We work better under tension.
Precision springs and wire components for Defence, Aerospace and Industrial applications. Trusted by India's ordnance factories and defence manufacturers for three decades.
Three decades of springs for India's defence sector.
The company began in 1995 with a single type of magazine spring. Today our Kanpur works engineers more than 400 varieties of springs and sheet-metal components, with CNC coiling, heat treatment and testing all under one roof.
Six product families, made to your drawing.
Compression springs
- Standard and heavy-duty
- Miniature and custom sizes
- Conical springs
Torsion springs
- Single and double torsion
- Long-arm and power torsion
- Torsion wire forms
Extension springs
- Hook and loop type
- Industrial extension
- Mini extension
Specialty springs
- Magazine springs
- Hammer springs
- Braided wire and flat springs
Wire forms and clips
- R-clips, U-clips and S-hooks
- Retaining clips and hitch pins
- Lock pins and wire hooks
Components and custom
Sheet-metal components, battery contacts and assemblies, and fully custom spring design.
From drawing to dispatch, in one works.
- Step 1
Drawing review
We study your drawing or sample with your engineers.
- Step 2
CNC coiling and forming
Wire Ø 0.3 to 2.3 mm on multi-axis machines.
- Step 3
Heat treatment
Stress-relieving and tempering in our conveyorised furnace.
- Step 4
Load and vibration testing
Force-tested against the specification.
- Step 5
100% inspection
Documented checks on every part.
- Step 6
Dispatch
500 to 50,000 units a month per component.
Components on India's frontline programmes.
Advanced Towed Artillery Gun System, supplied to Tata Advanced Systems.
Springs for the JVPC carbine programme.
Rifle components supplied to Indo-Russia Rifles Pvt. Ltd. (IRRPL).
Ordnance factories, DRDO and private defence.
Have a drawing or a development sample?
Send it to our team. We typically respond within one working day.
Built on one spring. Grown to four hundred.
JKUMAR Wires and Springs LLP is one of India's trusted manufacturers of precision springs and wire components for the defence sector.
The company was founded in 1995 by the late Shri Harish Kumar Sharaff. It began with a single type of magazine spring.
From our manufacturing unit in Dada Nagar, Kanpur, we now engineer and deliver more than 400 varieties of springs and sheet-metal components. Three decades of hands-on metallurgical experience sit alongside modern CNC coiling, forming and testing equipment.
Our customers include India's ordnance factories, DRDO laboratories and leading private-sector defence manufacturers. Many of these relationships have lasted decades.
Deliver springs of exceptional quality, exceed customer expectations on every order, and build partnerships that last for decades.
What every order is held to.
Quality excellence
Every component passes load, vibration and dimensional checks before dispatch. In defence work there is no margin for error.
Customer focus
We work with each client's engineering team and adapt designs, materials and schedules to the order.
Long-term partnerships
Many client relationships span decades. We aim to be a dependable extension of our customers' supply chains.
Precision engineering
CNC manufacturing, in-house heat treatment and disciplined process control give repeatable precision at any volume.
Four reasons buyers come back.
Defence specialists
Deep experience in springs for small arms, artillery systems and related defence platforms.
Proven delivery record
Components supplied for the ATAGS programme (Tata Advanced Systems), the JVPC and the AK-203 rifle (IRRPL), among many other platforms.
Scalable capacity
Production from 500 to 50,000 units a month per component, with capacity that scales quickly.
End-to-end in-house
CNC coiling and forming, heat treatment, load and vibration testing, and 100% quality inspection under one roof.
Every process under one roof in Kanpur.
Our Dada Nagar facility runs CNC coiling and forming machines, backed by in-house heat treatment and testing, so we control the quality of every part we ship.
What our machines can do.
| Process | Wire Ø | Used for |
|---|---|---|
| CNC spring coiling | 0.3 – 1.6 mm | High-precision compression, extension and specialty springs |
| CNC wire forming | 0.4 – 2.3 mm | Torsion springs, wire forms, clips and complex geometries |
| Heat treatment | In-house | Controlled stress-relieving and tempering in a conveyorised furnace, for consistent metallurgy batch after batch |
| Load and vibration testing | Every type | Dedicated force-testing systems check each spring type against its specification |
| Quality inspection | 100% | Documented quality checks on every product before it leaves the factory |
| Monthly capacity | 500 – 50,000 | Units per component per month, scaling quickly with demand |
Wire diameter range
Drawn to scale, in millimetres.
Plant and machinery.
No part leaves without a check.
In defence applications there is no margin for error. Every batch passes through the same documented sequence.
- Dimensional checksMeasured against the customer drawing.
- Load testingForce verified on dedicated testing systems.
- Vibration testingValidated for the conditions the part will see.
- 100% final inspectionDocumented before dispatch.
Over 400 varieties, from standard to fully custom.
We make springs, wire forms and sheet-metal components across six families. Most work is built to the customer's drawing.
Compression springs
- Standard and heavy-duty
- Miniature and custom sizes
- Conical springs
Torsion springs
- Single and double torsion
- Long-arm and power torsion
- Torsion wire forms
Extension springs
- Hook and loop type
- Industrial extension
- Mini extension
Specialty springs
- Magazine springs
- Hammer springs
- Braided wire and flat springs
Wire forms and clips
- R-clips, U-clips and S-hooks
- Retaining clips and hitch pins
- Lock pins and wire hooks
Components and custom
- Sheet-metal components
- Battery contacts and assemblies
- Fully custom spring design
Precision, up close.
CNC COILED
CNC COILEDCNC COILED
CNC FORMEDCNC FORMED
CNC COILEDSPECIALTYCNC FORMEDDon't see your part?
Most of what we make is custom. Send a drawing or sample and we will tell you how we can make it.
Our clients.
For three decades we have served India's ordnance factories, DRDO laboratories and leading private-sector defence manufacturers. More than 50 clients across the country.
Selected clients shown. We supply more than 50 organisations across India.
Become our next long-term partner.
Talk to us about your programme, volumes and timelines.
Let's build under tension.
For enquiries, drawings and development samples, reach our team. We typically respond within one working day.
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Kanpur 208 022, Uttar Pradesh Open in Google Maps ↗
Naveen Nagar, Kakadeo, Kanpur 208 025 Open in Google Maps ↗