ITM
3/8" SDS-Plus Stop Drill Bit for 1/4" Drop-In AnchorsSTP-617
$16.76$28.86/ea · 3 or more
In stockSDS-Plus Anchor & Concrete Screw Bits
Products10
BrandITM
Quick answer
ITM SDS-Plus stop drill bits sized for drop-in anchors, from 1/4" to 1", plus a nail-in anchor driver and an adapter. Most are carbide-tipped with a stop lip, for electricians and anchor installers.
ITM
1/2" SDS-Plus Stop Drill Bit for 3/8" Drop-In AnchorsSTP-827
$19.55$33.67/ea · 2 or more
In stock
ITM
5/8" SDS-Plus Stop Drill Bit for 1/2" Drop-In AnchorsSTP-1033
$23.78$40.96/ea · 2 or more
In stock
ITM
1/4" SDS-Plus Stop Drill Bit for 3/16" Drop-In AnchorsSTP-413
$15.39$26.51/ea · 3 or more
In stock
ITM
5/8" SDS-Plus Stop Drill Bit for 1/2" Short Drop-In AnchorsSTP-1019
$20.93$36.05/ea · 2 or more
In stock
ITM
1/2" SDS-Plus Stop Drill Bit for 3/8" Short Drop-In AnchorsSTP-813
$18.62$32.07/ea · 2 or more
In stockChoosing an anchor setting bit
Drop-in anchors need the right hole diameter and a repeatable depth. These ITM SDS-Plus stop drill bits are sized for specific drop-in anchors, and most have a stop lip and meet the ANSI specification. Each title names the anchor it is sized for, so you do not have to work it out on the ladder.
Choosing the bit
Pick by anchor size. A 1/4" bit is for 3/16" drop-in anchors, 3/8" for 1/4", 1/2" for 3/8", 5/8" for 1/2", 7/8" for 5/8" and 1" for 3/4". Short anchors have their own bits, so match the title.
Drill with hammer action on an SDS-Plus rotary hammer until the stop lip meets the surface, then blow out the dust before you set the anchor. The range also has a 1/4" x 9" SDS-Plus nail-in anchor driver and an SDS-Max to SDS-Plus adapter.
Free shipping on orders over $200. Trade accounts can reorder in a click from My Toolbox, or call (833) 438-6657.
1/4" to 3/8" drop-in anchors1/4", 3/8" and 1/2" stop drill bits
Sized for 3/16", 1/4" and 3/8" drop-in anchors. The 1/2" bit is listed for both standard and short 3/8" anchors.
1/2" to 3/4" drop-in anchors5/8", 7/8" and 1" stop drill bits
Sized for 1/2", 5/8" and 3/4" drop-in anchors, with a short 1/2" anchor option in 5/8".
Setting nail-in anchorsSDS-Plus nail-in anchor driver
1/4" x 9" driver for setting nail-in anchors with a rotary hammer.
Broader SDS-Plus toolingSDS-Plus drill bits
Standard SDS-Plus drill bits from 5/32" up, for general anchor and fixture holes.See the range →Common questions
Which bit do I need for a 1/2" drop-in anchor?
A 5/8" SDS-Plus stop drill bit. There are separate listings for the standard and short 1/2" drop-in anchors, so read the title before you order.
What does the stop lip do?
It limits the depth of the hole. When the lip meets the surface you have drilled to the right depth for the anchor, so every hole is the same.
Do these need a rotary hammer?
Yes. They are SDS-Plus bits for a rotary hammer with hammer action on. An SDS-Max to SDS-Plus adapter is in the collection if you run an SDS-Max tool.
Know-how for SDS-Plus Anchor & Concrete Screw Bits
All guides →
Buying for a crew?
Call 833-438-6657, 8 AM to 4 PM MST. We know the parts, not just the part numbers.