We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Chicago-Latrobe 43620 5/16 inch jobber drill bit with gold TiCN coating

Chicago-Latrobe

Chicago-Latrobe 43620 135 Degree Heavy-Duty Jobber Length Drill Bit

SKU CH-1ZBD-8XGQT

A 5/16 inch jobber-length drill bit with a 135-degree split point made from high-speed steel with TiCN coating

  • Product typeDrill Bits
  • Main materialHAWA
  • 135-degree split point starts holes cleanly without walking
  • 5/16 inch high-speed steel body resists heat during heavy use
  • TiCN coating extends cutting life in tough materials
  • Jobber length design reaches standard drilling depths easily
  • Decimal equivalent .3125 matches precise fractional specifications

Chicago-Latrobe 43620 5/16 in Drill Bit

This Chicago-Latrobe 43620 jobber-length drill bit has a 5/16 in diameter and a 135 degree split point. It is made from high-speed steel with a TiCN coating for wear resistance. The fractional-inch sizing suits general-purpose drilling in metal and plastic. The 0.3125 decimal equivalent matches standard tooling requirements.

Metalworkers needing a 135 degree split point

This bit suits machinists and fabricators who require a self-centering point for accurate hole starts in ferrous and non-ferrous materials. The TiCN coating extends life in repetitive production drilling. Builders who need coolant-through capability or a different point angle should look at alternative designs.

135 degree split point geometry

The 135 degree split point reduces thrust force and prevents walking on hard surfaces. This geometry is the critical specification that determines whether the bit matches the application. Verify the point angle against your process requirements before ordering.

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 nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

What does the 135-degree point angle mean when I start drilling?

The 135-degree split point reduces walking and starts the cut quickly on hard materials, so the bit centres itself without a centre punch.

How does the TiCN coating affect cutting performance and tool life?

TiCN increases surface hardness and heat resistance, allowing higher cutting speeds and longer edge life in steel and stainless compared with uncoated high-speed steel.

Will the 5/16-inch shank fit my standard drill chuck?

Yes, the jobber-length bit has a straight 5/16-inch shank that fits any three-jaw chuck rated for that capacity or larger.

More in Bits, Hole Saws & Accessory Kits

Similar items