Page 126 - Q4 2025 Stephenson Equipment Catalogue

DRILL BITS, STEP DRILL BITS, FASTENER EXTRACTORS

Step Drill Bits

KNK-3KK4SR P
3-Pc Step Drill Bit & Reamer Set
IRW-15502 $200 95 • 5/16" - 9/16", 9/16" - 13/16", 13/16" - 1-1/16" Made in
USA
• 90° notch point starts holes easily
3-Pc Titanium Step Drill Bit Set • 5 hole enlargement steps
• Size #1T: 1/8" – 1/2" (1/32" steps) • 3/8" shank with 3 flats
13 hole sizes
• Size #2T: 3/16" – 1/2" (1/16" steps)
6 hole sizes Vari-Bit® Step Drill Bits
• Size #3T: 1/4" – 3/4" (1/16" steps)
9 hole sizes Item # Sizes
3/16" – 7/8"
LEN-30908VB8 4.8 – 22.22mm $107.25
1/2" – 1"
LEN-30882VB2 12.5 – 25mm $95.65
7/8" – 1-3/8"
LEN-30912VB12 22.2 – 35mm $146.75 30908VB8 30882VB2 30912VB12
IRW-10502ZR $154 05

3-Pc Self Starting Step Drill Bit Set
Contains:
• Size #1: 1/8" to 1/2"
• Size #2: 3/16" to 1/2" 10232 10233
• Size #3: 1/4" to 3/4" 10234
10231 15101ZR 10235

ATD-9200 $137 05
5-Pc Step Drill Bit Set
• Tri-flat shank design for a sure
grip in the chuck without slippage 10311ZR 10312ZR 10313ZR
Set includes: 10310 10220 10221
• 1/4" shank: 3/16" to 1/2" holes in 1/16" steps
• 1/4" shank: 1/8" to 1/2" holes in 1/32" steps High Speed Steel Step Drills
• 3/8" shank: 1/4" to 3/4" holes in 1/16" steps
• 3/8" shank: 3/16" to 7/8" holes in 1/16" steps Item # Description # of Hole Hex
• 3/8" shank: 1/4" to 1-3/8" holes in 1/8" steps Sizes Shank
IRW-10231 #1 1/8"–1/2" (1/32" steps) 13 1/4" $41.75
1/8"–1/2" (1/32" steps)
IRW-15101ZR #1 Titanium 13 1/4" $55.65
High Speed Steel Step Drill Bits $41.75
• Speed start tip prevents bit walking IRW-10232 #2 3/16"–1/2" (1/16" steps) 6 1/4"
• 1/4" hex shank IRW-10233 #3 1/4"–3/4" (1/16" steps) 9 3/8" $75.25
IRW-10234 #4 3/16"–7/8" (1/16" steps) 12 3/8" $88.95
Item # Size Steps 7/16" $157.65
MLW-48-89-9201 1/8" – 1/2" 13 $41.35 IRW-10235 #5 1/4"–1-3/8" (1/8" steps) 10 $40.55
MLW-48-89-9203 1/4" – 3/4" 9 $64.45 IRW-10310 #10 1/2" 1 1/4" $83.55
MLW-48-89-9204 3/16" – 7/8" 12 $64.85 IRW-10311ZR #11 7/8" 1 3/8" $32.55
1/4"
MLW-48-89-9208 1/2" – 1" 9 $85.45 IRW-10312ZR #12 3/8" 1 7/16" $107.55
MLW-48-89-9211 7/8" – 1-7/32" 13 $112.95 IRW-10313ZR #13 1-1/8" 1
IRW-10220 #20 9/16"–1" (hole enlarging) 8 7/16" $86.05
IRW-10221 #21 13/16"–1-3/8" (hole enlarging) 10 7/16" $174.75

High Speed Steel Step Drill Bits 16504
MLW-48-89-9221 $165 35 • Titanium finish
3-Pc JAM-FREE Performance • 1/4" hex shank
Step Drill Bit Set Item # Size Steps 16503
• Optimized for cordless drills
in high speed TIT-16504 1/4" – 3/4" 9 $25.45
• Rapid Strike™ tip • Black oxyde finish 3-Piece Set:
• #1 – 1/8" - 1/2" by 1/32" – 13 steps TIT-16503 1/8" – 1/2" 13 $43.65
• #2 – 3/16" - 1/2" by 1/16" – 6 steps 3/16" – 1/2" 6
• #4 – 3/16" - 7/8" by 1/16" – 12 steps 1/4" – 3/4" 9

126 | October – December 2025