Klein Tools 9-Step Drill Bit 3/8-Inch Hex with AlTiN Coating 1/4-Inch to 3/4-Inch Professional Drilling System

Klein Tools 9-Step Drill Bit 3/8-Inch Hex with AlTiN Coating 1/4-Inch to 3/4-Inch Professional Drilling System

Professional step drilling solution with advanced coating technology

Klein Tools delivers professional-grade drilling performance with this 9-step drill bit featuring 3/8-inch hex shank and aluminum titanium nitride coating. Engineered for versatile applications on steel up to 16 gauge, wood, plastic, and aluminum, this high-speed steel bit provides precise hole sizing from 1/4-inch to 3/4-inch in 1/16-inch increments. The durable hex shank ensures positive grip without spinning, while the double straight flute design removes chips for clean cuts and efficient drilling.

Professional Features & Benefits

• 9-Step Size Range: Covers 1/4-inch to 3/4-inch in precise 1/16-inch increments for versatile hole sizing without multiple bits
• Aluminum Titanium Nitride Coating: Provides 10 times more durability than steamed black oxide coating for extended bit life and superior performance
• 3/8-Inch Hex Shank: Delivers firm, positive grip in drill chucks and prevents spinning out during operation
• Double Straight Flute Design: Efficiently removes chips and debris for clean cuts and smooth drilling action
• High Speed Steel Construction: Ensures durability and maintains sharp cutting edges across multiple materials
• Fast-Starting Non-Walking Tip: Provides precise hole placement and eliminates bit wandering on material surfaces
• Laser Markings: Enable quick size identification for efficient workflow and accurate hole sizing

Technical Specifications

• Coating: Aluminum Titanium Nitride (AlTiN)
• Department: Electrical
• Depth: 4.7700 in
• Flute Type: Straight
• Height: 0.1800 in
• Increment: 1/16" (1.6 mm)
• Material: High Speed Steel
• Number Of Holes: 9
• Overall Height: 2.8" (7.1 cm)
• Overall Length: 0.75" (1.9 cm)
• Overall Width: 0.75" (1.9 cm)
• Product Details: Step Drill Bit
• Product Group: Hand Tools
• Product Size: 1/4" to 3/4" (6.4 to 19.1 mm)
• Product Subgroup: Screwdrivers & Drivers
• Product Type: Step Drill Bit
• Quick Reference: #3
• Shank Type: 3/8" Hex
• Weight: 0.1500 lbs
• Width: 3.0600 in

Installation & Operation

1. Mount the bit securely in a drill chuck, ensuring the 3/8-inch hex shank is properly seated and tightened.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Electrical installations and panel work
• HVAC system installations
• Plumbing and mechanical applications
• General construction and maintenance
• Automotive and fabrication work
• Professional trade applications
• Industrial maintenance operations

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade reliability with high-speed steel construction and advanced aluminum titanium nitride coating technology. The precision laser markings and durable 3/8-inch hex shank design ensure consistent performance across demanding applications, while the 9-step sizing capability provides versatile drilling solutions for professional tradespeople and contractors.