Last Updated： Aggregation Period:Mar 04, 2026～Mar 31, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Mar 04, 2026～Mar 31, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Mar 04, 2026～Mar 31, 2026
This ranking is based on the number of page views on our site.
61～72 item / All 72 items
We respond to your needs for custom-made cosmetic bolts and nuts.
We will manufacture decorative bolt nuts by machining from SUS303 material and brass rods. The head part will be provided with a mirror finish.
Applicable from small size (M3) to large size! Customization according to needs is possible.
"BOA LOCK" is a special bolt/nut that prevents loosening. It is applicable in all industries where loosening is a concern, including automotive, electronics, construction, machinery, aerospace, shipbuilding, and nuclear power. We mainly do business with KORAIL, Korea Electric Power Corporation, Samsung Heavy Industries, Daewoo Shipbuilding & Marine Engineering, Hyundai Motor Company, and other public enterprises and large corporations in Korea. 【Features】 ■ Competitive pricing due to efficient product development and reduced manufacturing costs ■ Ensures reliability, stability, and high efficiency ■ Applicable from small sizes (M3) to large sizes ■ Customizable to meet customer needs *For more details, please refer to the PDF document or feel free to contact us.
Supports many standards including MIL, AMS, MS, NAS, AN, AS, and NASM!
MIL, AMS, MS, NAS, AN, AS, NASM and many other standards supported!!! Yura Sansho Co., Ltd., a supplier of industrial fasteners, proposes solutions to all fastening-related issues, including high strength, heat resistance, corrosion resistance, and loosening, as a technical trading company. We supply the optimal products tailored to customer needs, from short delivery times and small lots to long-term and large-scale demands. For more details, please contact us or refer to our catalog.
Bolts and nuts made of graphite-carbon with excellent chemical resistance.
In the chemical plant industry, the durability of components used in highly corrosive environments is a significant challenge. Particularly in chemical reaction processes under high temperature and high pressure, the corrosion of bolts and nuts can reduce the safety and operational efficiency of the equipment. Our graphite bolts and nuts are made from a graphite-carbon material that excels in chemical resistance, making them ideal for use in corrosive environments. 【Application Scenarios】 - Fixing piping in chemical plants - Securing reaction vessels - Fixing equipment that handles corrosive fluids 【Benefits of Implementation】 - Suppression of deterioration of bolts and nuts due to corrosion - Contribution to the longevity of equipment - Reduction of maintenance costs
Heat-resistant bolts and nuts for fixing assembled trays and furnace walls.
In the electric furnace industry, high heat resistance and reliability are required for securing components in high-temperature environments. It is particularly important to withstand temperature changes and vibrations within the furnace while maintaining stable performance over long periods. Conventional metal bolts and nuts may face issues such as deterioration due to thermal expansion and oxidation, as well as a decrease in strength. Our graphite bolts and nuts possess excellent heat resistance and chemical resistance, contributing to the stable operation of electric furnaces. 【Usage Scenarios】 - Securing trays and furnace walls inside electric furnaces - Fixing components in high-temperature environments - Securing materials in heat treatment processes 【Benefits of Implementation】 - High heat resistance contributes to longer lifespan - Self-lubricating properties allow for smooth attachment and detachment - Chemical resistance helps suppress corrosion - Custom-made options provide optimal sizes
Fixed parts made of graphite carbon that contribute to atmosphere control.
In the metal heat treatment industry, the deterioration caused by thermal expansion and chemical reactions during the fixation of parts in high-temperature environments is a challenge. Particularly in furnaces where atmosphere control is necessary, components with excellent heat resistance and chemical resistance are required. Graphite bolts and nuts address these challenges and support a stable heat treatment process. 【Usage Scenarios】 - Fixation of parts in high-temperature environments - Inside furnaces requiring atmosphere control - Suppression of distortion due to thermal expansion - Environments requiring chemical resistance 【Benefits of Implementation】 - Suppression of deformation due to heat - Prevention of atmospheric contamination inside the furnace - Long-term usability - Assurance of stable heat treatment quality
Prevents detachment during tightening with built-in permanent magnets!" "Increases work efficiency!" "Reduces loss!
Smart bolts and nuts prevent loosening during tightening due to permanent magnets embedded in the bolts and nuts. They automatically attach to the target object using magnetic force. 【Benefits】 - Work can be done with one hand, providing stability during tightening processes at heights. - Reduces the risk of injury from workers or bolts falling. - Workers can tighten with one hand while securing their safety with the other hand. For more details, please contact us or refer to the catalog.
Introducing how to deal with a seized screw in a blog format!
No matter what measures are taken, it is difficult to completely prevent screw seizing, which is quite a troubling issue. So, what should be done when seizing occurs? "The most reliable method is to cut and destroy the seized bolt or nut," but actually cutting it can be quite challenging. It may depend on the screw size, but the task can take several tens of minutes and involves risks. Moreover, if other components are damaged in the process, it could be a serious problem. Therefore, this should be considered a last resort. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*
HLN (Hard Lock Nut) / HLB (Hard Lock Bearing Nut)
It has a strong anti-loosening effect that is not found in other lock nuts, as well as excellent workability and ease of attachment and detachment.
For fixation in high-temperature environments. Bolts and nuts made of graphite carbon.
In the semiconductor manufacturing industry, securing components in high-temperature environments is essential. Particularly for components that are susceptible to thermal expansion and contraction, stable holding power and heat resistance are crucial. Conventional metal bolts and nuts may face issues such as strength degradation and corrosion due to oxidation at high temperatures. Our graphite bolts and nuts possess excellent heat resistance and chemical resistance, providing stable performance even in high-temperature environments. 【Application Scenarios】 - Securing furnace walls within semiconductor manufacturing equipment - Securing trays in high-temperature environments - Other component securing in high-temperature environments 【Benefits of Implementation】 - Ensuring stable holding power in high-temperature environments - Extending the lifespan of components - Improving equipment operational rates
Bolts and nuts made of graphite carbon that achieve low outgassing.
In the field of vacuum devices, it is important to suppress outgassing from components in order to maintain high vacuum levels. Outgassing can lower the vacuum quality and impair the performance of the device. This is especially critical for vacuum devices used in high-temperature environments, where measures against outgassing are essential. Our graphite bolts and nuts are made from graphite-carbon materials with low outgassing characteristics, making them suitable for use in vacuum environments. 【Usage Scenarios】 - Fixing within vacuum chambers - Securing components in high-temperature environments - Applications that are sensitive to outgassing 【Benefits of Implementation】 - Maintenance of high vacuum levels - Improvement of device performance - Achievement of stable operation
Bolts and nuts made of graphite carbon that contribute to exhaust gas measures.
In the automotive industry, with the strengthening of exhaust gas regulations, the durability of parts used in high-temperature environments is becoming increasingly important. In particular, components in the exhaust system require materials that are resistant to thermal expansion and corrosion. Graphite bolts and nuts excel in heat resistance and chemical resistance, contributing to the secure fastening of parts in exhaust gas measures. 【Application Scenarios】 - Fastening exhaust system components - Fastening parts in high-temperature environments 【Benefits of Implementation】 - Improved durability of exhaust system components - Prevention of exhaust gas leaks - Reduction in the frequency of parts replacement
