Chucking Reamers
Carbide - Right Hand Spiral
Carbide - Straight Flute
Cobalt - Right Hand Spiral
Cobalt - Straight Flute
HSS - Intermediate Sizes
HSS - Left Hand Spiral
HSS - Right Hand Spiral
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.
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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 A50644 ACT 0.4520 0.4520 1-3/8 4 2-1/4 0.0450 6 Uncoated 9 $171.77 -
A50645 ACT 11.5mm 0.4528 11.500 1-3/8 4 57mm 0.0450 6 Uncoated 10 $171.77 -
A50646 ACT 0.4530 0.4530 1-3/8 4 2-1/4 0.0450 6 Uncoated 24 $157.38 -
A50647 ACT 29/64 0.4531 0.4531 1-3/8 4 2-1/4 0.0450 6 Uncoated 16 $137.18 -
A50648 ACT 0.4540 0.4540 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $171.77 -
A50649 ACT 0.4550 0.4550 1-3/8 4 2-1/4 0.0450 6 Uncoated 9 $171.77 -
A50650 ACT 0.4560 0.4560 1-3/8 4 2-1/4 0.0450 6 Uncoated 11 $171.77 -
A50651 ACT 0.4570 0.4570 1-3/8 4 2-1/4 0.0450 6 Uncoated 10 $171.77 -
A50652 ACT 0.4580 0.4580 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $171.77 -
A50653 ACT 0.4590 0.4590 1-3/8 4 2-1/4 0.0450 6 Uncoated 12 $171.77 -
A50654 ACT 0.4600 0.4600 1-3/8 4 2-1/4 0.0450 6 Uncoated 5 $171.77 -
A50655 ACT 0.4610 0.4610 1-3/8 4 2-1/4 0.0450 6 Uncoated 15 $171.77 -
A50656 ACT 0.4620 0.4620 1-3/8 4 2-1/4 0.0450 6 Uncoated 10 $171.77 -
A50657 ACT 0.4630 0.4630 1-3/8 4 2-1/4 0.0450 6 Uncoated 7 $171.77 -
A50658 ACT 0.4640 0.4640 1-3/8 4 2-1/4 0.0450 6 Uncoated 14 $171.77 -
A50659 ACT 0.4650 0.4650 1-3/8 4 2-1/4 0.0450 6 Uncoated 18 $171.77 -
A50660 ACT 0.4660 0.4660 1-3/8 4 2-1/4 0.0450 6 Uncoated 5 $171.77 -
A50661 ACT 0.4670 0.4670 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $171.77 -
A50662 ACT 0.4680 0.4680 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $172.55 -
A50663 ACT 15/32 0.4688 0.4688 1-3/8 4 2-1/4 0.0450 6 Uncoated 13 $137.18 -
A50664 ACT 0.4690 0.4690 1-3/8 4 2-1/4 0.0450 6 Uncoated 9 $181.00 -
A50665 ACT 0.4700 0.4700 1-3/8 4 2-1/4 0.0450 6 Uncoated 13 $181.00 -
A50666 ACT 0.4710 0.4710 1-3/8 4 2-1/4 0.0450 6 Uncoated 13 $181.00 -
A50667 ACT 0.4720 0.4720 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $181.82 -
A50668 ACT 12.0mm 0.4724 12.000 1-3/8 4 57mm 0.0450 6 Uncoated 13 $189.30 -
A50669 ACT 0.4730 0.4730 1-3/8 4 2-1/4 0.0450 6 Uncoated 16 $181.82 -
A50670 ACT 0.4740 0.4740 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $181.00 -
A50671 ACT 0.4750 0.4750 1-3/8 4 2-1/4 0.0450 6 Uncoated 8 $181.00 -
A50672 ACT 0.4760 0.4760 1-1/2 4 2-1/4 0.0450 6 Uncoated 12 $181.82 -
