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ETA A4 Bi-Metal Concrete Screw Anchors

ETA A4 Bi-Metal Concrete Screw Anchors - Sheh Kai

Product Overview

ETA A4 Bi-Metal Concrete Screw Anchors

Corrosion-Resistant Anchoring Solutions for Demanding Environments.

A4 Bi-Metal Concrete Anchors combine hardened drilling performance with A4 stainless steel corrosion resistance for professional concrete fastening applications.

Available in HWH, Pan, and Flat Head styles to support different installation and architectural requirements.

Designed for outdoor, coastal, and corrosion-critical environments requiring reliable anchoring performance and long-term durability.

A4 Bi-Metal Concrete Anchors

Bi-Metal Technology

Unique Welding Technology

Two material characteristics are combined into one anchoring solution: stainless steel for the fastening body and a hardened cutting section for concrete engagement.

Fastening Part

A4 or A2 Austenitic Stainless Steel

To provide long-life application and reliable fastening performance.

Cutting Part

Selective hardening

To provide better cutting performance into the undercut of concrete.

Product Options

Available Head Types

Hex Washer Head A4 Bi-Metal Concrete Screw Anchor

Hex Washer Head (HWH)

Strong driving performance and wide bearing surface for brackets, plates, and strut channel fastening.

Pan Head A4 Bi-Metal Concrete Screw Anchor

Pan Head

Low-profile head design for fixtures, brackets, and light support applications.

Flat Head A4 Bi-Metal Concrete Screw Anchor

Flat Head

Countersunk head for flush installation and smooth surface finish.

Anchor Comparison

Why Choose Bi-Metal Anchors?

Feature Bi-Metal Carbon Steel Anchor Chemical Anchor
Corrosion Resistance Excellent Limited Good
Installation Speed Fast Fast Slow
Cure Time None None Required
Outdoor Use Excellent Limited Good
Fire Resistance Yes Depends Depends

Product Features

Features


✓ ETA Option 1 Approved
✓ CE Marked
✓ A4 Stainless Steel Body
✓ Bi-Metal Technology
✓ Cracked & Uncracked Concrete
✓ Seismic C1 Performance
✓ R120 fire resistance
✓ Long-Term Corrosion Resistance
✓ HWH / Pan / Flat Head Options
✓ Professional Structural Applications

Performance Benefits

Key Advantages


Superior Corrosion Resistance

Superior Corrosion Resistance

A4 stainless steel construction supports long-term durability in harsh environments.

Reliable Anchoring Performance

Reliable Anchoring Performance

Designed for secure fastening in professional concrete applications.

Flexible Head Design Options

Flexible Head Design Options

Available in HWH, Pan, and Flat Head styles for different installation requirements.

Fast & Efficient Installation

Fast & Efficient Installation

Bi-metal technology combines drilling performance with corrosion resistance.

Installation Guide

Simple 4-Step Installation

Concrete screw anchors are designed for fast and reliable installation into pre-drilled holes in concrete.

  1. Drill the specified hole downward into concrete

    STEP 1 — Drill

    Drill the hole using the specified carbide drill bit.

  2. Remove dust and debris from the drilled hole

    STEP 2 — Clean

    Remove dust and debris from the hole.

  3. Drive the concrete screw anchor through the fixture into concrete

    STEP 3 — Drive

    Drive the anchor through the fixture into the concrete.

  4. Set the anchor until its head contacts the fixture

    STEP 4 — Set

    Install until the anchor head contacts the fixture. Apply recommended torque where required.

Installation Checklist

  • Use the correct drill bit diameter.
  • Drill to the required hole depth.
  • Clean the hole before installation.
  • Install perpendicular to the fixture surface.
  • Do not over-drive the anchor.

