About Brass Lock Nuts-Precision Fasteners for Industrial Applications
We are one of the top manufacturers and suppliers from India of various Brass lock nuts and Brass hex nuts, square nuts. Brass lock nuts are durable, corrosion-resistant fasteners designed to provide secure tightening in vibration-prone environments. These nuts are widely used in electrical, plumbing, marine, and industrial applications due to their excellent conductivity, non-magnetic properties, and resistance to rust and corrosion.
We specialize in high-precision brass lock nuts, available in various thread types, sizes, and finishes, conforming to DIN, ASTM, and BS standards.
Brass lock nuts are manufactured using different grades of brass alloys, each offering unique benefits in terms of strength, machinability, and corrosion resistance.
| Grade | Composition | Properties | Standards |
|---|---|---|---|
| C36000 (Free Machining Brass) | 60% Cu, 36% Zn, 3% Pb | High machinability, moderate strength | ASTM B16, BS CZ121, DIN 2.0401 |
| C37700 (Forging Brass) | 58-61% Cu, 35-41% Zn, 1-2% Pb | High strength, excellent hot workability | ASTM B124, BS CZ122, DIN 2.0380 |
| C46400 (Naval Brass) | 60% Cu, 39% Zn, 0.75% Sn | Superior corrosion resistance, marine applications | ASTM B21, BS CZ130, DIN 2.0580 |
| C69300 (Lead-Free Silicon Brass) | 76-82% Cu, 15-20% Zn, 2-4% Si | High strength, lead-free, eco-friendly | ASTM B371, DIN CuZn21Si3P |
| C27200 (Yellow Brass) | 62-65% Cu, 34-37% Zn | Good corrosion resistance, economical | ASTM B135, DIN 2.0321 |
✔ Custom material grades available upon request.
We manufacture brass lock nuts using two primary production methods, ensuring high precision and durability.
✔ Custom manufacturing available for special applications.
We manufacture brass lock nuts with various thread types to meet global engineering and fastening standards.
| Thread Type | Description | Common Applications |
|---|---|---|
| Metric (ISO) | Standard thread profile, used globally | Industrial machinery, plumbing |
| UNC (Unified National Coarse) | Coarse thread, suitable for general use | Electrical fittings, automotive |
| UNF (Unified National Fine) | Fine thread, high strength | Aerospace, hydraulic fittings |
| BSP (British Standard Pipe) | Used for pipe fittings and connections | Plumbing, gas fittings |
| NPT (National Pipe Thread) | Tapered thread for sealed joints | Oil & gas, industrial piping |
| Acme Threads | Strong, broad-thread profile | Heavy-duty applications |
✔ Custom threading options available upon request.
| Thread Size | Hex Size (Across Flats) mm | Thickness mm |
|---|---|---|
| M3 | 5.5 mm | 2.4 mm |
| M4 | 7 mm | 2.9 mm |
| M5 | 8 mm | 3.2 mm |
| M6 | 10 mm | 3.7 mm |
| M8 | 13 mm | 4.7 mm |
| M10 | 17 mm | 5.7 mm |
| M12 | 19 mm | 6.7 mm |
| M16 | 24 mm | 8.8 mm |
| M20 | 30 mm | 10.9 mm |
| Thread Size | Hex Size (Across Flats) inch | Thickness inch |
|---|---|---|
| 1/4"-20 UNC | 7/16" | 7/32" |
| 5/16"-18 UNC | 9/16" | 1/4" |
| 3/8"-16 UNC | 11/16" | 5/16" |
| 1/2"-13 UNC | 7/8" | 3/8" |
| 5/8"-11 UNC | 1-1/16" | 15/32" |
| 3/4"-10 UNC | 1-1/4" | 9/16" |
| 1"-8 UNC | 1-5/8" | 3/4" |
✔ Additional sizes available upon request.
Our brass lock nuts conform to international quality and safety standards, ensuring reliability across multiple industries.
✔ Material and test certificates available upon request.
Due to their non-corrosive, non-magnetic, and electrically conductive properties, brass lock nuts are widely used in various industries.
Finishing & Surface Treatment Options
Brass lock nuts are available in multiple finishes to enhance durability, aesthetics, and performance.
✔ Plain Brass Finish – Natural golden brass appearance.
✔ Nickel Plating – Improved corrosion resistance and polished silver-like finish.
✔ Tin Plating – Enhanced conductivity for electrical applications.
✔ Black Oxide Coating – Non-reflective, matte surface for industrial use.
Looking for high-quality Brass lock nuts in custom sizes, threads, or finishes? We provide bulk and custom orders to meet industry-specific requirements. We can also offer Bronze Lock nuts, Copper lock nuts, Stainless Steel lock nuts in various threads as needed.
Lock Nuts
