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acorn hex nuts
Understanding the Value of Acorn Hex Nuts
Acorn hex nuts, sometimes referred to as cap nuts or dome nuts, are a specialized type of fastener prized for their dual functionality of secure fastening and a finished, aesthetically pleasing appearance. Like a standard hexagon nut, they feature a six-sided exterior for easy installation with common wrenches. However, their defining characteristic is the domed, closed end that covers exposed bolt threads, protecting them from environmental damage, preventing snagging on materials or clothing, and enhancing the overall look of an assembly. This makes them an excellent alternative to a standard hexagon cap nut when a completely enclosed, smooth finish is required. These nuts are indispensable in applications where safety, cleanliness, and visual appeal are paramount.
Detailed Specifications of the Acorn Hex Nut
The Acorn Hex Nut is engineered for reliability across various demanding environments. Below are the detailed technical parameters that define our product range.
Key Product Features
- Material: Manufactured from high-grade materials including Grade 2, 5, and 8 Steel, 304 and 316 Stainless Steel, Brass, and Silicon Bronze for superior corrosion resistance and strength.
- Finish: Available in multiple finishes such as Plain, Zinc Plated, Hot-Dip Galvanized, and Dichromate to suit different environmental and aesthetic requirements.
- Design: Features a deep, one-piece domed cap that fully encapsulates the bolt end, providing a smooth, rounded surface.
- Threads: Precision-cut Unified National Coarse (UNC), Unified National Fine (UNF), or Metric threads ensure a perfect fit and consistent performance.
Standard Size and Dimensions (Inch Series)
| Nominal Size | Threads Per Inch | Width Across Flats (in) | Height (Approx. in) | Proof Load (psi, Grade 5) |
|---|---|---|---|---|
| 1/4" | 20 | 7/16 | 0.41 | 85,000 |
| 5/16" | 18 | 1/2 | 0.53 | 85,000 |
| 3/8" | 16 | 9/16 | 0.66 | 85,000 |
| 1/2" | 13 | 3/4 | 0.84 | 85,000 |
Standard Size and Dimensions (Metric Series)
| Nominal Size (mm) | Thread Pitch (mm) | Width Across Flats (mm) | Height (Approx. mm) | Property Class (e.g., 8) |
|---|---|---|---|---|
| M6 | 1.0 | 10 | 11 | 8 |
| M8 | 1.25 | 13 | 14 | 8 |
| M10 | 1.5 | 17 | 18 | 8 |
| M12 | 1.75 | 19 | 22 | 8 |
The Acorn Hex Nut is commonly specified in the automotive, furniture, marine, and construction industries. Its robust construction prevents loosening from vibration and its sealed end resists the ingress of moisture, dirt, and other contaminants, ensuring the longevity of the bolted joint.
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