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ProductsAt present, the company has the ability to produce 50000 tons of rail buckle accessories annually. The product series includes various specifications of spring bars Gauge baffles, switch special pads, joint clamps for 43kg, 50kg, 60kg steel rails, various export products, etc
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AboutThe company was established in 1994 and is a production enterprise specializing in the research and development, production, and sales of railway line specific accessories
What is a Cap Nut?
A cap nut, also known as an acorn nut or dome nut, is a fastener designed to cover the exposed threads of a bolt or screw. Picture it as a protective shield that wraps around the sharp edges of a bolt. Its most notable feature is its closed, dome-like top, which helps protect the thread from damage while giving the entire assembly a neat, finished appearance.
The design of cap nuts is simple yet effective. The rounded dome not only protects the threads from corrosion but also prevents accidental injuries caused by sharp threads. You’ll often see these used in both industrial and consumer products, where appearance and safety matter equally.
What is the Purpose of a Cap Nut?
Cap nuts are far from just decorative. They serve practical purposes that make them indispensable in various applications.
hread Protection
A key function of a cap nut is to protect the exposed threads of a bolt or screw. By covering the threads, cap nuts help keep dirt, moisture, and other harmful elements away. This prevents damage that could weaken the connection and cause the fastener to fail over time.
Aesthetic Appeal
Cap nuts are often used where a clean, polished finish is desired. Think of furniture, machinery, or even automotive parts. Their smooth, rounded look improves the overall appearance, creating a professional, neat finish that shows attention to detail.
Safety Considerations
Safety is key. Cap nuts cover sharp threads, preventing any exposed edges that could be dangerous. In workplaces or around machinery, this extra protection reduces the risk of injury. Workers handling equipment will appreciate the smooth, safe finish that cap nuts provide.
Cap Nut Considerations
When you're trying to select cap nuts and bolts, there are a few things you should bear in mind, including the following:
- Since acorn nuts have a closed end, the mating fastener's exposed threads must be short enough to allow the nut to be fully tightened.
- The hex portion under the cap allows for installation with sockets, wrenches, and nut drivers.
- The domed portion is internally threaded and protects the external threads of the mating fastener.
- Cap nuts can be used with screws and bolts or any other externally threaded items that have a machined thread.
Metric Size | M3 | M4 | M5 | M6 | M8 | M10 |
A/F | 5.5MM | 7MM | 8MM | 10MM | 13MM | 17MM |
Height (H) | 5.0MM | 6.2MM | 7.5MM | 9.5MM | 12.5MM | 15.5MM |
Metric Size | M12 | M14 | M16 | M20 | M22 | M24 |
A/F | 19MM | 22MM | M24 | 30MM | 32MM | 36MM |
Height (H) | 18.5MM | 21MM | 24MM | 29MM | 32.5MM | 35.5MM |
Inches Size | 1/4 | 5/16 | 3/8 | 1/2 UNC | 1/2 BSW | 5/8 | 3/4 |
A/F | 7/16 | 1/2 | 9/16 | 3/4 | 3/4 | 15/16 | 1-1/8 |
Height (H) | 9.5MM | 13.1MM | 14.7MM | 20.2MM | 17.6MM | 25.2MM | 27.8MM |
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Henan Xinda Railway Equipment Co., Ltd
Fax: +86-372-2615999
Tel: +86-18567891234
Email:info@xindarail.com
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