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Cleveland Golf #30 HSS extension drill bit, 12 inch bright finish

Cleveland Golf

Cleveland Golf C13241 #30x12 In HSS pneumatic accessory

SKU CH-RHXY-FV0YK MPN C13241

Extra-long #30 HSS drill bit, 12 in overall, 135-degree split point for accurate starts

  • Product typeDrill Accessories
  • Main materialHigh speed steel
  • Extra reach with 12 inch overall length
  • Precise starts from 135 degree split point
  • Hard-wearing high speed steel construction
  • Accurate wire-gauge #30 sizing
  • Versatile 21 to 34 degree helix angle

Extension drill for aircraft maintenance

The Cleveland Golf C13241 is a #30 size extension drill built from high-speed steel for precision drilling tasks. It targets mechanics and technicians who need accurate hole-making in aerospace or general fabrication work.

Bright uncoated finish with split-point geometry

The 135-degree split point reduces walking and improves centering without a centre punch. The bright uncoated surface suits general-purpose drilling where coating buildup could affect fit in tight tolerance holes.

12-inch overall length for deep reach

The 12-inch length allows access to recessed or hard-to-reach fastener locations common in aircraft structures. Buyers needing shorter drill bits or different diameter sizes should select another model.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 91% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCleveland
Model nameC13241
Product typeDrill Accessories
Size & build
Main materialHigh speed steel

Questions about this item

How often will the #30 High Speed Steel bit need replacing when used at the 135 degree split point?

The 135 degree split point on this High Speed Steel bit reduces wandering and heat buildup, extending life in wire and sheet metal up to 1/2 in depth; replace when cutting edges dull or the split point wears round.

What limits continuous drilling depth with the 12 in overall length?

The fluted section is designed for a maximum drilling depth of 1/2 in; the remaining 12 in length provides reach through deep structures, not deeper cutting capacity.

Does the bright uncoated finish run hotter than coated bits during all-day use?

The bright High Speed Steel finish dissipates heat less efficiently than coated variants, so sustained drilling at the 135 degree point angle will generate more heat; use cutting fluid and allow cooling pauses.

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