- English
- Español
- Português
- русский
- Français
- 日本語
- Deutsch
- tiếng Việt
- Italiano
- Nederlands
- ภาษาไทย
- Polski
- 한국어
- Svenska
- magyar
- Malay
- বাংলা ভাষার
- Dansk
- Suomi
- हिन्दी
- Pilipino
- Türkçe
- Gaeilge
- العربية
- Indonesia
- Norsk
- تمل
- český
- ελληνικά
- український
- Javanese
- فارسی
- தமிழ்
- తెలుగు
- नेपाली
- Burmese
- български
- ລາວ
- Latine
- Қазақша
- Euskal
- Azərbaycan
- Slovenský jazyk
- Македонски
- Lietuvos
- Eesti Keel
- Română
- Slovenski
- मराठी
- Srpski језик
cap nuts
What Are Cap Nuts?
Cap nuts, also known as acorn nuts or crown nuts, are specialized fasteners widely used in various mechanical and construction applications. Their unique dome-shaped cap provides a finished appearance and crucial safety benefits by covering exposed threads. This prevents potential injuries from sharp edges and protects threads from damage, dust, and corrosion.
Key Features and Benefits
- Aesthetic Finish: The domed cap gives a smooth, professional look, ideal for visible parts of assemblies.
- Safety: Covers sharp thread ends, reducing the risk of cuts and snags.
- Thread Protection: Shields threads from environmental factors like moisture, dirt, and chemicals, extending the lifespan of the fastener assembly.
- Vibration Resistance: When properly torqued, cap nuts can help maintain clamp load under vibrational stresses.
- Versatility: Available in various materials, sizes, and finishes to suit different industrial needs.
Detailed Product Specifications
Our range of cap nuts is manufactured to the highest industry standards, ensuring reliability and performance. Below are the detailed specifications for our standard product line.
Material Specifications
| Material Grade | Standard | Tensile Strength (min) | Surface Finish | Common Applications |
|---|---|---|---|---|
| Stainless Steel 304 | AISI 304 | 75,000 psi | Plain, Passivated | Marine, Food Processing, Architectural |
| Stainless Steel 316 | AISI 316 | 80,000 psi | Plain, Passivated | Chemical Processing, High Corrosion Environments |
| Carbon Steel, Grade 5 | ASTM A563 | 120,000 psi | Zinc Plated, HDG | General Machinery, Automotive |
| Carbon Steel, Grade 8 | ASTM A563 | 150,000 psi | Zinc Plated, HDG | Heavy-Duty Equipment, High-Stress Applications |
| Brass | ASTM B16 | 45,000 psi | Natural, Chrome Plated | Plumbing, Decorative Hardware, Electrical |
| Aluminum 6061 | ASTM B211 | 18,000 psi | Anodized (Clear/Color) | Aerospace, Weight-Sensitive Applications |
Dimensional Specifications (Inch Series - UNC/UNF)
| Nominal Size | Threads per Inch | Width Across Flats (A/F) | Height (Approx.) | Proof Load (lbs) - Grade 5 Carbon Steel |
|---|---|---|---|---|
| #4 | 40 | 5/16" | 0.22" | 690 |
| #6 | 32 | 11/32" | 0.26" | 1,040 |
| #8 | 32 | 3/8" | 0.29" | 1,510 |
| #10 | 24 | 7/16" | 0.35" | 2,220 |
| 1/4" | 20 | 7/16" | 0.41" | 3,430 |
| 5/16" | 18 | 9/16" | 0.53" | 5,340 |
| 3/8" | 16 | 5/8" | 0.61" | 7,800 |
| 1/2" | 13 | 3/4" | 0.81" | 13,500 |
| 5/8" | 11 | 15/16" | 1.00" | 21,200 |
| 3/4" | 10 | 1-1/8" | 1.19" | 30,900 |
Dimensional Specifications (Metric Series)
| Nominal Size (M) | Thread Pitch (mm) | Width Across Flats (A/F) mm | Height (Approx.) mm | Proof Load (kN) - Property Class 8.8 |
|---|---|---|---|---|
| M4 | 0.7 | 7 | 5.6 | 4.85 |
| M5 | 0.8 | 8 | 6.8 | 7.60 |
| M6 | 1.0 | 10 | 8.1 | 11.0 |
| M8 | 1.25 | 13 | 10.5 | 20.1 |
| M10 | 1.5 | 17 | 13.2 | 31.4 |
| M12 | 1.75 | 19 | 15.8 | 45.3 |
| M16 | 2.0 | 24 | 20.3 | 81.5 |
| M20 | 2.5 | 30 | 25.0 | 127 |
| M24 | 3.0 | 36 | 29.7 | 183 |
Related Products
Hot Products
Slotted Hex Head Screws
A slotted hex head screws are hexagonal screws with a straight slot on the head.The screws produced by Xiaoguo®are reasonably priced and require high quality. If you place a bulk order, we can offer discounted prices. Please feel free to contact us and we will provide you with the most favorable quotation.
Industrial Grade Pin
Xiaoguo's China Industrial Grade Pin products are known for their precise dimensions and excellent durability.they are the core fasteners used in industrial scenarios for component positioning, connection, or braking, featuring robust construction, vibration and wear resistance, high precision.
Metric Slotted Round Nuts
Xiaoguo® Metric slotted round nuts strictly follow the BS 4185-1-1-1967 standard to ensure the global compatibility of size, material and performance, meet high-precision assembly requirements and improve product compatibility.
Wing Nuts Round Wing Shape
China supplier Xiaoguo® Wing nuts round wing shape that let you tighten them by hand easily—no tools required. The rounded shape fits your fingers well, so you can twist them on and off quickly. They work great for parts you need to adjust often or for covers. If you’re looking for reliable hardware, these China-made wing nuts have consistent wing shape and stable stock.
Hexagon Flange Nuts
As one of professional manufacturer in China, Xiaoguo® would like to provide you Hexagon Flange Nuts. And we will offer you the best after-sale service and timely delivery. Hexagon Nuts with Flange: The Secure Choice for Your Applications. XIAOGUO's Hexagon Nuts with Flange offer superior strength and durability, ensuring a secure and tight fit for your equipment.
Spring Lock Washers
The Spring Lock Washers produced by the Xiaoguo® factory have natural elasticity. After being tightened, they will continuously exert a reverse elastic force on the bolts and nuts, effectively preventing the bolts and nuts from loosening.
- Related Blog
- Reviews
