12.9 grade carbon steel hexagon bolt black cylindrical head cup head knurling high strength hexagon socket head cap screw wholesale

Small-scale operation with minimal profits; if the products are damaged upon sale, you can take photos and contact customer service for after-sales assistance. Due to the large variety of styles, some items may be out of stock. If unavailable, and no contact can be made with the customer, we will send the available items first. For items out of stock, a refund will be provided through customer service. Our store does not support returns due to poor quality or inability to sell. Note that the 7-day no-reason return policy is only applicable to individual self-use customers. Wholesale customers who receive samples are not eligible for the 7-day no-reason policy. Thank you for your cooperation. The prices at our shop do not include invoicing; if invoicing or customization is required, please contact the manager via WeChat.