Approved Base Materials

  • Cracked Concrete
  • Uncracked Concrete
  • Normal-Weight Concrete
  • Lightweight Concrete

Recommended Personal Protective Equipment

  • Safety Helmet
  • Safety Glasses
  • Protective Gloves
  • Dust Mask / Respirator
  • Hearing Protection
ETA A4 Bi-Metal Concrete Screw Anchors Specifications

ETA A4 Bi-Metal Concrete Screw Anchors

A4 Stainless Steel Concrete Anchor Specifications

Hex Washer Head

Swipe left or right to view the complete specification table.

Item Size
D x L
(mm) 		Drill Bit
d0
(mm) 		Embedment
Depth hnom
(mm) 		Clamping Fixture
Thickness tfix
(mm) 		Fixture Hole
Diameter
(mm) 		Installation
Socket / Torx 		Approval
SK-H6 x 75 A4 6 (6.15-6.40) 70 5 9 SW-10 ETA-16/0067Multiple Use
SK-H6 x 85 A4 6 (6.15-6.40) 70 15 9 SW-10 ETA-16/0067Multiple Use
SK-H6 x 95 A4 6 (6.15-6.40) 70 25 9 SW-10 ETA-16/0067Multiple Use
SK-H6 x 115 A4 6 (6.15-6.40) 70 45 9 SW-10 ETA-16/0067Multiple Use
SK-H6 x 140 A4 6 (6.15-6.40) 70 70 9 SW-10 ETA-16/0067Multiple Use
SK-H6 x 60/5 A4 6 (6.15-6.40) 55 5 9 SW-10 -
SK-H6 x 70/15 A4 6 (6.15-6.40) 55 15 9 SW-10 -
SK-H6 x 80/25 A4 6 (6.15-6.40) 55 25 9 SW-10 -
SK-H8 x 90 A4 8 (8.20-8.45) 85 5 11 SW-13 ETA-15/0815Option 1
SK-H8 x 100 A4 8 (8.20-8.45) 85 15 11 SW-13 ETA-15/0815Option 1
SK-H8 x 110 A4 8 (8.20-8.45) 85 25 11 SW-13 ETA-15/0815Option 1
SK-H8 x 120 A4 8 (8.20-8.45) 85 35 11 SW-13 ETA-15/0815Option 1
SK-H8 x 130 A4 8 (8.20-8.45) 85 45 11 SW-13 ETA-15/0815Option 1
SK-H8 x 150 A4 8 (8.20-8.45) 85 65 11 SW-13 ETA-15/0815Option 1
SK-H8 x 70/5 A4 8 (8.20-8.45) 65 5 11 SW-13 -
SK-H8 x 80/15 A4 8 (8.20-8.45) 65 15 11 SW-13 -
SK-H8 x 90/25 A4 8 (8.20-8.45) 65 25 11 SW-13 -
SK-H8 x 100/35 A4 8 (8.20-8.45) 65 35 11 SW-13 -
SK-H8 x 55 A4 8 (8.20-8.45) 52 3 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 57 A4 8 (8.20-8.45) 52 5 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 67 A4 8 (8.20-8.45) 52 15 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 77 A4 8 (8.20-8.45) 52 25 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 87 A4 8 (8.20-8.45) 52 35 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 55 A2 8 (8.20-8.45) 52 3 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 57 A2 8 (8.20-8.45) 52 5 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 67 A2 8 (8.20-8.45) 52 15 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 77 A2 8 (8.20-8.45) 52 25 11 SW-13 ETA-16/0067Multiple Use
SK-H8 x 87 A2 8 (8.20-8.45) 52 35 11 SW-13 ETA-16/0067Multiple Use
SK-H10 x 105 A4 10 (10.20-10.45) 100 5 13 SW-17 ETA-15/0815Option 1
SK-H10 x 115 A4 10 (10.20-10.45) 100 15 13 SW-17 ETA-15/0815Option 1
SK-H10 x 125 A4 10 (10.20-10.45) 100 25 13 SW-17 ETA-15/0815Option 1
SK-H10 x 135 A4 10 (10.20-10.45) 100 35 13 SW-17 ETA-15/0815Option 1
SK-H10 x 150 A4 10 (10.20-10.45) 100 50 13 SW-17 ETA-15/0815Option 1
SK-H10 x 80/5 A4 10 (10.20-10.45) 75 5 13 SW-17 -
SK-H10 x 90/15 A4 10 (10.20-10.45) 75 15 13 SW-17 -
SK-H10 x 100/25 A4 10 (10.20-10.45) 75 25 13 SW-17 -
SK-H10 x 110/35 A4 10 (10.20-10.45) 75 35 13 SW-17 -
SK-H12 x 125 A4 12 (12.20-12.50) 120 5 15 SW-19 ETA-15/0815Option 1
SK-H12 x 135 A4 12 (12.20-12.50) 120 15 15 SW-19 ETA-15/0815Option 1
SK-H12 x 150 A4 12 (12.20-12.50) 120 30 15 SW-19 ETA-15/0815Option 1
SK-H12 x 100/5 A4 12 (12.20-12.50) 95 5 15 SW-19 -
SK-H12 x 110/15 A4 12 (12.20-12.50) 95 15 15 SW-19 -
SK-H12 x 120/30 A4 12 (12.20-12.50) 95 30 15 SW-19 -

