Best Slotted Nuts Manufacturer, Supplier, and Exporter in India – Mcneil Instruments
Mcneil Instruments is a leading manufacturer, supplier, and exporter of Slotted Nuts based in Mumbai, India. Our Slotted Nuts are meticulously designed to meet a diverse range of industrial fastening needs. Recognized for their strength and reliability, these nuts ensure a secure and robust connection across various applications. Manufactured from high-quality materials and conforming to international standards, our Slotted Nuts deliver exceptional performance and resistance to wear, making them ideal for demanding environments.

What is a Slotted nut?
A T-slot nut is used with a threaded clamp to position and secure pieces being worked on in a workshop. The T-slot nut slides along a T-slot track, which is set in workbench or table for a router, drill press, or bandsaw.
What are slotted nuts used for?
Slotted nuts are used to secure fasteners in place by inserting a cotter pin through their slots and the bolt, preventing loosening. They are commonly used in automotive, machinery, and structural applications where vibration and movement are present. Their design ensures a strong and reliable locking mechanism for critical connections.
What is commonly used with a slotted nut?
A Slotted Nut has slots cut into one end of the nut. When it is used in an application, a bolt or threaded bar generally has a pre-drilled hole so that when the slotted nut is threaded on and torqued to the required position, it can be then secured using a cotter pin or write to prevent rotation.
Advantages and Disadvantages of Slotted Nuts
| Advantages of Slotted Nuts | Description |
| Easy Installation | Can be installed easily using a screwdriver or spanner. |
| Provides Extra Grip | The slots allow the nut to grip the screw or bolt tightly, preventing loosening due to vibrations. |
| Easy to Tighten and Loosen | Suitable for applications requiring frequent adjustments due to ease of tightening and loosening. |
| Cost-Effective | Relatively inexpensive compared to other fasteners, making them a budget-friendly option. |
| Disadvantages of Slotted Nuts | Description |
| Susceptible to Vibration | Can still come loose under constant vibrations despite providing extra grip. |
| Difficult to Remove | The tight grip can make removal challenging in applications requiring frequent disassembly. |
| Limited Torque | Not suitable for high-torque applications due to limited torque capacity. |
| Limited Availability | May not be as widely available as other types of nuts, posing challenges in finding specific sizes and types. |
Slotted Nuts Dimensions and Specifications
| Parameter | Details |
| Sizes | M3 to M48, 1/8” to 2” |
| Standards | DIN 935, ISO 703, ASTM, ASME, BS, ANSI |
| Materials | Stainless Steel (SS 304, SS 316), Carbon Steel, Alloy Steel, Brass, Copper, and Phosphor Bronze |
| Coatings | Zinc Plated, Galvanized, Black Oxide, Nickel Plated, PTFE Coated |
| Grades | High Tensile (8.8, 10.9, 12.9), ASTM A194 Grade 2H, 2HM, B7, B16 |
| Thread Types | Metric, UNC, UNF, BSW, BSF |
| Torque Capacity | Low to Medium Torque Applications |
| Forming Types | Hot Forged, Cold Forged |
| Applications | Automotive, Construction, Machinery, Oil and Gas, Marine |

