- 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
Grooved Pins-One-Third-Length Centre Grooved
We are Baoding Xiaoguo Intelligent Equipment Co., LTD. These are related to the Grooved pins-One-third-length centre grooved news, in which you can learn about the updated information in Grooved pins-One-third-length centre grooved, to help you better understand and expand Grooved pins-One-third-length centre grooved market. Because the market for Grooved pins-One-third-length centre grooved is evolving and changing, so we recommend that you collect our website, and we will show you the latest news on a regular basis.
Slotted Countersunk Flat Head Thread Cutting Screws
Baoding Xiaoguo Intelligent Equipment Co., LTD. is a professional China Slotted countersunk flat head thread cutting screws manufacturer and supplier, if you are looking for the best Slotted countersunk flat head thread cutting screws with low price, consult us now!
Hexagon Nuts with Cone
Xiaoguo® factory’s hexagon nuts with cone lock themselves tight. The cone shape and threads work together to grip bolts hard-no extra locking parts needed. Meets QC/T 355-1999 (auto standards). Good for cars, bikes, anything that rattles. Just crank them down and they stay put. Simple, sturdy.
Both End Threaded Studs
For both‑end fastening, China Xiaoguo® Both End Threaded Studs have clean threads on each side with a solid center section. Carbon steel or grade 8.8 alloy, rolled threads for smooth fit. Good for flanges, machinery mounts, structural joints. Both End Threaded Studs Price list is available—just tell us sizes and quantity.
Weather Resistant Galvanized Steel Wire
Weather Resistant Galvanized Steel Wire, for which the engineering team at Xiaoguo® develops customized solutions for manufacturers with specific cable design requirements, has a zinc coating for optical cables that provides essential corrosion resistance, significantly extending the cable's service life in harsh environments.
Square Nut With Large Across Flats
Xiaoguo® Square nut with large across flats is specially designed for industrial assembly and maintenance. These nuts are precisely threaded and easy to install. As your trusted Chinese manufacturer, we offer bulk order discounts and detailed price lists for your convenience.
- Related Blog
- Reviews
