Titanium Lock Nut Manufacturer in Chennai
Nobel Weld is a titanium lock nut manufacturer in Chennai. We machine slotted lock nuts, bearing lock nuts, impeller nuts and jam nuts in titanium, duplex, Monel and Hastelloy to your drawing.
An impeller or bearing lock nut is a small part that stops a pump. When it runs wetted, it must match the shaft alloy.

How a titanium lock nut manufacturer makes impeller nuts
Lock nuts are turned and threaded from bar, then slotted or drilled for tab washers and locking screws on the VMC. Thread fit is checked against the mating shaft thread gauge.
Where they are used
- Pump impeller retention
- Bearing and sleeve locking
- Valve stem and spindle locking
How we make lock nuts
- 1Turned and threaded from certified bar
- 2Slots, holes and flats milled on VMC
- 3Right- and left-hand threads
- 4Thread fit checked with gauges
Materials
- TitaniumGr 1, 2, 5 (Ti-6Al-4V), 7, 12
- Duplex and super duplexUNS S31803/S32205, S32750/S32760, S32550
- MonelMonel 400 (N04400)
- HastelloyC-276 (N10276), C-22 (N06022)
Material supplied with EN 10204 3.1 certificates and heat-number traceability.
Where we deliver
Lock nuts for Chennai, Tamil Nadu and India
From Chennai, we serve plants, OEMs and EPC contractors across Tamil Nadu and the rest of India, with EN 10204 3.1 certificates, heat-number traceability and export packing where needed.
- Chennai
- From our shop in Gowrivakkam to plants in Manali, Ennore, Ambattur, Guindy, Sriperumbudur and Oragadam.
- Tamil Nadu
- Coimbatore, Hosur, Tiruchirappalli, Thoothukudi, Cuddalore, Ranipet, Madurai and Mettur.
- India
- Gujarat, Maharashtra, Karnataka, Telangana, Andhra Pradesh and Kerala; export on ex-works, FOB or CIF terms.
FAQ
Lock nuts: common questions
What does your titanium lock nut manufacturing include?
Slotted and bearing lock nuts, impeller nuts and jam nuts, right- or left-hand threaded.
Can you match an existing shaft thread?
Yes. Send the shaft drawing or a sample nut.
Which alloy should the lock nut be?
Usually the same alloy as the shaft or impeller, to avoid galvanic corrosion.
Send the drawing for your lock nuts
Tell us the material grade, size and quantity, or send a sample. You get a technical and commercial reply within 48 hours.