3/4" S&D Black Oxide Drill Bit

The Milwaukee 48-89-2746 is a 3/4" Silver & Deming (S&D) black oxide drill bit, and it’s the largest size in the series you’ve been working through. It’s built for heavy-duty, large-diameter drilling in metal, wood, and plastic.

Key Features

• 135° split point tip – starts on contact and prevents walking for accurate drilling
• Black oxide coating – reduces friction and helps resist corrosion
• Parabolic flute design – clears chips quickly for faster, cooler drilling
• 1/2" reduced shank (3-flat Secure-Grip) – fits standard drill chucks securely
• Heavy-duty web construction – adds strength for deep, large holes

(These specs are confirmed directly in manufacturer listings and distributor specs )

Specs

• Size: 3/4 in
• Shank: 1/2" reduced (S&D style)
• Material: High-speed steel (HSS)
• Finish: Black oxide
• Overall length: ~6 in
• Use: Metal, wood, PVC, plastics

Best Uses

• Very large structural bolt holes
• Steel fabrication and heavy construction
• Thick timber / beam drilling
• HVAC, plumbing, and mechanical installs
• Any job requiring maximum hole size with a standard 1/2" drill chuck

Bottom Line

The 48-89-2746 is a heavy-duty S&D drill bit for big structural holes, not a standard twist drill. It’s designed for maximum diameter drilling while still working in a regular drill, which is why it uses a reduced shank instead of a full 3/4" round shank.