Pan Head

Swipe left or right to view the complete specification table.

Item Size
D x L
(mm) 		Drill Bit
d0
(mm) 		Embedment
Depth hnom
(mm) 		Clamping Fixture
Thickness tfix
(mm) 		Fixture Hole
Diameter
(mm) 		Installation
Socket / Torx 		Approval
SK-PH 6 x 75 A4 6 (6.15-6.40) 70 5 9 T-40 ETA-16/0067Multiple Use
SK-PH 6 x 85 A4 6 (6.15-6.40) 70 15 9 T-40 ETA-16/0067Multiple Use
SK-PH 6 x 95 A4 6 (6.15-6.40) 70 25 9 T-40 ETA-16/0067Multiple Use
SK-PH 6 x 115 A4 6 (6.15-6.40) 70 45 9 T-40 ETA-16/0067Multiple Use
SK-PH 6 x 140 A4 6 (6.15-6.40) 70 70 9 T-40 ETA-16/0067Multiple Use
SK-PH 6 x 60/5 A4 6 (6.15-6.40) 55 5 9 T-40 -
SK-PH 6 x 70/15 A4 6 (6.15-6.40) 55 15 9 T-40 -
SK-PH 6 x 80/25 A4 6 (6.15-6.40) 55 25 9 T-40 -
SK-PH 8 x 90 A4 8 (8.20-8.45) 85 5 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 100 A4 8 (8.20-8.45) 85 15 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 110 A4 8 (8.20-8.45) 85 25 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 120 A4 8 (8.20-8.45) 85 35 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 130 A4 8 (8.20-8.45) 85 45 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 150 A4 8 (8.20-8.45) 85 65 11 T-45 ETA-15/0815Option 1
SK-PH 8 x 70/5 A4 8 (8.20-8.45) 65 5 11 T-45 -
SK-PH 8 x 80/15 A4 8 (8.20-8.45) 65 15 11 T-45 -
SK-PH 8 x 80/25 A4 8 (8.20-8.45) 65 25 11 T-45 -
SK-PH 8 x 100/35 A4 8 (8.20-8.45) 65 35 11 T-45 -
SK-PH 10 x 105 A4 10 (10.20-10.45) 100 5 13 T-50 ETA-15/0815Option 1
SK-PH 10 x 115 A4 10 (10.20-10.45) 100 15 13 T-50 ETA-15/0815Option 1
SK-PH 10 x 125 A4 10 (10.20-10.45) 100 25 13 T-50 ETA-15/0815Option 1
SK-PH 10 x 135 A4 10 (10.20-10.45) 100 35 13 T-50 ETA-15/0815Option 1
SK-PH 10 x 150 A4 10 (10.20-10.45) 100 50 13 T-50 ETA-15/0815Option 1
SK-PH 10 x 80/5 A4 10 (10.20-10.45) 75 5 13 T-50 -
SK-PH 10 x 90/15 A4 10 (10.20-10.45) 75 15 13 T-50 -
SK-PH 10 x 100/25 A4 10 (10.20-10.45) 75 25 13 T-50 -
SK-PH 10 x 110/35 A4 10 (10.20-10.45) 75 35 13 T-50 -

Countersunk Head

Swipe left or right to view the complete specification table.

