About bolt threading machine

Bolt Threading Machine Manufacturer & Supplier in India | Surya Engineering

Surya Engineering is a manufacturer and supplier of Bolt Threading Machines, Foundation Bolt Threading Machines, MS Rod Threading Machines and Industrial Threading Machines in Mumbai, Maharashtra, India. These machines are designed to produce external threads on bolts, rods and other round metal components for construction, engineering, fabrication and industrial applications.

Surya Engineering's published specifications include bolt-threading machines with capacities ranging from approximately 630 mm, 945 mm and 1265 mm, depending on the machine configuration. The company describes its machines as using tangential chasers for external thread cutting and supporting thread forms such as Metric, BSW, BSP, NPT, UNC, UNF and ACME, depending on tooling and machine setup.

What is a Bolt Threading Machine?

A Bolt Threading Machine is an industrial machine used to produce external threads on bolts, rods, foundation bolts and other round metal components.

In a typical chaser-type machine, the workpiece is securely held while the die head rotates around the stationary bolt or rod. Tangential chasers act as cutting tools and form the required external thread.

Simple Definition

A Bolt Threading Machine is a specialized machine used to accurately create external threads on bolts, rods and round metal bars for fastening and industrial applications.

Surya Engineering's machine range is designed for applications involving foundation bolts, MS rods, round bars and other threaded components.

Why is a Bolt Threading Machine Used?

Threading is essential when a bolt or rod needs to form a secure connection with a nut, threaded hole, coupler or other threaded component.

A Bolt Threading Machine is used to:

• Produce accurate external threads
• Manufacture foundation bolts
• Thread MS rods and round bars
• Prepare industrial fasteners
• Produce metric and inch-based threads
• Create parallel and tapered threads
• Improve threading productivity
• Maintain repeatable thread dimensions
• Reduce manual threading work
• Support customized thread requirements

For industrial production, machine-based threading provides a more controlled process than manual thread cutting.

How Does a Bolt Threading Machine Work?

The basic process is:

Round Bar / Bolt Clamping Die-Head Setup Thread Cutting Inspection Finished Threaded Component

Step 1 Select the Material

Select the required bolt, MS rod, foundation bolt or round bar according to the job specification.

Step 2 Cut the Material

Cut the material to the required length.

Step 3 Clamp the Workpiece

Secure the bolt or rod firmly in the machine's vice/chucking arrangement.

Step 4 Select the Chaser

Install the correct tangential chaser/die head for the required thread type and size.

Step 5 Set the Thread

Set the required thread pitch, diameter and cutting position.

Step 6 Start Threading

The die head rotates and the cutting chasers form the external thread on the stationary workpiece.

Step 7 Inspect the Thread

Check:

• Thread diameter
• Pitch
• Thread length
• Profile
• Surface finish
• Fit with the matching nut/gauge

Step 8 Complete the Job

Remove the finished threaded bolt or rod and prepare it for assembly or further processing.

Surya Engineering specifically describes its bolt-threading machine as using a rotating die head and tangential chaser, with the bolt remaining stationary during threading.

Classification of Bolt Threading Machines

Bolt threading machines can be classified according to their application and threading method.

1. Foundation Bolt Threading Machine

Used to thread foundation bolts, anchor bolts and large round rods used in construction and industrial structures.

Surya Engineering lists a Foundation Bolt Threading Machine with capacities up to approximately 50 mm on its current product listing.

2. MS Rod Threading Machine

Designed for threading mild-steel rods and round bars.

3. Tangential Chaser Threading Machine

Uses replaceable tangential chasers as cutting tools to produce external threads.

4. Taper Threading Machine

Used when a tapered external thread is required.

5. Parallel Threading Machine

Produces cylindrical/parallel external threads.

6. Portable Threading Machine

Designed for applications where the machine needs to be moved between work locations.

7. Automatic / Semi-Automatic Threading Machine

Classified according to the level of operator involvement and automation.

Types of Threads Produced

Depending on the machine configuration and installed tooling, a Bolt Threading Machine can produce different thread profiles.

Surya Engineering's published machine information lists:

• Metric
• BSP
• BSPT
• NPT
• BSW
• BSF
• UNC
• UNF
• ACME

The available thread type depends on the die head, chaser and machine configuration.

Applications of Bolt Threading Machine

Bolt Threading Machines are used across construction and industrial sectors.

Construction

• Foundation bolts
• Anchor bolts
• Structural connections
• Formwork applications
• Construction machinery components

Engineering & Fabrication

• MS rods
• Round bars
• Industrial fasteners
• Machine components
• Fabricated structures

Infrastructure

• Bridges
• Industrial plants
• Railway infrastructure
• Power projects
• Heavy engineering projects

Industrial Manufacturing

• Fastener production
• Machinery manufacturing
• Equipment fabrication
• Maintenance workshops
• General engineering

Why Choose Surya Engineering?

Surya Engineering, established in Mumbai, manufactures and supplies construction and reinforcement-processing machinery including Rebar Couplers, Rebar Threading Machines, Rebar Cold Forging Machines, Bar Bending Machines, Bar Cutting Machines and Lanco Die Head Threading Machines.

Its current product listings also include Foundation Bolt Threading Machines, MS Rod Threading Machines, TMT/Rebar Threading Machines and other industrial threading equipment.

Pan-India Supply

Surya Engineering serves construction and industrial requirements across:

Mumbai | Navi Mumbai | Thane | Pune | Ahmedabad | Surat | Vadodara | Delhi NCR | Noida | Bengaluru | Hyderabad | Chennai | Kolkata | Jaipur | Indore | Nagpur | Lucknow | Maharashtra | Gujarat | Rajasthan | Uttar Pradesh | Madhya Pradesh | Pan-India