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Silver cylindrical cobalt drill bit split point 135° .3970

Cleveland

Cleveland Jobber Drill Bit X Cobalt C16452 135° .3970

SKU CH-9YXW-8SZ44

A cobalt jobber drill bit with a 135-degree split point and TiCN coating for drilling hard materials, sized at .3970 inches

  • Product typeDrill Accessories
  • Main materialHAWA
  • Cobalt construction resists heat and wear
  • 135° split point starts holes accurately without wandering
  • TiCN coating reduces friction and extends cutting life
  • Jobber length suits general-purpose drilling in metal
  • .3970 decimal size matches letter X specification

Cleveland Cobalt Jobber Drill Bit X

This Cleveland jobber drill bit in size X is built from cobalt steel with a TiCN coating for extended wear resistance. The 135 degree split point reduces walking and starts holes cleanly in hard materials. It suits mechanics and metalworkers who need a durable bit for repetitive drilling in stainless steel or high-strength alloys. Buyers who require coolant-through capability or a different point angle will need another tool.

Decimal .3970 Letter Size with TiCN Finish

The decimal equivalent of .3970 corresponds to letter size X, giving a precise reference for tap drill charts and engineering drawings. TiCN coating increases surface hardness and lowers friction compared with uncoated cobalt, helping the bit run cooler during prolonged cuts. The jobber length provides standard reach for general-purpose machine or handheld use. Users needing extra-long reach or a specialised substrate should look elsewhere.

How it compares

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

Price $34.99
Pricier than about 57% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCleveland
Product typeDrill Accessories
Size & build
Main materialHAWA

Questions about this item

How often will the split-point tip need resharpening under regular use?

The 135-degree split point reduces walking and heat, extending intervals between sharpening compared with standard points.

What temperature limit appears first during sustained drilling in stainless steel?

The TiCN coating raises surface hardness and heat resistance, delaying the onset of tip degradation under continuous high-speed cuts.

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