The head is as smooth as jade and feels smooth to the touch. It glides smoothly when used, neither scratching the wood surface nor leaving dents, making your operation safer and easier. The smooth and rounded head design effectively avoids scratching or embedding into the wood, ensuring safe use.
For express delivery services, for domestic orders, we will cooperate with local courier companies - usually you will receive the goods within 2 to 3 days. International orders are sent via DHL, and it takes approximately 5 to 7 days. The shipping fee starts at $8, and orders over $200 are free of charge.
We pack each set of Quality Engineered Round Head Bolts in a sturdy cardboard box, which is filled with foam material to prevent damage during transportation. These boxes are also wrapped in plastic to prevent moisture.
Before shipping, we will inspect each bolt - we will test the threads to ensure the cutting method is correct and conduct strength tests to confirm its durability. All our bolts have been inspected and have obtained ISO 9001 certification, so you can rest assured that they can withstand the test.
Quality Engineered Round Head Bolts are often used in furniture manufacturing scenarios. Their core function is to connect key components such as table legs and sofa frames to ensure a stable structure. They come in two colors: silver (stainless steel) and black (electroplated), allowing them to match different styles of furniture.
We have two shipping options, the standard one takes 4 to 6 days and costs $5 to $15. Fast shipping takes 2 to 3 days and costs between $12 and $25. If you order more than 500 bolts, you will enjoy a 10% discount on the entire order - including shipping.
The plastic box used to house these bolts protects them from scratches and prevents moisture from entering through a sealed structure. We inspect the raw materials and measure each bolt to ensure the head size and length meet the standards. Before shipping, each bolt is tested for strength, and we will also provide ASTM B18.2.1 certification to let you know it meets the standard requirements.
Our Quality Engineered Round Head Bolts are made of several materials, such as carbon steel, stainless steel (commonly used types such as 304 and 316 are available) and alloy steel. Just tell us which material you want. To ensure quality, we conduct special tests on each batch of products to ensure their strength and reliable performance. All products meet international standards, so you can use these bolts without worry in various projects.
Mon | M5 | M6 | M8 | M10 | M12 | M16 | M20 |
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
dk max | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
dk min | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 |
ds max | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
ds min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 |
k1 max | 4.1 | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
k1 min | 2.9 | 3.4 | 4.4 | 5.4 | 7.25 | 11.1 | 14.1 |
k max | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
k min | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.05 | 9.95 |
r max | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 |
s max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
s min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 |