BT Tool Holders

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BT END MILL HOLDERS – INCH SIZES

		Part No.	D	D1	L	L1	Ret. Knob Thread
BT 40	STUB LENGTH Inch Sizes	B40SE0500 B40SE0625 B40SE0750 B40SE1000 B40SE1250	0.500 0.625 0.750 1.000 1.250	1.75 1.75 1.75 1.75 2.25	1.75 1.75 1.75 1.75 2.00	3.18 3.18 2.35 2.35 2.35	M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2
BT 40	STANDARD LENGTH Inch Sizes	B40E0125 B40E0187 B40E0250 B40E0312 B40E0375 B40E0437 B40E0500 B40E0625 B40E0750 B40E0875 B40E1000 B40E1250 B40E1500	0.1250 0.1875 0.2500 0.3125 0.3750 0.4375 0.5000 0.6250 0.7500 0.8750 1.0000 1.2500 1.5000	0.68 0.68 0.75 0.75 1.00 1.13 1.13 1.50 1.75 2.00 2.00 2.50 2.75	2.50 2.50 2.50 2.50 2.50 2.50 2.62 3.75 3.75 4.00 4.00 4.25 4.62	3.00 3.00 2.62 2.62 2.56 2.56 3.06 4.24 4.00 4.31 4.25 2.31 2.75	M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2
BT 50	STANDARD LENGTH Inch Sizes	B50E0375 B50E0500 B50E0625 B50E0750 B50E0875 B50E1000 B50E1250 B50E1500 B50E2000	0.375 0.500 0.625 0.750 0.875 1.000 1.250 1.500 2.000	1.00 1.25 1.50 1.75 1.88 2.00 2.50 2.62 3.75	3.00 3.00 3.00 3.00 4.00 4.00 4.00 4.62 5.25	4.00 4.00 4.00 4.00 4.18 4.44 2.75 3.50 3.50	M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3

BT END MILL HOLDERS – METRIC SIZES

		Part No.	D	D1	L	Ret. Knob Thread
BT 40	STUB LENGTH Metric Sizes	B40SE16MM B40SE20MM B40SE25MM	16 20 25	48 48 48	45 45 50	M16 X 2 M16 X 2 M16 X 2
BT 40	STANDARD LENGTH Metric Sizes	B40E06MM B40E08MM B40E10MM B40E12MM B40E16MM B40E20MM B40E25MM B40E32MM B40E40MM	6 8 10 12 16 20 25 32 40	25 28 35 42 48 52 65 72 80	65 65 65 75 95 95 100 105 115	M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2 M16 X 2
BT 50	STANDARD LENGTH Metric Sizes	B50E06MM B50E08MM B50E10MM B50E12MM B50E16MM B50E20MM B50E25MM B50E32MM B50E40MM B50E50MM	6 8 10 12 16 20 25 32 40 50	25 28 35 42 48 52 65 72 80 100	75 75 75 75 75 75 100 115 115 115	M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3 M 24 X 3

	Part No.	T Taper	D	L
BT 40	B40MT2 B40MT3 B40MT4	2 3 4	1.25 1.62 2	2.38 3.06 3.94

	Part No.	T Taper	D	L
BT 50	B50MT2 B50MT3 B50MT4 B50MT5	2 3 4 5	1.25 1.62 2 2.75	1.5 2.31 3.18 4.75

	Part No.	Taper Size	Thread
FOR MACHINES WITHOUT COOLANT THROUGH SPINDLES	C30VR C40VR C45VR C50VR	CAT30 CAT40 CAT45 CAT50	1/2 – 13 5/8 – 11 3/4 – 10 1” – 8
FOR MACHINES WITH COOLANT THROUGH SPINDLES	C30VRC C40VRC C45VRC C50VRC	CAT30 CAT40 CAT45 CAT50	1/2 – 13 5/8 – 11 3/4 – 10 1” – 8

NOTE: Retention knobs for most
machines available upon request.

Part No.	Shank Size
C40LTF C50LTF	CAT40 CAT50

Part No.	Shank	L	D	K
C30TF C40TF C45TF C50TF	30 40 45 50	3.91 4.65 4.90 6.35	3.00 3.00 3.50 4.00	0.62 0.62 0.75 1.00