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Westward step drill bit with ten stepped holes and black oxide finish

Westward

Westward 6EXN5 Step Drill Bit 10 Hole 1/4 to 1-3/8 In

SKU CH-KJTB-7P3PD MPN 6EXN5

Drills 10 hole sizes from 1/4 to 1-3/8 inches using high-speed steel with oxide coating

  • TypeDrill Accessories
  • MaterialHigh Speed Steel w/Oxide Coated Finish
  • Drills ten different hole sizes with one bit
  • High-speed steel construction resists wear during repeated use
  • Black oxide finish reduces friction and heat buildup
  • Three-flat shank prevents slipping in the chuck
  • Compact three-inch length fits tight workspaces

Step Drill Bit for Progressive Hole Sizes

The Westward 6EXN5 step drill bit creates ten incrementally larger holes from 1/4 inch up to 1-3/8 inch in a single pass. Its high-speed steel body with an oxide coated finish resists wear during repetitive drilling tasks. The 3/8 inch shank with three flats locks securely in standard drill chucks. This bit suits maintenance technicians and fabricators who need multiple hole diameters without changing tools.

Behaviour Under Sustained Load

The oxide coated finish helps dissipate heat when drilling successive holes in metal sheet or plate. High-speed steel construction maintains cutting edges longer than uncoated carbon steel under continuous use. The straight flute design with three flats reduces chatter during extended drilling sessions. Maximum drilling depth is limited to 4 mm per step, so thick workpieces require multiple operations.

Practical Limits of the Shank Interface

The 3/8 inch straight shank fits most portable drill chucks but cannot transmit the torque of larger industrial taper shanks. Three flats prevent slippage yet limit compatibility with keyless chucks that rely on smooth cylindrical shanks. Overall length of 3 inches restricts reach in deep cavities or through bulky fixtures. Users needing deeper penetration or larger diameters must select a different tool.

Highlights

  • Drills ten different hole sizes with one bit
  • High-speed steel construction resists wear during repeated use
  • Black oxide finish reduces friction and heat buildup
  • Three-flat shank prevents slipping in the chuck
  • Compact three-inch length fits tight workspaces

Specifications

BrandWestward
Model6EXN5
TypeDrill Accessories
MaterialHigh Speed Steel w/Oxide Coated Finish

Questions about this item

Does the oxide coating on the High Speed Steel reduce heat build-up during prolonged drilling?

The oxide finish on the High Speed Steel helps dissipate heat and resists wear during extended use.

What shank size must my drill chuck accept to use this bit?

The bit has a 3/8 in shank with three flats, so your chuck must grip that diameter securely.

Can I use this step bit to enlarge holes in thicker steel plate?

The maximum drilling depth is 4 mm, so it is suited for sheet metal and thin plate rather than thick sections.

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