ITM
3/16" x 3" Right Hand Hard Steel Drill Bit, Carbide TipRHB-20
$7.58$12.22/ea · 5 or more
In stockHard Steel Drill Bits
Products14
BrandITM
Quick answer
ITM carbide-tipped drill bits for steel that stalls ordinary HSS bits, in right-hand and left-hand versions from 1/8" to 1/2". ANSI specification, plus 5-piece sets from 1/8" to 3/8".
ITM
3/8" x 6" Right Hand Hard Steel Drill Bit, Carbide TipRHB-32
$10.38$16.73/ea · 4 or more
In stock
ITM
5-Piece Right Hand Hard Steel Drill Bit Set, Carbide Tip, 1/8" to 3/8"RHB-SET5
$42.74$68.86/ea
In stock
ITM
3/8" x 6" Left Hand Hard Steel Drill Bit, Carbide TipLHB-32
$13.21$21.29/ea · 3 or more
In stock
ITM
1/8" x 3" Right Hand Hard Steel Drill Bit, Carbide TipRHB-18
$6.79$10.94/ea · 6 or more
In stock
ITM
1/2" x 6" Left Hand Hard Steel Drill Bit, Carbide TipLHB-50
$23.32$37.57/ea · 2 or more
In stock
ITM
3/16" x 3" Left Hand Hard Steel Drill Bit, Carbide TipLHB-20
$9.25$14.90/ea · 4 or more
In stock
ITM
5/16" x 4" Left Hand Hard Steel Drill Bit, Carbide TipLHB-26
$11.12$17.92/ea · 4 or more
In stock
ITM
5/16" x 4" Right Hand Hard Steel Drill Bit, Carbide TipRHB-26
$9.37$15.10/ea · 4 or more
In stock
ITM
5-Piece Left Hand Hard Steel Drill Bit Set, Carbide Tip, 1/8" to 3/8"LHB-SET5
$51.69$83.28/ea
In stock
ITM
1/4" x 4" Left Hand Hard Steel Drill Bit, Carbide TipLHB-22
$10.26$16.53/ea · 4 or more
In stock
ITM
1/2" x 6" Right Hand Hard Steel Drill Bit, Carbide TipRHB-50
$20.24$32.61/ea · 2 or more
In stock
ITM
1/4" x 4" Right Hand Hard Steel Drill Bit, Carbide TipRHB-22
$8.60$13.86/ea · 5 or more
In stockChoosing a hard steel bit
These ITM bits have a carbide tip for drilling hardened steel and other material that dulls standard high-speed steel. Sizes run 1/8", 3/16", 1/4", 5/16", 3/8" and 1/2" in 3", 4" and 6" lengths, all to ANSI specification. Right-hand and left-hand versions are both offered, along with 5-piece sets from 1/8" to 3/8".
Drilling tips
Go slow. Hard steel needs low speed, firm steady pressure and cutting oil on the tip. Clamp the work and keep the drill square, because carbide is hard but brittle and a side load can chip the edge. These are not hammer-drill bits, so turn hammer action off.
Left-hand bits cut with the drill in reverse. Installers use them when they want a fastener to back out as they drill.
Free shipping on orders over $200. Trade accounts can reorder in a click from My Toolbox, or call (833) 438-6657.
Hardened steel and tough stockRight-hand carbide-tip bits
1/8" x 3" up to 1/2" x 6". The standard direction for normal drilling.
Seized or broken fastenersLeft-hand carbide-tip bits
The same sizes cutting in reverse, so a stuck fastener can back out as you drill.
Sizes for the truck5-piece sets, 1/8" to 3/8"
Available in right-hand and left-hand versions, for the sizes used most.
Common questions
What are hard steel bits for?
They have a carbide tip for drilling hardened steel and other material that stalls standard HSS bits. Use low speed, firm pressure and cutting oil.
What is the difference between left-hand and right-hand?
Right-hand bits cut with the drill running forward. Left-hand bits cut with the drill in reverse, which helps when drilling out a fastener that might otherwise tighten or stay put.
Can I use them in a hammer drill?
No. They are for rotary drilling in steel. Turn hammer action off, drill at low speed and keep the bit square to the work.
Buying for a crew?
Call 833-438-6657, 8 AM to 4 PM MST. We know the parts, not just the part numbers.