General Purpose Round Head Bolts are commonly used in HVAC systems for installing components such as ducts and air conditioning equipment. We offer bolts made of galvanized steel (suitable for indoor use) and stainless steel bolts (more suitable for outdoor environments).
If the bolts are in stock, we usually ship them within 24 hours. The delivery time in most cities is 3 to 4 days. The shipping cost depends on the size of the space occupied by your order - orders exceeding 1 cubic meter can enjoy a 30% discount on shipping costs.
The bolts come in stackable boxes lined with foam to prevent scratches. We also inspect the quality, such as testing the threads to ensure they are secure enough to withstand high pressure. Every bolt is measured before shipment and is certified to ASME B18.2.1, so you can rest assured they comply with industry regulations.
General Purpose Round Head Bolts are highly suitable for the assembly of amusement facilities, such as swings and slides. They are made of lead-free 304 stainless steel and are safe for children. The smooth round head part has no sharp edges.
If you are in a hurry, we offer a fast delivery service (2-3 days, with a cost ranging from $15 to $30); if you don't need to receive the goods so quickly, we provide a standard delivery service (6-9 days, with a cost ranging from $8 to $22). Ordering more than 1500 bolts entitles you to free delivery service.
These bolts are classified by size and packed in child-safe boxes - there are no loose small parts inside. We will test them to ensure they can withstand sufficient weight and check for any rough edges. Every batch of products will be inspected before leaving the factory, and after inspection, they will meet the ASTM F1487 amusement park safety standard.
Mon | #10 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 5/8 | 3/4 | 7/8 | 1 |
P | 24|32 | 20|28|32 | 18|24|32 | 16|24|32 | 14|20|28 | 13|20|28 | 11|18|24 | 10|16|20 | 9|14|20 | 8|12|20 |
ds max | 0.199 | 0.26 | 0.324 | 0.388 | 0.452 | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 |
ds min | 0.159 | 0.213 | 0.272 | 0.329 | 0.385 | 0.444 | 0.559 | 0.678 | 0.795 | 0.91 |
dk max | 0.469 | 0.594 | 0.719 | 0.844 | 0.969 | 1.094 | 1.344 | 1.594 | 1.844 | 2.094 |
dk min | 0.436 | 0.563 | 0.688 | 0.782 | 0.907 | 1.032 | 1.219 | 1.469 | 1.719 | 1.969 |
k max | 0.114 | 0.145 | 0.176 | 0.208 | 0.239 | 0.27 | 0.344 | 0.406 | 0.459 | 0.531 |
k min | 0.094 | 0.125 | 0.156 | 0.188 | 0.219 | 0.25 | 0.313 | 0.375 | 0.438 | 0.5 |
s max | 0.199 | 0.26 | 0.324 | 0.388 | 0.452 | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 |
s min | 0.185 | 0.245 | 0.307 | 0.368 | 0.431 | 0.492 | 0.616 | 0.741 | 0.865 | 0.99 |
k1 max | 0.125 | 0.156 | 0.187 | 0.219 | 0.25 | 0.281 | 0.344 | 0.406 | 0.469 | 0.531 |
k1 min | 0.094 | 0.125 | 0.156 | 0.188 | 0.219 | 0.25 | 0.313 | 0.375 | 0.438 | 0.5 |
r max | 0.031 |
0.031 |
0.031 |
0.031 |
0.031 |
0.031 |
0.062 |
0.062 |
0.062 |
0.062 |
All of our General Purpose Round Head Bolts comply with major international standards, such as the ISO 8676 standard for metric dimensions and the ASTM A307 standard for carbon steel types. You will be given a certificate for each order, which states the materials used, the strength level, and how it is made. This ensures our bolts comply with regulations in Europe, the US and elsewhere, and are suitable for key industries such as automotive, aerospace, and construction, where compliance with standards is a core requirement.