Industrial bi-metal cobalt hole saws High speed cobalt steel teeth are electron beam welded to a steel body. This process enables teeth to cut faster and stay sharper than standard teeth. High alloy steel body is shatter resistant for superior durability. 4/6 variable pitch reduces vibration and heat generation for smooth cutting. Positive rake teeth offer better chip clearance. Cutting depth 1-1/2". Cuts holes in wood, plywood, plastic, or any machinable metal, including: nail-embedded wood, pipe, stainless steel etc. TYPE A HOSA 62590

 

 

Made in U.S.A.

Industrial bi-metal cobalt hole saws High speed cobalt steel teeth are electron beam welded to a steel body. This process enables teeth to cut faster and stay sharper than standard teeth. High alloy steel body is shatter resistant for superior durability. 4/6 variable pitch reduces vibration and heat generation for smooth cutting. Positive rake teeth offer better chip clearance. Cutting depth 1-1/2". Cuts holes in wood, plywood, plastic, fiberboard, or any machinable metal, including: nail-embedded wood, pipe, stainless steel, etc. TYPE B HOSA62591

 

 

Dia	Pipe tap size	Pipe ent. size	R.P.M. steel	R.P.M. iron
1-1/4			275	180
1-3/8		1	250	165
1-1/2	1-1/4		230	150
1-5/8			210	140
1-3/4	1-1/2	1-1/4	195	130
1-7/8			180	120
2		1-1/2	170	115
2-1/8			160	105
2-1/4	2		150	100
2-3/8			140	95
2-1/2		2	135	90
2-5/8	2-1/2		130	85
2-3/4			125	80
2-7/8			120	80
3		2-1/2	115	75

Made in U.S.A.

High Speed Cobalt Steel teeth are electron beam welded to a steel body. This process enables teeth to cut faster and stay sharper than standard teeth. High alloy steel body is shatter resistant for superior durability. 4/6 teeth per inch variable pitch reduces vibration and heat generation for smooth cutting. Positive rake teeth offer better chip clearance. Cutting depth 1-1/2". Cuts holes in wood, plywood, plastic, fiberborad, or any machinable metal, including: nail-embedded wood, pipe, stainless steel, etc. Use with your power drill or drill press

 

 

DIA	PIPE TAP SIZE	PIPE ENT. SIZE	R.P.M. STEEL	R.P.M. IRON
5/8			550	365
3/4		3/8	460	300
7/8	3/4	1/2	390	260
1			350	235
1-1/8	1	3/4	300	200
1-1/4			275	180
1-3/8		1	250	165
1-1/2			230	150
1-3/4	1-1/2	1-1/4	195	130
1-7/8			180	120
2		1-1/2	170	115
2-1/8			160	105
2-1/4	2		150	100
2-3/8			140	95
2-1/2		2	135	90
2-5/8	2-1/2		130	85
2-3/4			125	80
2-7/8			120	80
3		2-1/2	115	75
3-1/4	3		105	70
3-1/2			95	65
3-3/4	3-1/2		90	60
4			85	55
4-1/2		4	75	50
5			65	45
5-1/2			60	40
6			55	35

 

 

 

Made in U.S.A.

 

 

Dia	Use Arbor Type	Pipe Tap Size	Pipe Ent. Size
3/4	TYPE A - HOSA62590		3/8
7/8	TYPE A - HOSA62590	3/4	1/2
1	TYPE A - HOSA62590
1-1/8	TYPE A - HOSA62590	1	3/4
1-1/4	TYPE B - HOSA62591
1-3/8	TYPE B - HOSA62591		1
1-1/2	TYPE B - HOSA62591	1-1/4
1-5/8	TYPE B - HOSA62591
1-3/4	TYPE B - HOSA62591	1-1/2	1-1/4
1-7/8	TYPE B - HOSA62591
2	TYPE B - HOSA62591		1-1/2
2-1/8	TYPE B - HOSA62591
2-1/4	TYPE B - HOSA62591	2
2-3/8	TYPE B - HOSA62591
2-1/2	TYPE B - HOSA62591		2
2-5/8	TYPE B - HOSA62591	2-1/2
2-3/4	TYPE B - HOSA62591
2-7/8	TYPE B - HOSA62591
3	TYPE B - HOSA62591		2-1/2
3-1/4	TYPE B - HOSA62591	3
3-1/2	TYPE B - HOSA62591
3-3/4	TYPE B - HOSA62591	3-1/2
4	TYPE B - HOSA62591
4-1/2	TYPE B - HOSA62591		4
4-3/4	TYPE B - HOSA62591	4-1/2
5	TYPE B - HOSA62591
5-1/2	TYPE B - HOSA62591
6	TYPE B - HOSA62591

 

Most used for applications in the automotive, construction and manufacturing industries. Contains 1 hole saw each: 7/8", 1", 1-1/8", 1-1/4", 1-1/2" Kit also includes 1 arbor.

 

 

 

 

8 pc. Plumber's Kit in strong molded plastic case. Designed for plumbers. This kit contains pipe tap sizes for pipe through 2". Contains 1 hole saw each: 3/4", 7/8", 1-1/8", 1-1/2", 1-3/4", 2-1/4". Kit also includes 2 arbors.

 

 

8 Pc. Electrician's Kit in strong molded plastic case. Designed for electricians. This kit contains pipe entrance sizes for pipe and conduit through 2". Contains 1 hole saw each: 7/8", 1-1/8", 1-3/8", 1-3/4", 2", 2-1/2". Kit also includes 2 arbors.