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Cobalt jobber drill bit, straw-bronze finish, split point, 135-degree angle, size Z, .4130 decimal equivalent

Westward

Westward 6PRL8 Z cobalt jobber drill bit 135° .4130

SKU CH-P045-SY4HE

Cobalt jobber drill bit with 135° split point for drilling hard metals at .4130 diameter

  • TypeAngle, Pitch & Slope Locators
  • Cobalt construction resists heat during drilling
  • 135-degree split point starts accurately without wandering
  • Jobber length suits general-purpose workshop tasks
  • Z-size letter gauge matches .4130 decimal diameter
  • New condition ensures full factory performance

Westward Cobalt Jobber Drill Bit Z

This Westward jobber length drill bit is made from cobalt steel with a 135 degree split point for reduced wandering. It suits metalworkers and maintenance technicians who need a durable bit for drilling hard materials. The straw bronze finish helps identify the tool in a busy workshop. Condition is new.

Suited for hard metal drilling not general use

The 135 degree point angle and cobalt construction are chosen for stainless steel and high alloy steels. Woodworkers or plastics fabricators should look at something else because the aggressive geometry can cause tear out. Buyers who want a coated bit for extended life in abrasive alloys will not find that feature here.

Decimal size .4130 inch letter Z

The single specification that decides fit is the decimal equivalent .4130 inch corresponding to letter size Z. Match this exact diameter to the hole chart or tap drill requirement before ordering. No other diameter or shank variation is supplied with this item.

Highlights

  • Cobalt construction resists heat during drilling
  • 135-degree split point starts accurately without wandering
  • Jobber length suits general-purpose workshop tasks
  • Z-size letter gauge matches .4130 decimal diameter
  • New condition ensures full factory performance

Specifications

BrandWestward
TypeAngle, Pitch & Slope Locators

Questions about this item

What does the 135 degree split point do for drilling?

The 135 degree split point reduces walking and starts holes cleanly in hard materials without a centre punch.

What shank size fits a standard three jaw chuck for this bit?

The jobber length shank fits any standard three jaw drill chuck that accepts up to 13 mm or half inch capacity.

How do I avoid overheating the cobalt bit when drilling stainless steel?

Run the drill at low RPM, apply steady pressure and use cutting oil to keep the cobalt temper from drawing.

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