Anchors/5/8" Epoxy Adhesive Anchor

Epoxy Anchor

5/8" Epoxy Adhesive Anchor

Quick Answer

A 5/8" Epoxy Anchor needs a 3/4" pilot hole, drilled to 5-5/8" minimum (9× diameter), with 5-5/8" minimum embedment, torqued to 70 ft-lbs (after cure).

Pilot Hole

3/4"

Embedment

5-5/8" minimum

Torque

70 ft-lbs (after cure)

Safe Load

Where to Buy

Code-listed

SET-3G High-Strength Epoxy Anchoring Adhesive, 8.5 oz Cartridge

ICC-ES ESR-4057 · cracked + uncracked · seismic A-F

★ 4.2 (20)Code-listed

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Budget pick

Quickmast AE15 Concrete Epoxy for Rebar and Rods, 10.1 fl oz

Epoxy acrylate · 10.1 fl oz · 4-10 min work time

★ 4.6 (175)

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As an Amazon Associate, BuildToolHQ earns from qualifying purchases. Specifications are for guidance only — always verify against the anchor manufacturer's ICC-ES ESR report and local building codes.

Full Specification

Type

Epoxy Anchor

Diameter

5/8"

Available Lengths

Threaded rod cut to length

Pilot Hole Diameter

3/4"

Pilot Hole Depth

5-5/8" minimum (9× diameter)

Embedment Depth

5-5/8" minimum

Recommended Torque

70 ft-lbs (after cure)

Compatible Substrates

Solid concrete, Cracked concrete, Hollow block (with screen tube), Stone

Load Rating

15,000+ lbs (tension) at full embedment in 4000 psi concrete

Material

Epoxy adhesive + A307 or A193 threaded rod

Removable

No — permanent installation

Best For

✓Heavy structural post-installed anchors
✓Seismic retrofit
✓Bridge and infrastructure
✓Rebar splicing and doweling
✓Industrial equipment bases

Not For

✗Temperatures below 40°F without cold-weather system
✗Sustained high temperature (>110°F) without HTE-rated epoxy
✗Underwater without underwater epoxy

How a Epoxy Anchor Grips

An epoxy anchor bonds a threaded rod to the base material chemically rather than mechanically, transferring load through the full surface of the drilled hole. Cure time matters: loading the rod before the adhesive reaches full cure is the most common cause of failure.

Installation Tips

1.3-step hole cleaning is critical: blow, brush, blow — skip this and capacity drops 30-50%

2.Use a calibrated adhesive dispenser — mix ratio must be correct or epoxy won't cure properly

3.Full cure at 70°F is typically 24 hours — check TDS for your specific product

4.Engineer specification required for all structural applications

5.Diamond core drill produces better hole geometry than hammer drilling for critical applications

Frequently Asked Questions

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

Use a 3/4" carbide masonry bit, drilled to 5-5/8" minimum (9× diameter).

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

15,000+ lbs (tension) at full embedment in 4000 psi concrete. Actual capacity depends on base material strength and embedment — verify against the manufacturer's ICC-ES ESR data for structural work.