Threaded Button Bits

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Rock drilling bits

This threaded button bits are made to create holes with a large diameter. It has threads and, through the threads, can be connected to different threaded drill rods, like both shank rods and extension rods, drifter rods, MF rods and guide rods.

The thread size of the button bits range from R22, R25, R32, R35, SR35, R38, T38, T45, T51, ST58 and ST68.

Threaded Rock Drill Bits	D		Buttons × Button Diameter		Gauge Button Angle	Thread
Button Bits	mm	inch	Gauge button	Face button	Gauge Button Angle	Thread
	48 51	1 7/8 2	5×11 5×12	2×9 2×10	35° 35°	R35 R35
	48 51	1 7/8 2	5×11 5×12	2×9 2×10	35° 35°	R35 R35
	48 51 54	1 7/8 2 2 1/5	6×10 6×10 6×11	3×9 3×9 3×10	30° 35° 30°	R35 R35 R35
	48 51	1 7/8 2	6×10 6×10	3×9 3×9	30° 35°	R35 R35
	48	1 7/8	6×10	3×9	30°	R35
	89	3 1/2	9×12	6×11	35°	T51
	64 70 76 89	2 1/2 2 3/4 3 3 1/2	8×10 8×11 8×11 9×11	4×10 6×10 6×10 6×10	30° 35° 35° 35°	T38 T38 T38 T38
	64 79	2 1/2 3	8×10 8×10	4×10 6×10	35° 40°	T38 T38