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Chicago-Latrobe 40484 extension drill bit 13/32 inch HSS black oxide split point 135 degree

Chicago-Latrobe

Chicago-Latrobe 40484 Extension Drill 13/32 in HSS Black Oxide 135 deg

SKU CH-R325-DDTQ4

A 13/32 inch high-speed steel extension drill bit with a 135-degree split point and black oxide finish

  • Product typeDrill Bits
  • 13/32 inch diameter drills precise holes
  • 135-degree split point starts fast with less wandering
  • High-speed steel construction resists wear in tough materials
  • Black oxide finish reduces friction and adds corrosion protection
  • 6-inch overall length reaches deep or awkward spots

Chicago-Latrobe 40484 Extension Drill

This Chicago-Latrobe 40484 extension drill is a high-speed steel bit with a black oxide finish. It suits machinists and maintenance technicians who need to reach deeper holes in metal. The fractional 13/32 inch size matches specific bolt or tap requirements. It is not for buyers who need a shorter jobber length or a different diameter.

135 Degree Split Point Installation

The 135 degree split point design allows the bit to start on contact without a centre punch. This reduces walking on hard steel surfaces during initial engagement. The black oxide coating helps retain lubricant and resists corrosion. Users must ensure the shank fits their drill chuck capacity before starting.

13/32 Inch Decimal Equivalent .4063

The critical specification is the 13/32 inch diameter with a decimal equivalent of .4063. This exact size determines compatibility with the intended fastener or reamer. Verify the required hole size against your engineering drawing before purchase. The high-speed steel construction supports general-purpose ferrous metal drilling.

How it compares

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

Price $19.99
Cheaper than about 64% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits

Questions about this item

How can I verify the 135 degree split point is cutting correctly after installing the 40484 bit?

The split point should self-centre and produce short, curled chips in steel without walking when you start the hole.

What comes with the 40484 extension drill and what must I supply?

The package contains the 13/32 inch HSS black-oxide jobber bit only; you provide the drill motor and any chuck adapter required.

Which drill bit specification should I select for a .4063 inch hole?

Choose the 13/32 inch, 135 degree split-point high-speed steel bit with black-oxide finish.

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