bolt×ケー・エフ・シー - List of Manufacturers, Suppliers, Companies and Products

bolt Product List

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Saber EX Lock Bolt

Saber EX Lock Bolt

The expansion-type rock bolt made of reinforcing steel pipes, developed by K.F.C. Co., Ltd., contributes to the longevity of tunnels.

This is a new concept tunnel rock bolt that expands due to high water pressure and has a mechanism for securing itself to the surrounding rock. 【Features】 ★ Reliable construction without filling materials ★ It secures itself to the surrounding rock with the expansion pressure of the steel pipe, without using filling materials like mortar. Even in areas with water inflow, it secures itself reliably without the influence of cement component leakage. ★ Speedy construction ★ Since no fixing materials like mortar are needed and it secures itself simultaneously with construction, it contributes to shortening the construction cycle and achieving early strength development. ★ High corrosion-resistant rock bolt ★ The entire length of the bolt is treated with high corrosion-resistant plating, boasting high durability. This contributes to the long lifespan of tunnel structures. *For more details, please download the PDF or contact us.

  • Tunnel Materials

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Mf bolt

Mf bolt

A bolt with a locking feature that achieves maintenance-free operation.

The bolt itself has a function to prevent loosening. Even when tightened to a value approximately 20% lower than the traditionally recommended torque, it is designed to prevent loosening. The anti-loosening function has passed impact and vibration tests in accordance with NAS3350 and 3354 standards.

  • Bridge Materials

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SK Safety Bolt

SK Safety Bolt

Safety measures with loosening prevention and fall protection! Length adjustment below the neck and processing for U-bolts are also possible.

This product is a hex bolt with two functions: preventing loosening and preventing falling. It uses a locking K nut. In the event of loosening, the nut is stopped by the stepped section applied to the anchor screw part, providing a "fall prevention function." 【Features】 ■ Uses a locking K nut for the included nut to prevent loosening after tightening. ■ Even if the nut loosens, it will be stopped by the stepped section of the bolt body. ■ Adjustable shank length and can be processed into a U-bolt. ■ Patent No. 3354910. *For more details, please refer to the PDF document or feel free to contact us.

  • Railway Construction
  • Road construction
  • others

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Twisted Bar Steel Lock Bolt "SN Twist Bolt"

Twisted Bar Steel Lock Bolt "SN Twist Bolt"

It prevents the occurrence of voids on the back side and achieves good adhesion along the entire length of the bolt.

The "SN Twist Bolt" is a twisted rebar lock bolt that has been cold twisted from specially manufactured high-tensile deformed steel to further enhance its strength. When this product is inserted into a borehole filled with mortar, the spiral ribs and cross ribs rotate the mortar, improving the ease of insertion. As a result, it prevents voids from forming behind the ribs and joints, ensuring good adhesion along the entire length of the bolt. 【Features】 ■ Forms a surface shape that is easy to insert into boreholes filled with mortar ■ Effectively prevents the formation of voids between the mortar and the bolt ■ Adhesion performance with mortar is superior to that of deformed steel ■ Rolled threads based on JIS-B-0205 standard metric coarse threads *For more details, please refer to the PDF materials or feel free to contact us.

  • Work tools

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Deformed steel bar rock bolt

Deformed steel bar rock bolt

Conical tip shape! We are rolling metric coarse threads based on JIS B0205.

This product is a lock bolt made from high-strength deformed steel SD345 as specified in JIS G3112. It is processed with rolled metric threads based on JIS B0205. Additionally, the tip shape is conical. 【Features】 - Made from high-strength deformed steel SD345 as specified in JIS G3112 - Rolled metric threads based on JIS B0205 - Conical tip shape *For more details, please refer to the PDF document or feel free to contact us.

  • Work tools

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Swellex Premium Line

Swellex Premium Line

A new series that improves endurance and breaking strength. Required for rock reinforcement where a specified cross-section must be secured.

This product is suitable for conditions that require higher elasticity (when the rock bolt needs to function within the elastic range and reduce deformation in the excavation area more effectively). With the improvement in yield strength and fracture strength, the excellent features of "Suerex" can now be utilized under greater load conditions. The combination of material technology and Suerex bolt functionality enables reliable installation, support functions that are exhibited throughout the entire length of the bolt immediately after installation, and the ability to respond to harsh excavation conditions. 【Features】 ■ Quality can be verified with each installation ■ Safe and simple installation work ■ Exhibits support capacity as per specifications immediately after installation ■ Does not require harmful chemicals ■ Corrosion protection suitable for long-term support ■ Not affected by vibrations from blasting ■ Reduction in working time is possible *For more details, please refer to the PDF materials or feel free to contact us.

  • Work tools

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GFRP lock bolt

GFRP lock bolt

Connection using joint couplers is possible! Solid and hollow types are available in the lineup.

