Toggle Bolt
3/8" Toggle Bolt (Hollow Wall Anchor)
3/8" toggle bolt specs: 1-1/4" pilot hole, 450-700 lbs shear, for hollow CMU block and hollow masonry. Heavier capacity hollow wall anchor with 3/8" bolt.
Diameter
3/8"
Pilot Hole
1-1/4" (for toggle wings)
Embedment
N/A — requires hollow cavity
Torque
20 in-lbs
Free Tool \u00b7 ACI 318-19 Compliant
Need this spec\u2019d for your exact load and substrate?
These specs are general reference values. Get the exact anchor diameter, embedment, and edge distance for your specific project.
Try the Anchor Spec Engine →Full Specification
Type
Toggle Bolt
Diameter
3/8"
Available Lengths
1-1/2", 2", 3", 4"
Pilot Hole Diameter
1-1/4" (for toggle wings)
Pilot Hole Depth
Through-wall
Embedment Depth
N/A — requires hollow cavity
Recommended Torque
20 in-lbs
Compatible Substrates
Hollow concrete block (CMU), Hollow brick, Hollow wall
Max Load Rating
450-700 lbs (shear), 200-350 lbs (tension) — depends on wall thickness
Material
Zinc-plated steel
Removable
No — permanent installation
Best For
- ✓Heavy fixtures on hollow CMU
- ✓Wall-mounted equipment on hollow block
- ✓Larger signs on hollow masonry
Not For
- ✗Solid concrete
- ✗Solid masonry
- ✗Applications requiring bolt removal
Installation Tips
1.Requires a 1-1/4" hole — use a masonry hole saw or SDS hammer with appropriate bit
2.Larger toggle means more contact area — significantly higher capacity than 1/4" toggle
3.Thread the bolt through your fixture BEFORE inserting the toggle — you cannot add the fixture later
4.SNAPTOGGLE 3/8" is a better option if bolt removal may ever be needed
Where to Buy
As an Amazon Associate, BuildToolHQ earns from qualifying purchases. Specifications are for guidance only \u2014 always verify against the anchor manufacturer's ICC-ES ESR report and local building codes.