0.2400 1 3 1-3/4 0.0250 4 Uncoated 11
    $73.35
  • A51759 ACT 0.17 0.1645 1-1/8 4-1/2 6 Uncoated 22
    $27.70
  • A50403 ACT 0.2410 0.2410 1 3 1-3/4 0.0250 4 Uncoated 11
    $73.35
  • A78751 ACT Z 0.413 0.373 1-3/4 7 6 Uncoated 10
    $43.41
  • A51760 ACT 0.1705 0.1645 1-1/8 4-1/2 6 Uncoated 12
    $27.70
  • A50404 ACT C 0.2420 0.2420 1 3 1-3/4 0.0250 4 Uncoated 12
    $73.35
  • A51761 ACT 0.171 0.1645 1-1/8 4-1/2 6 Uncoated 23
    $27.70
  • A50405 ACT 0.2430 0.2430 1 3 1-3/4 0.0250 4 Uncoated 15
    $73.35
  • A78690 ACT 10.5mm 0.4134 0.373 1-3/4 7 6 Uncoated 3
    $43.41
  • A51762 ACT 0.1715 0.1645 1-1/8 4-1/2 6 Uncoated 16
    $27.70
  • A50406 ACT 0.2440 0.2440 1 3 1-3/4 0.0250 4 Uncoated Available to Order*
    $73.35
  • A51763 ACT 0.172 0.1645 1-1/8 4-1/2 6 Uncoated 16
    $26.05
  • A50407 ACT 0.2450 0.2450 1 3 1-3/4 0.0250 4 Uncoated 24
    $73.35
  • A78691 ACT 27/64 0.4219 0.373 1-3/4 7 6 Uncoated 12
    $43.62
  • A51764 ACT 0.1725 0.1645 1-1/8 4-1/2 6 Uncoated 20
    $26.05
  • A50408 ACT D 0.2460 0.2460 1 3 1-3/4 0.0250 4 Uncoated 20
    $73.35
  • A51765 ACT 0.1735 0.1704 1-1/8 4-1/2 6 Uncoated 14
    $26.05
  • A50409 ACT 0.2470 0.2470 1 3 1-3/4 0.0250 4 Uncoated 10
    $73.35
  • A78692 ACT 11.0mm 0.4331 0.373 1-3/4 7 6 Uncoated 13
    $43.41
  • A51766 ACT 0.174 0.1704 1-1/8 4-1/2 6 Uncoated 15
    $26.05
  • A50410 ACT 0.2480 0.2480 1 3 1-3/4 0.0250 4 Uncoated 18
    $73.35
  • A51767 ACT 0.1745 0.1704 1-1/8 4-1/2 6 Uncoated 5
    $26.05
  • A50411 ACT 0.2485 0.2485 1 3 1-3/4 0.0250 4 Uncoated 18
    $82.46
  • A78693 ACT .4365 O/U 0.4365 0.373 1-3/4 7 6 Uncoated 12
    $43.62
  • A51768 ACT 0.175 0.1704 1-1/8 4-1/2 6 Uncoated 16
    $26.05
  • A50412 ACT 0.2490 0.2490 1 3 1-3/4 0.0250 4 Uncoated 41
    $73.35
  • A51769 ACT 0.1755 0.1704 1-1/8 4-1/2 6 Uncoated 22
    $26.05
  • A50413 ACT 0.2495 0.2495 1 3 1-3/4 0.0250 4 Uncoated 79
    $77.96
  • A51770 ACT 0.176 0.1704 1-1/8 4-1/2 6 Uncoated 19
    $26.05
  • A50414 ACT 1/4 0.2500 0.2500 1 3 1-3/4 0.0250 4 Uncoated Available to Order*
    $65.97
  • A78694 ACT .4385 O/U 0.4385 0.373 1-3/4 7 6 Uncoated 6
    $43.41
  • A51771 ACT 0.1765 0.1704 1-1/8 4-1/2 6 Uncoated 10
    $25.97
  • A50415 ACT 0.2505 0.2505 1 3 1-3/4 0.0250 4 Uncoated 100
    $77.96
  • A51772 ACT 0.1775 0.1755 1-1/8 4-1/2 6 Uncoated 19
    $26.05
  • A50416 ACT 0.2510 0.2510 1 3 1-3/4 0.0250 4 Uncoated 46
    $73.35
  • A78695 ACT 11.5mm 0.4528 0.373 1-3/4 7 6 Uncoated 14
    $47.41
  • A51773 ACT 0.178 0.1755 1-1/8 4-1/2 6 Uncoated 28
    $26.05
  • A50417 ACT 0.2515 0.2515 1 3 1-3/4 0.0250 4 Uncoated 22
    $91.61
  • A51774 ACT 0.1785 0.1755 1-1/8 4-1/2 6 Uncoated 11
    $25.97
  • A50418 ACT 0.2520 0.2520 1 3 1-3/4 0.0250 4 Uncoated 30
    $73.35
  • A78696 ACT 29/64 0.4531 0.373 1-3/4 7 6 Uncoated 13
    $47.57
  • A51775 ACT 0.179 0.1755 1-1/8 4-1/2 6 Uncoated 29
    $26.05
  • A50419 ACT 0.2530 0.2530 1 3 1-3/4 0.0250 4 Uncoated 100
    $73.35
  • A51776 ACT 0.1795 0.1755 1-1/8 4-1/2 6 Uncoated 11
    $26.05
  • A50420 ACT 0.2540 0.2540 1 3 1-3/4 0.0250 4 Uncoated 25
    $73.35
  • A51777 ACT 0.1805 0.1755 1-1/8 4-1/2 6 Uncoated 16
    $26.05
  • A50421 ACT 0.2550 0.2550 1 3 1-3/4 0.0250 6 Uncoated 19
    $73.35
  • A78697 ACT 12.0mm 0.4724 0.4355 2 8 6 Uncoated 13
    $47.41
  • A51778 ACT 0.181 0.1755 1-1/8 4-1/2 6 Uncoated 62
    $26.05
  • A50422 ACT 6.5mm 0.2559 6.500 1-1/8 3-1/4 47mm 0.0300 6 Uncoated 8
    $77.63
  • A51779 ACT 0.1815 0.1755 1-1/8 4-1/2 6 Uncoated 15
    $26.05
  • A50423 ACT 0.2560 0.2560 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 11
    $89.43
  • A78698 ACT 31/64 0.4844 0.4355 2 8 6 Uncoated 2
    $47.41
  • A51780 ACT 0.1825 0.1805 1-1/8 4-1/2 6 Uncoated 16
    $25.97
  • A50424 ACT F 0.2570 0.2570 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 31
    $89.43
  • A51781 ACT 0.183 0.1805 1-1/8 4-1/2 6 Uncoated 24
    $26.05
  • A50425 ACT 0.2580 0.2580 1-1/8 3-1/4 1-7/8 0.0300 6 Uncoated 50
    $89.43
  • A78699 ACT 12.5mm 0.4921 0.4355 2 8 6 Uncoated 3
    $47.41
  • A51782 ACT 0.1835 0.1805 1-1/8 4-1/2 6 Uncoated 14
    $25.97

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

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