DIN 931 Big Size Long Bolts
DIN 931 Big Size Long Bolts Manufacturer & Exporter from India
Introduction
Super Industries India is a trusted manufacturer and exporter of DIN 931 big size long bolts, designed for heavy-duty structural and industrial applications. DIN 931 bolts are partially threaded hex head bolts, widely used where high tensile strength, load-bearing capacity, and extended bolt length are required.
Our big size and long-length DIN 931 bolts are manufactured using high-grade raw materials and are suitable for demanding industries such as construction, steel structures, oil & gas, heavy engineering, power plants, and infrastructure projects.
What Is DIN 931 Bolt?
DIN 931 is a German standard for hex head bolts with partial threading. Unlike fully threaded bolts, DIN 931 bolts have a long unthreaded shank, which provides better shear strength and load distribution.
Key Characteristics
- Hexagonal head
- Partial thread
- Metric thread
- Suitable for high-load applications
DIN 931 bolts are often preferred in structural connections where alignment and shear resistance are critical.
DIN 931 Big Size Long Bolts – Product Overview
H2: Big Diameter & Long Length DIN 931 Bolts
Super Industries India specializes in large diameter and extra-long DIN 931 bolts, manufactured as per customer specifications.
Available Size Range
- Diameter: M16 to M72 (and above on request)
- Length: 100 mm to 1000 mm+
- Thread Type: Metric coarse (standard)
Custom sizes and lengths are available as per drawings.
Material Grades Offered
We manufacture DIN 931 long bolts using certified raw materials:
- Carbon Steel
- Alloy Steel
- Stainless Steel (on request)
Mechanical Grades
- 8.8
- 10.9
- 12.9
All grades are manufactured with strict mechanical property control.
Manufacturing Process
Our DIN 931 big size long bolts are produced using:
✔ Forged hex heads
✔ Precision machining
✔ Controlled threading
✔ Heat treatment (as per grade)
✔ Dimensional inspection
This ensures strength, accuracy, and long service life.
Surface Finish Options
Depending on application and environment, we offer:
- Black / Self Color
- Zinc Plated
- Hot Dip Galvanized (HDG)
- Electro Galvanized
- Custom coating (on request)
HDG DIN 931 bolts are widely used in outdoor and corrosive environments.
Standards & Compliance
Manufactured as per:
- DIN 931
- Equivalent to ISO 4014
Inspection and testing are carried out as per international norms.
Applications of DIN 931 Big Size Long Bolts
DIN 931 long bolts are commonly used in:
- Steel structures
- Bridges & infrastructure projects
- Heavy machinery assembly
- Oil & gas installations
- Power plants
- Industrial equipment
The long unthreaded shank provides better load transfer and joint stability.
Quality Control & Inspection
At Super Industries India, quality is a priority.
✔ Raw material verification
✔ Dimensional checks
✔ Thread gauging
✔ Mechanical property testing
✔ Visual inspection
Inspection reports can be provided on request.
Packaging & Export Supply
We supply DIN 931 big size long bolts in:
- Wooden boxes
- Palletized packaging
- Export-safe packing
We support bulk orders, project supply, and international shipping.
Why Choose Super Industries India?
✔ Manufacturer (not trader)
✔ Big size & long bolt specialization
✔ Custom manufacturing capability
✔ Export experience
✔ Competitive pricing
✔ Reliable delivery timelines
Request a Quote – DIN 931 Long Bolts
Looking for a DIN 931 big size long bolt manufacturer in India?
Send us your requirement for quick pricing and technical support.
Required Details for RFQ
- Diameter & length
- Grade
- Material
- Quantity
- Surface finish
- Application (optional)