Alfa Tools General Product Catalog

Cobalt Bi-Metal Hole Saw Kits

Specialty Bi-Metal Variable Pitch Hole Saw Kits

7 Pc. Mechanic’s Kit Stock # HOSA7 in strong molded plastic case • Most used for applications in the automotive, construction and manufacturing industries Contains one hole saw each: 7/8", 1", 1-1/8", 1-1/4", 1-1/2" Kit also includes 1 drill and 1 arbor.

8 Pc. Plumber’s Kit Stock # HOSA8P in strong molded plastic case

• Designed for plumbers. • This kit contains pipe tap sizes for pipe through 2" Contains one hole saw each: 3/4", 7/8", 1-1/8", 1-1/2", 1-3/4", 2-1/4" Kit also includes 2 arbors.

Cobalt Bi-Metal Hole Saw Kits

A

13 Pc. Maintenance Kit Stock # HOSA13 in strong molded plastic case • Designed for plumbers, electricians, industrial and general purpose maintenance • This kit contains 9 plumbing and electrical sizes for pipe and conduit through 2" Contains one hole saw each: 3/4", 7/8", 1-1/8", 1-3/8", 1-1/2", 1-3/4", 2", 2-1/4" and 2-1/2" Kit also includes 3 arbors and 12" extension.

8 Pc. Electrician’s Kit Stock # HOSA8E in strong molded plastic case

• Designed for electricians. • This kit contains pipe entrance sizes for pipe and conduit through 2" Contains one hole saw each: 7/8", 1-1/8", 1-3/8", 1-3/4", 2", 2-1/2" Kit also includes 2 arbors.

Bi-Metal Hole Saw Cutting Speeds in RPM

Size Mild Steel 580 550 460 390 350 300 275 250 230 11/16" 500 13/16" 425 15/16" 370 1-1/16" 325 1-3/16" 285 1-5/16" 260 1-7/16" 240 3/4" 7/8" 1" 1-1/8" 1-1/4" 1-3/8" 1-1/2" Inches 9/16" 5/8"

Cast Tool &

Size

Mild Steel

Cast Tool &

Size

Mild Steel 115 110 105 100

Cast Tool &

Brass Alum.

Brass Alum.

Brass Alum.

Iron 400 365 330 300 280 260 245 235 215 200 190 180 175 165 160 150

S.S. 300 275 250 230 210 195 185 175 160 150 145 140 135 125 120 115

Inches

Iron 145 140 135 130 125 120 115 110 105 100 100 95 90 85 85 80 80

S.S. 110 105 100 95 95 90 85 80 80 75 75 70 65 65 65 60 60

Inches

Iron

S.S.

790 730 665 600 560 520 495 470 435 400 380 360 345 330 315 300

900 825 750 690 635 585 555 525 480 450 425 410 390 375 360 345

1-9/16" 220 1-11/16" 205 1-13/16" 190 1-5/8" 1-3/4"

290 280 270 260 250 240 230 220 210 200 195 190 180 175 170 160 160

330 315 305 295 285 270 255 245 240 225 225 220 205 200 195 185 180

75 70 70 65 65 60 60 60 55 55 55 50 50 45 40 35 35

55 55 50 50 45 45 45 45 40 40 40 35 35 30 25 25 25

150 140 140 130 130 120 120 120 110 110 110 100 95 90 85 75 75

170 165 155 150 145 140 135 135 130 120 120 105 95 90 85 75 75

3"

210 195 180 170 160 150 140 135 130 125 120

3-1/8" 3-1/4" 3-3/8" 3-1/2" 3-5/8" 3-3/4" 3-7/8" 4-1/8" 4-1/4" 4-1/2" 4-3/4" 5-1/2" 5-3/4" 4" 5"

95 95 90 90 85 80 80 75 75 65 60 55 55

1-7/8"

2"

2-1/16" 165

2-1/8" 2-1/4" 2-3/8" 2-1/2" 2-5/8" 2-3/4" 2-7/8"

2-5/16" 145

2-9/16" 130

6"

A-91