taper pin helical reamer

HSS TAPER PIN REAMER

HELIX FLUTE, RIGHT HAND CUT, FRACTIONAL SIZE

　　Taper pin reamers are made with a taper of 1/4" per foot. Taper pin reamers are used to ream holes into which standard taper pins will fits. The point of each taper pin reamer will enter hole reamed by next smaller size. Hole to be reamed should a few thousandths smaller than the small diameter of the finished reamed hole.

Helix flute designed for improve chip remove in blind holes.

Size Number	Shank Diameter (in.)	Diameter Small End	Diameter Large End	Length Overall (in.)	Length Flute (in.)
7/0	5/64	.0497	.0666	1-13/16	13/16
6/0	3/32	.0611	.0806	1-15/16	15/16
5/0	7/64	.0719	.0966	2-3/16	1-3/16
4/0	1/8	.0869	.1142	2-5/16	1-5/16
3/0	9/64	.1029	.1302	2-5/16	1-5/16
2/0	5/32	.1137	.1462	2-9/16	1-9/16
0	11/64	.1287	.1638	2-15/16	1-11/16
1	3/16	.1447	.1798	2-15/16	1-11/16
2	13/64	.1605	.2008	3-3/16	1-15/16
3	15/64	.1813	.2294	3-11/16	2-5/16
4	17/64	.2071	.2604	4-1/16	2-9/16
5	5/16	.2409	.2994	4-5/16	2-13/16
6	23/64	.2773	.3540	5-7/16	3-11/16
7	13/32	.3297	.4220	6-5/16	4-7/16
8	7/16	.3971	.5050	7-3/16	5-3/16
9	9/16	.4805	.6066	8-5/16	6-1/16
10	5/8	.5799	.7216	9-5/16	6-13/16