
Products

Seismic Bolt & Nut
Secure and Sturdy Attachment
Seismic bolts and nuts that stably withstand various loads such as tensile and shear forces during earthquakes

Overview
During Earthquakes
Withstanding Various Types of Loads
Concrete Fixing Solution
Seismic bolts and nuts are fixing systems designed to securely connect structural and non-structural elements to concrete, developed to withstand tensile and shear loads during earthquakes. They are applied to fixing various facilities that require seismic response, from anchor plates, metal structures, and pipe supports to distribution boards and ESS inverter boxes. Reliability is secured through ACI standard seismic tests and quality control, and confidence in field application is added through domestic accredited testing agency certification.
Highly reliable product that has undergone seismic tension and shear tests and quality control in accordance with ACI standards
The first seismic anchor bolt and nut in Korea to obtain certification from an accredited testing agency
Provides stability that saves construction time and considers seismic stress
Applied to structural fixing in cracked/non-cracked concrete environments
Applications
4 Application Areas
01
Structural & Steel Fixing
Anchor plates, metal structures, steel beams
02
Equipment & Device Fixing
Machinery, boilers, elevators, pumps, signaling equipment
03
Mechanical & Fire Safety Equipment
Fire/gas piping, pumps, supports, fire protection equipment
04
Electrical & Energy Systems
Bridges, tunnels, electrical trays, distribution boards, equipment
Models
3 Specialized Models for Optimal Seismic Construction Environments by Site

STA
Stud Seismic Anchor Bolt
Size
M8
M10
M12
M16
M20
Fixed seismic anchor bolt suitable for medium to heavy loads
Suitable for structures requiring long-term fixing
Easy installation without punch

SKA
Screw Seismic Anchor Bolt
Size
M8
M10
M12
Quick installation and minimal disassembly traces
Used in places with close structure installation
Suitable for impact driver installation

DIA
Drop-In Seismic Anchor Bolt
Size
M10(3/8")
M12(1/2")
Embedded female thread type drop-in seismic anchor bolt
Suitable for sites requiring bolt insertion/removal
Suitable for sites requiring clean finishing
Quick Comparison Table
Stud (STA)
Installation Method
Expansion sleeve fixed
Feature Summary
Medium/heavy load, permanent fixing
Specification
M8~M20
Recommended Use
Piping, equipment, structures
Screw (SKA)
Installation Method
Screw fastening
Feature Summary
Quick installation, easy disassembly
Specification
M8~M12
Recommended Use
Dense structures, temporary facilities
Drop-In (DIA)
Installation Method
Embedded fastening
Feature Summary
Female thread, bolt attachment/detachment
Specification
M10(3/8"), M12(1/2")
Recommended Use
Clean finishing, maintenance
Type
Installation Method
Feature Summary
Specification
Recommended Use
Stud (STA)
Expansion sleeve fixed
Medium/heavy load, permanent fixing
M8~M20
Piping, equipment, structures
Screw (SKA)
Screw fastening
Quick installation, easy disassembly
M8~M12
Dense structures, temporary facilities
Drop-In (DIA)
Embedded fastening
Female thread, bolt attachment/detachment
M10(3/8"), M12(1/2")
Clean finishing, maintenance
Product Detailed Structure

Installation
Simple Installation Method
Step 01
Drill
Use specified drill bit to drill concrete
to required depth.
Step 02
Clean
Use wire brush and air pump to
remove dust and debris from hole.
Step 03
Insert
Insert anchor with washer/nut into hole,
tap with hammer if needed.
Step 04
Tighten
Tighten with torque wrench to
recommended torque (Nm) value.
Step 01
Drill
Use specified drill bit to drill concrete
to required depth.
Step 02
Clean
Use wire brush and air pump to
remove dust and debris from hole.
Step 03
Insert
Insert anchor with washer/nut into hole,
tap with hammer if needed.
Step 04
Tighten
Tighten with torque wrench to
recommended torque (Nm) value.
Product-specific Example Images
STA

SKA

DIA

Detail
Stud Seismic Anchor Bolt
STA
Expansion sleeve type stud seismic anchor bolt anchored inside concrete drilling, easily installed using standard drill bits and general tools. Suitable for structures that require maximum heavy load transmission not only for vertical loads during earthquakes but also for installation loads caused by lateral forces. Resistant to temperature changes and guarantees long-term reliability and durability under constantly changing stress.

Features
1
Functions properly during earthquakes
2
Easy installation without punch
3
Minimal drilling required
4
Suitable for cracked/non-cracked concrete
5
Medium to heavy load capacity
6
Pre-installation or through fixture holes
7
Various lengths and diameters available
8
For static and quasi-static loads
9
Heat resistant (950°C+)
Key Performance Summary
Easy installation without punch
Heat resistant 950°C+
Various lengths/diameters
Detailed Specifications
d₀ (㎜)
L (㎜)
Lₛ (㎜)
T (Nm)
Sw (㎜)
dₙ (㎜)
h₁ (㎜)
hₙₒₘ (㎜)
tfix (㎜)
h (㎜)
Load Performance
Based on seismic test results in cracked concrete
Load Type
Content
M8
Tension
Shear
M10
Tension
Shear
M12
Tension
Shear
M16
Tension
Shear
M20
Tension
Shear
Ultimate Resistance
Actual pullout/shear load
10.5
15
10.7
13.8
15
23.9
25.4
42
50.2
57.1
Characteristic Resistance
5% fractile applied
10
14.3
10.2
13.1
14.3
22.7
24.1
40
47.7
54.2
Design Resistance
Safety factor applied
6.7
9.6
6.8
8.8
9.6
15.2
16.1
26.8
32
38.2
Recommended Resistance
Load safety factor applied
4.8
7.1
4.9
6.3
6.9
10.9
11.5
19.1
22.9
27.3
*Values may vary depending on site conditions and design standards.


































