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Full Specification

Type

Wedge Anchor

Diameter

5/8"

Available Lengths

3-1/2", 4-1/2", 5", 6", 8", 10"

Pilot Hole Diameter

5/8"

Pilot Hole Depth

Embedment + 1/2" clearance

Embedment Depth

2-3/4" minimum

Recommended Torque

75-90 ft-lbs

Compatible Substrates

Solid concrete only

Load Rating

937 lbs tension, 1,550 lbs shear safe working load — Ultimate: 3,749 lbs tension / 6,198 lbs shear — Ultimate values in 2000 PSI concrete (Confast). Allowable calculated at the industry-standard 4:1 safety factor.

Material

Zinc-plated steel, Hot-dip galvanized, 316 Stainless steel

Removable

No — permanent installation

Best For

✓Heavy structural steel connections
✓Industrial machinery
✓Overhead crane rails
✓Bridge and highway applications

Not For

✗Hollow block
✗Brick
✗Residential applications (oversized)
✗Thin slabs

How a Wedge Anchor Grips

A wedge anchor grips by flaring an expansion clip against the hole wall as the nut is torqued, converting clamping tension into outward friction. Unlike a self-tapping screw, the hole is drilled at the anchor's own diameter, and grip quality depends heavily on a clean, correctly-sized, dust-free hole.

Installation Tips

1.Requires an SDS-Max rotary hammer — SDS-Plus cannot reliably drill 5/8" in hard concrete

2.Minimum edge distance: 3-1/8" (5× diameter)

3.Minimum anchor spacing: 6-1/4" (10× diameter)

4.Torque to exactly 95 ft-lbs — use a calibrated torque wrench for structural applications

5.Engineer review required for seismic SDC C and above

Frequently Asked Questions

What size drill bit does a 5/8" Wedge Anchor need?

Use a 5/8" carbide masonry bit, drilled to embedment + 1/2" clearance.

How much weight can a 5/8" Wedge Anchor hold?

937 lbs tension, 1,550 lbs shear safe working load. Actual capacity depends on base material strength and embedment — verify against the manufacturer's ICC-ES ESR data for structural work.