Indonesia’s Bolt, Nuts, and Mechanical Supply Producer

Your trusted producer for superior-grade building material solutions, serving you with excellence and reliability.

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About Karunia Utama

Karunia Utama

Karunia Utama is a factory for anchor and other building materials. We provide products such as Bolt and Nut, Anchor Bolt, U-Bolt, Torque Control Bolt (TC-BOLT), Standard Bolt & Nut, Stud Bolt, Clam Bolt, Clam Grating, and Wire Mesh. We also provide custom construction needs such as custom bolts, and others.

Why Us

Our Strengths

Certificate

You can’t trust any company just like that. But we’re here to be your answer for the best and the most trusted bolt and nut company

Custom Product

We know that you need special bolt and nut for your building. That’s why we give you choice to design your own!

International
Standard

ASTM Standards: A36, A307, A325
DIN Standards: Available upon request
Other Standards: Customized to meet specific project requirements

Most Likely You Need

Our Best Product

anchor bolt

Anchor Bolt

Essential for securely attaching structures to concrete, providing stability & support.

Bolt & Nuts

Bolt & Nuts

Commonly used for high-rise building, steel structure, bridge, and railway such as LRT & MRT.

Stud Bolt

Stud Bolt

Fully threaded fasteners that connect flanges, fastening with nuts on both ends.

U-Bolt

U-Bolt

Primarily grips and supports pipes securely, ensuring stable installations and proper alignment.

Carriage Bolts

Carriage Bolts

A square neck keeps them from turning when tightening a nut

Proven Excellence

At PT Karunia Utama Putera, proven excellence is our standard. We equip ourselves with advanced machinery for precise measurements and dedicate a quality check division to ensure every product meets exact specifications and the highest standards of reliability.

Get to know our workshop

Precision, Quality, and Craftmanship

Everything begins with the best quality bolts and nuts

News

Our Blog

Di dunia teknik dan industri, ada banyak komponen kecil yang tampaknya sepele, tetapi memiliki peran yang sangat penting. Salah satunya….

Pernahkah Anda memperhatikan bagaimana struktur besar seperti jembatan, menara, atau peralatan berat tetap stabil meskipun menghadapi tekanan ekstrem? Salah satu….

Jenis Eye Bolt

Eye bolt atau Baut Mata adalah sekrup dengan kepala berbentuk cincin yang digunakan dalam berbagai aplikasi industri, terutama dalam pengangkatan….

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