SINCE 1989 · BOLT & FASTENER EXPERT

Precision Fastening, 36 Years of Craft.

IATF 16949 certified, Hyundai/Kia SQ A-Grade.
Pursuing zero-defect quality, every day.

IATF 16949ISO 14001Hyundai/Kia SQ A-GradeSmart Factory Award
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From hardened steel
to secure fastening.

Three-stage precision process: Forging → Rolling → Inspection. Monthly capacity of 10.5 million pieces and zero-defect quality, refined over 36 years.

1,050
MONTHLY CAPACITY
25
PRODUCTION LINES
44%
AVAILABLE CAPACITY
STAGE 01 FORGING
Forging
3 F/M and 12 H/D machines for high-temperature, high-pressure precision forging.
STAGE 02 ROLLING
Rolling
11 R/L machines for precision thread rolling and dimensional standardization.
STAGE 03 INSPECTION
Inspection
Vickers hardness, tensile, and salt-spray testing — targeting zero defects.
AT A GLANCE

Daesung Fastener by the Numbers

36 years in business, Hyundai/Kia SQ A-Grade, zero-defect quality — manufacturing expertise backed by data.

0
Years in Business
Continuous growth since 1989
0
Specialists
Quality · Production · Engineering
0
Monthly Capacity
44% capacity headroom
0PPM
Defect Rate
Target — and meeting it
0
2025 Revenue Target
Steady growth
CERTIFIED · 2026
Defect Rate · Live
0PPM
Zero defects in delivery · Continuously maintained
QUALITY SYSTEM

Four systems
built for zero defects.

Global automotive standards, Hyundai/Kia SQ A-Grade, environmental management, and smart factory operations. The foundation of Daesung Fastener's quality.

IATF 16949
2008 · Renewed 2024
International standard QMS for the global automotive industry. A prerequisite for OEM supply.
Hyundai/Kia SQ A-Grade
2013 · Maintained
Top-tier quality grade from Hyundai Motor Group's supplier program. Direct supply to Tier-1 partners.
ISO 14001
2008 · Renewed 2023
International standard for environmental management. Foundation of ESG, key for OEM ESG audits.
Smart Factory Build
2018 · Min. Commendation
Minister of SMEs and Startups Commendation. Recognized as a leader in manufacturing digital transformation.

Whatever the fastening, Daesung Fastener.

Full-range fastener production including specialty parts for automotive, aerospace, and construction equipment.

HEX Bolt
26 SPECS · M6 – M12
Hex-head bolt — automotive fastening standard. SWCH45F / SCM435.
Flange Bolt
23 SPECS · M6 – M12
Integrated flange. 10.9T / 12.9T high tensile. Phosphate coating.
Stud Bolt
3 SPECS · SCM435 10.9T
Double-ended threading, including self-aligning types.
Custom
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TRUSTED BY

A core partner
in Korean automotive.

Built on Hyundai/Kia SQ A-Grade, we supply precision fasteners to leading Tier 1 and Tier 2 automotive parts manufacturers in Korea.

YURA 유라코퍼레이션
YURA HARNESS 유라하네스
CHANGHWAN 창환단자공업
SEWHA 세화공업
CKT CORP CKT
DONGSEO 동서기공
SANGA 상아기연
SAMKEE 삼기프리시젼
INFAC 인팩
TAESUNG 태성전장
YOUSUNG 유성기업
LIHAON 리하온

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