It is a spring-shaped coil made from wire material, which can be inserted into a tapped base material to reinforce the screw threads.
Using bolts on base materials with low shear strength carries a risk of thread damage; however, by using this product, the risk of complete replacement of the product during thread repair is prevented. Additionally, when fastening with iron bolts, the risk of thread destruction is reduced, contributing to a decrease in defect rates, and an increase in pull-out load of approximately 40% is expected for unreinforced threads. 【Features】 ■ Prevents the risk of complete replacement of the product during thread repair ■ Reduces the risk of thread destruction when fastening with iron bolts ■ Contributes to a reduction in defect rates ■ Expected increase in pull-out load of approximately 40% for unreinforced threads ■ Can keep costs to a minimum ■ Supports automatic assembly ■ Available in various types with and without tangs *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Active Scenes】 ■ Automotive aluminum parts (battery trays, shock towers, gear housings) ■ Magnesium parts ■ Bearings for wind power generation ■ Transport containers for nuclear waste ■ Aircraft engines ■ Main wings, etc. ■ Active as repair parts to prepare for issues such as corrosion and loosening due to damage by reinforcing the threads of metal materials with low shear strength. * Compatible sizes can flexibly accommodate approximately M3 to M120. * For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
【Purpose】 ■ As reinforcement for screw threads *For more details, please refer to the PDF document or feel free to contact us.
catalog（2）
Download All Catalogs
Company information
Belhof Corporation, headquartered in Bielefeld, Northern Germany, has been in operation for 145 years. We are experts in joining and fastening technologies that contribute to weight reduction, dissimilar material bonding, reduction of component count, vibration dampening, automation, and reinforcement of threaded sections. In Europe, we have received numerous adoptions from various OEMs and Tier suppliers. We encourage you to utilize our innovative technologies in your development and production processes. In Japan, we have a development base in Nagoya, where SPR evaluation tests can be conducted. Recently, we have received many inquiries regarding dissimilar material bonding with aluminum die casting, blind nuts with sealing functions for battery trays, and reinforcement of threaded sections. We can also propose automation solutions for these applications. Please feel free to consult with us.