A50673 ACT 0.4770 0.4770 1-1/2 4 2-1/4 0.0450 6 Uncoated 8 $181.00 -
A50674 ACT 0.4780 0.4780 1-1/2 4 2-1/4 0.0450 6 Uncoated 9 $181.00 -
A50675 ACT 0.4790 0.4790 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $181.00 -
A50676 ACT 0.4800 0.4800 1-1/2 4 2-1/2 0.0450 6 Uncoated 5 $181.00 -
A50677 ACT 0.4810 0.4810 1-1/2 4 2-1/2 0.0450 6 Uncoated 6 $181.00 -
A50678 ACT 0.4820 0.4820 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $181.00 -
A50679 ACT 0.4830 0.4830 1-1/2 4 2-1/2 0.0450 6 Uncoated 2 $181.00 -
A50680 ACT 0.4840 0.4840 1-1/2 4 2-1/2 0.0450 6 Uncoated 15 $181.00 -
A50681 ACT 31/64 0.4844 0.4844 1-1/2 4 2-1/2 0.0450 6 Uncoated 13 $155.57 -
A50682 ACT 0.4850 0.4850 1-1/2 4 2-1/2 0.0450 6 Uncoated 8 $181.00 -
A50683 ACT 0.4860 0.4860 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $181.00 -
A50684 ACT 0.4870 0.4870 1-1/2 4 2-1/2 0.0450 6 Uncoated 6 $218.16 -
A50685 ACT 0.4880 0.4880 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $218.16 -
A50686 ACT 0.4890 0.4890 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $218.16 -
A50687 ACT 0.4900 0.4900 1-1/2 4 2-1/2 0.0450 6 Uncoated 9 $218.16 -
A50688 ACT 0.4910 0.4910 1-1/2 4 2-1/2 0.0450 6 Uncoated 5 $218.16 -
A50689 ACT 0.4920 0.4920 1-1/2 4 2-1/2 0.0450 6 Uncoated 3 $218.16 -
A50690 ACT 12.5mm 0.4921 12.500 1-1/2 4 63mm 0.0450 6 Uncoated 6 $236.91 -
A50691 ACT 0.4930 0.4930 1-1/2 4 2-1/2 0.0450 6 Uncoated 10 $218.16 -
A50692 ACT 0.4940 0.4940 1-1/2 4 2-1/2 0.0450 6 Uncoated 6 $218.16 -
A50693 ACT 0.4950 0.4950 1-1/2 4 2-1/2 0.0450 6 Uncoated 6 $218.16 -
A50694 ACT 0.4960 0.4960 1-1/2 4 2-1/2 0.0450 6 Uncoated 12 $218.16 -
A50695 ACT 0.4970 0.4970 1-1/2 4 2-1/2 0.0450 6 Uncoated 13 $218.16 -
A50696 ACT 0.4980 0.4980 1-1/2 4 2-1/2 0.0450 6 Uncoated 38 $218.16 -
A50697 ACT 0.4990 0.4990 1-1/2 4 2-1/2 0.0450 6 Uncoated 19 $218.16 -
A50698 ACT 0.4995 0.4995 1-1/2 4 2-1/2 0.0450 6 Uncoated 11 $218.16 -
A50699 ACT 1/2 0.5000 0.5000 1-1/2 4 2-1/2 0.0450 6 Uncoated 20 $169.67 -
A50700 ACT 0.5005 0.5005 1-1/2 4 2-1/2 0.0450 6 Uncoated 35 $236.91 -
A50701 ACT 0.5010 0.5010 1-1/2 4 2-1/2 0.0450 6 Uncoated 26 $236.91 -
A50702 ACT 0.5020 0.5020 1-1/2 4 2-1/2 0.0450 6 Uncoated 19 $236.91 -
A52448 ACT 1.0005 0.874 2-3/4 10-1/2 8 Uncoated 17 $176.46 -
A52449 ACT 1.0015 0.874 2-3/4 10-1/2 8 Uncoated 15 $176.46 -
A52450 ACT 1.002 0.874 2-3/4 10-1/2 8 Uncoated 14 $176.46 -
A52451 ACT 1.0025 0.874 2-3/4 10-1/2 8 Uncoated 16 $176.46 -
A52452 ACT 1.003 0.874 2-3/4 10-1/2 8 Uncoated 17 $176.46