Item Size
D x L
(mm) 		Drill Bit
d0
(mm) 		Embedment
Depth hnom
(mm) 		Clamping Fixture
Thickness tfix
(mm) 		Fixture Hole
Diameter
(mm) 		Installation
Socket / Torx 		Approval
SK-CS 6 x 80 A4 6 (6.15-6.40) 70 10 9 T-40 ETA-16/0067Multiple Use
SK-CS 6 x 85 A4 6 (6.15-6.40) 70 15 9 T-40 ETA-16/0067Multiple Use
SK-CS 6 x 95 A4 6 (6.15-6.40) 70 25 9 T-40 ETA-16/0067Multiple Use
SK-CS 6 x 115 A4 6 (6.15-6.40) 70 45 9 T-40 ETA-16/0067Multiple Use
SK-CS 6 x 140 A4 6 (6.15-6.40) 70 70 9 T-40 ETA-16/0067Multiple Use
SK-CS 6 x 65/10 A4 6 (6.15-6.40) 55 10 9 T-40 -
SK-CS 6 x 70/15 A4 6 (6.15-6.40) 55 15 9 T-40 -
SK-CS 6 x 80/25 A4 6 (6.15-6.40) 55 25 9 T-40 -
SK-CS 8 x 95 A4 8 (8.20-8.45) 85 10 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 100 A4 8 (8.20-8.45) 85 15 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 110 A4 8 (8.20-8.45) 85 25 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 120 A4 8 (8.20-8.45) 85 35 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 130 A4 8 (8.20-8.45) 85 45 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 150 A4 8 (8.20-8.45) 85 65 11 T-45 ETA-15/0815Option 1
SK-CS 8 x 75/10 A4 8 (8.20-8.45) 65 10 11 T-45 -
SK-CS 8 x 80/15 A4 8 (8.20-8.45) 65 15 11 T-45 -
SK-CS 8 x 90/25 A4 8 (8.20-8.45) 65 25 11 T-45 -
SK-CS 8 x 100/35 A4 8 (8.20-8.45) 65 35 11 T-45 -
SK-CS 10 x 110 A4 10 (10.20-10.45) 100 10 13 T-50 ETA-15/0815Option 1
SK-CS 10 x 115 A4 10 (10.20-10.45) 100 15 13 T-50 ETA-15/0815Option 1
SK-CS 10 x 125 A4 10 (10.20-10.45) 100 25 13 T-50 ETA-15/0815Option 1
SK-CS 10 x 135 A4 10 (10.20-10.45) 100 35 13 T-50 ETA-15/0815Option 1
SK-CS 10 x 150 A4 10 (10.20-10.45) 100 50 13 T-50 ETA-15/0815Option 1
SK-CS 10 x 85/10 A4 10 (10.20-10.45) 75 10 13 T-50 -
SK-CS 10 x 90/15 A4 10 (10.20-10.45) 75 15 13 T-50 -
SK-CS 10 x 100/25 A4 10 (10.20-10.45) 75 25 13 T-50 -
SK-CS 10 x 110/35 A4 10 (10.20-10.45) 75 35 13 T-50 -
Applications - ETA A4 Bi-Metal Concrete Screw Anchors - Sheh Kai

Application Fields

Applications


Concrete Anchoring Systems

Concrete Anchoring Systems

Reliable fastening solutions for cracked and uncracked concrete.

Structural Steel Installation

Structural Steel Installation

Suitable for steel brackets, base plates, and structural supports.

MEP & Interior Fixing

MEP & Interior Fixing

Pan and Flat Head options support interior fixtures and installation systems.

Coastal & Industrial Environments

Coastal & Industrial Environments

Ideal for outdoor, humid, and corrosion-critical applications.

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