nVent.com/GardnerBender | 91 Hole Making STEP BITS • Drills large holes in confined spaces. • Self-starting, self-centering drill tip. No pilot hole required. • For accurate step-by-step drilling in sheet metals. Drills through 10-gauge mild steel or stainless steel. • Double flute cutting action drills clean, round holes quickly and safely with minimum effort. • Exclusive three-lobed shank for positive, non-slip grip in drill chucks. • Made of high-speed steel for faster drilling and longer life. • Applications include junction boxes, switch boxes, metal studs, electrical appliances, lighting fixtures and many other uses. Part # Sizes Increments No. of Sizes Shank Size Step Thickness Weight SB-205 1/4 in - 3/4 in / 6.3 mm - 19 mm 1/16" 10 3/8 in / 9.5 mm 1/8 in / 3.1 mm 1 lb / 0.4 kg SB-207 3/16 in - 7/8 in / 4.7 mm - 22.2 mm 1/16" 12 3/8 in / 9.5 mm 1/8 in / 3.1 mm 1.3 lbs / 607.8 g SB-209 7/16 in - 1 1/8 in / 11.1 mm - 28.5 mm 1/16" 12 3/8 in / 9.5 mm 1/8 in / 3.1 mm 1.5 lbs / 0.6 kg SB-210 1/4 in - 1 1/2 in / 6.3 mm - 38.1 mm 1/8 in / 3.1 mm 11 1/2 in / 12.7 mm 1/8 in / 3.1 mm 1.8 lbs / 0.8 kg SB-210 SB-207 SB-209 SB-205 KNOCKOUT SEALS (1/2 IN TO 4 IN [1.2 CM TO 10.1 CM]) Easy-to-use metal knockout seal. • Fast and easy to install from inside or outside of box. • Embossed for quick self-centering in unused knockouts. One screw holds seal in place. • Made of rust-proofed, cold-rolled galvanized steel. Screw and bar are zinc-plated. • Marked for size and catalog number for easy identification. • 16-gauge steel; 3/8 in / 0.9 cm thread. • Not waterproof. Part # Package Quantity For Knockout Diameter 601 100/box 1/2 in / 12.7 mm 602 100/box 3/4 in / 19 mm 603 50/box 1 in / 25.4 mm 3/4" Package Quantity For Knockout Diameter KO701 100/box 1/2 in / 12.7 mm KO701C 5/clam 1/2 in / 12.7 mm KO702 50/box 3/4 in / 19 mm KO702C 3/clam 3/4 in / 19 mm KO703 25/box 1 in / 25.4 mm KO704 25/box 1 1/4 in / 31.7 mm KO705 10/box 1 1/2 in / 38.1 mm KO706 10/box 2 in / 50.8 mm KO707 10/box 21/2" KO708 10/box 3 in / 76.2 mm KO709 10/box 3 1/2 in / 88.9 mm KO710 10/box 4 in / 101.6 mm 601 KO701C SNAP-IN SEALS (1/2 IN TO 4 IN [1.2 CM TO 10.1 CM]) Convenient snap-in feature for quick installation. • Zinc-plated to resist corrosion. • Not waterproof. See page 84 For more info on Knockouts See page 88-89 For more info on Draw Studs
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