| Size | M6 to M20 |
|---|---|
| Type | Nut, Custom Fasteners |
| Standard | Din, Iso, Jis, Gb, Is, Bs, Astm |
| Length | 3mm to 200mm |
| Material | Stainless Steel, Monel, Inconel, Incoloy, Hastelloy, Nickel, Silicon Bronze, Phosphor Bronze |
Trusted All Metal Lock Nuts Manufacturer in India Engineered for Vibration Resistance, High Temperature & Secure Industrial Fastening Systems
Ananka Group is a leading All Metal Lock Nuts Manufacturer, offering high-performance fastening solutions for demanding industrial applications. Our all-metal lock nuts are engineered to provide secure, vibration-resistant locking without the use of nylon or other non-metallic inserts, making them ideal for high-temperature and high-load environments. These Nuts are widely used in the automotive, construction, aerospace, and heavy machinery industries for their durability, reliability, and ability to maintain clamping force under stress.
They feature excellent mechanical strength and corrosion resistance are available in zinc-plated, black oxide, and galvanized finishes. Through our user-friendly B2B portal, clients can easily browse product specifications, request quotes, and place bulk orders with real-time assistance. We ensure reliable and timely delivery across India and to over 50 countries worldwide, supported by robust logistics, export documentation, and customized packaging options for safe transit.
All Metal Lock Nuts – Standard Weight Chart
Inch Size – ASTM / ASME Reference
Nut Size (Inch) | Across Flats (mm) | Approx. Weight per Piece (kg) | Approx. Weight per 100 Nos (kg) |
|---|---|---|---|
| 1/4" | 7/16" | 0.006 | 0.60 |
| 5/16" | 1/2" | 0.009 | 0.90 |
| 3/8" | 9/16" | 0.015 | 1.50 |
| 7/16" | 5/8" | 0.022 | 2.20 |
| 1/2" | 3/4" | 0.030 | 3.00 |
| 9/16" | 13/16" | 0.042 | 4.20 |
| 5/8" | 15/16" | 0.055 | 5.50 |
| 3/4" | 1.1/8" | 0.095 | 9.50 |
| 7/8" | 1.5/16" | 0.145 | 14.50 |
| 1" | 1.1/2" | 0.200 | 20.00 |
| 1.1/8" | 1.11/16" | 0.275 | 27.50 |
| 1.1/4" | 1.7/8" | 0.360 | 36.00 |
| 1.1/2" | 2.1/4" | 0.540 | 54.00 |
Our All Metal Lock Nuts are manufactured with stringent quality controls and rigorous inspection procedures to ensure reliable locking performance, resistance to loosening, and long-term durability in demanding industrial environments. Each lock nut is precisely formed using advanced deformation techniques to create a prevailing torque mechanism that maintains secure fastening even under continuous vibration and thermal cycling. Designed to reduce maintenance intervals and prevent joint failure, all metal lock nuts provide consistent performance in critical fastening applications. Contact us today to request a quotation or discuss your specific operating conditions in detail.
Key Features & Applications of All Metal Lock Nuts
- Commonly used for preventing loosening in high-vibration and high-load assemblies, including rotating equipment, structural joints, and mechanical systems.
- Manufactured in accordance with ASTM, ASME, DIN, ISO, BS, and IS standards, ensuring dependable quality, dimensional accuracy, and extended service life.
- Available in carbon steel, alloy steel, stainless steel, duplex & super duplex steel, and special alloys, suitable for high-temperature, corrosive, and critical service environments.
- Designed to perform reliably across a wide range of operating conditions, including thermal expansion, cyclic loading, shock, and mechanical stress.
- Widely used in oil & gas, petrochemical & refining, power generation, chemical processing, railways, marine, construction, and heavy engineering industries where safety and joint integrity are essential.
All Metal Lock Nuts Client Project Summary
This project involved the manufacture and supply of high-performance all metal lock nuts for critical fastening applications where resistance to vibration, thermal cycling, and mechanical stress was essential. The lock nuts were produced using certified carbon steel, alloy steel, and stainless steel materials, fully conforming to ASTM, ASME, DIN, and ISO specifications for strength, reliability, and service durability.
Each all metal lock nut underwent comprehensive quality inspection and performance verification, including dimensional accuracy checks, prevailing torque testing, hardness evaluation, and surface finish inspection. Selected batches were further assessed for repeated installation performance to ensure consistent locking action throughout service life. The project was completed within the committed timeframe, supporting secure assembly, operational safety, and uninterrupted performance at the client’s facilities.
Product Supplied | Quantity Supplied | Cities (India) |
|---|---|---|
All Metal Lock Nuts for High-Vibration Assemblies | 230 Pieces | Mumbai |
ASTM Standard All Metal Lock Nuts (Various Sizes) | 265 Pieces | Ahmedabad |
Industrial All Metal Lock Nuts for Heavy Equipment | 245 Pieces | Chennai |
Carbon & Alloy Steel All Metal Lock Nuts | 215 Pieces | Pune |
Type of Sub-products

Top Lock Nuts Top Lock Nuts
These nuts have a slightly deformed top thread that creates resistance against loosening. The distortion provides a mechanical lock when the bolt is threaded in, making them ideal for high vibration applications.

Stover Lock Nuts Stover Lock Nuts
These feature a conical top or off center threads that create constant resistance (torque) during installation. Known for their strong locking action without the need for additional locking components.
