Hexagon Castle Nut

Although the surface of the Hexagon Castle Nut may have a rust-proof coating, the main way we maintain their waterproof performance during transportation is through packaging.

When we place the large cardboard boxes (large containers with slotted round-head nuts) on the pallets, we will completely cover them with thick waterproof plastic film. This can effectively prevent the influence of rain, moisture, and any accidental splashes - whether during transportation or after they are stored outdoors for a period of time. Thus, when these nuts arrive at your place, there will be no rusting.

Strict quality inspection

Our quality inspection of the Hexagon Castle Nut is very strict. First, we will strictly control the raw materials with the corresponding certifications. Then, we will conduct inspections at every manufacturing stage (such as cold forging, slotting, thread processing, and surface treatment).

We use a method called Statistical Process Control (SPC) to continuously monitor key indicators. For example, the pitch of the thread, the width of the slot, whether the slots are arranged neatly, and the hardness of the nut. This method ensures that each trough-shaped cap nut meets the strict standards of dimensional accuracy and mechanical strength - thereby guaranteeing that they can work stably and normally.

Product Parameters

FAQ

Q: What is the torque specification for your crown nuts with slots?

A:How much torque you need to use on a Hexagon Castle Nut depends on its grade, size, and what material it’s made of. It’s important to tighten it to the recommended torque value—this way, the slot lines up with the hole in the bolt so you can put the cotter pin in.

We give detailed torque charts for each type of slotted crown nut. These help make sure you get the right pre-load, so the connection is safe and reliable, and you don’t damage the threads.