We handle the tunnel excavation material "GFRP Rock Bolt." We offer the solid type "CG22S," which allows for nut attachment and connection via joint couplers, and the "CGR32," which utilizes its hollow section to inject anchoring materials or ground reinforcement materials. These can be used for applications such as middle wall construction methods, face reinforcement bolts, and injection pipes for planned excavation areas. 【Features (CG22S)】 ■ Solid type fully threaded GFRP rock bolt ■ Allows for nut attachment and connection via joint couplers ■ Suitable for applications such as middle wall construction methods and pattern bolts for advanced guide piles *For more details, please refer to the PDF materials or feel free to contact us.

  • Work tools

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IBO lock bolt

IBO lock bolt

The entire length is rolled with R32 rope screws to ensure slime discharge performance and stable adhesion performance!

The "IBO Lock Bolt" is a hollow lock bolt that has been rolled with R32 threads along its entire length, making it very easy to handle on site. It is effective not only as a self-drilling bolt but also as an injection bolt utilizing its hollow structure. It can be applied to a wide range of uses, including pattern bolts, fore-poling, tunnel repairs, LW urethane, and slope reinforcement. 【Features】 ■ R32 rope threads rolled along the entire length ■ Ensures slime discharge performance and stable adhesion performance ■ Allows simultaneous drilling and bolt insertion operations, reducing cycle time ■ Pursues cost-effectiveness through bit selection according to the target ground ■ Applicable to a wide range of uses *For more details, please refer to the PDF document or feel free to contact us.

  • Work tools

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High corrosion-resistant IBO-Z lock bolt

High corrosion-resistant IBO-Z lock bolt

Improved rust prevention performance! Introducing a lock bolt that is also effective as an injection bolt by utilizing the hollow space.

The "IBO-Z" is a hollow lock bolt with R32 threads rolled along its entire length, making it very easy to handle on-site. It is effective not only as a self-drilling bolt but also as an injection bolt utilizing its hollow design. Additionally, the use of ZAM significantly enhances its corrosion resistance. It is suitable for a wide range of applications, including pattern bolts, fore-poling, and tunnel repairs. 【Features】 ■ Pursues cost-effectiveness through bit selection based on the target ground. ■ Reduces cycle time by allowing drilling and bolt insertion to be performed simultaneously. ■ R32 rope threads rolled along the entire length ensure slime discharge performance and stable adhesion. ■ Adaptable to a wide range of applications. *For more details, please refer to the PDF materials or feel free to contact us.

  • Work tools
  • Safety and consumables

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One-sided bolt, safety one-sided bolt

One-sided bolt, safety one-sided bolt

Double fall prevention product: A bolt with a locking nut that can be installed from one side.

By simply tightening with a dedicated driver, speedy installation from one side is possible. K nuts with anti-loosening features are used. Installation can be done without damaging the base material.

  • ワンサイド(カットタイプ).JPG
  • ワンサイド(カットタイプ　薄板用).JPG
  • セーフティワンサイド(二重落下防止対策仕様).JPG
  • others

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One-site bolt / Safety one-site bolt

One-site bolt / Safety one-site bolt

Just tighten it with a dedicated driver! Quick installation from one side is possible.

The "One-Site Bolt" is a bolt with a locking nut that can be installed from one side. The nut uses a locking K nut, allowing installation without damaging the base material. We also offer the "Safety One-Site Bolt," which features double fall prevention measures. 【Features】 ■ Ease of installation ■ Safety measures ■ One-sided installation *For more details, please refer to the PDF document or feel free to contact us.

  • Bridge Materials
  • others

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RPE rock bolt

RPE rock bolt

Instantly anchored in the ground! Introducing rock bolts that eliminate the "uncertainty of life"!

The steel pipe expansion type friction lock bolt has been adopted as a solution for tunnel construction projects under difficult geological conditions. Its weakness is the "uncertainty of lifespan" of the thin-walled steel pipe that is fixed in direct contact with the geological formation. This product addresses that weakness. The introduction of the steel pipe expansion type friction lock bolt, which is expected to have a semi-permanent function. 【Features】 ■ Higher hardness and less prone to scratches compared to other galvanized products ■ No peeling of the coating layer due to expansion during construction ■ Exhibits excellent corrosion resistance under geological conditions with a pH of 4 to 12, maintaining reinforcement effects over the long term ■ Applies a new material with excellent elongation properties, excelling in deformation characteristics *For more details, please refer to the PDF document or feel free to contact us.

  • Work tools
  • Tunnel Materials

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High Durability RPE Rock Bolt

High Durability RPE Rock Bolt

High durability and instant fixation! It can demonstrate displacement suppression effects even against large ground pressure.

This product is a rock bolt that can be applied under high ground pressure due to its high strength (290 kN capacity). The increase in strength allows for a reduction in the number of bolts, improving construction speed. After installation, the anchoring force is secured instantly, contributing to rapid construction. Additionally, it can be tightened using nuts and square washers. 【Features】 ■ Applicable under high ground pressure due to high strength (290 kN capacity) ■ Improvement in construction speed by reducing the number of bolts due to increased strength ■ Instant securing of anchoring force after installation, contributing to rapid construction ■ Tightening possible with nuts and square washers *For more details, please refer to the PDF materials or feel free to contact us.

  • Work tools

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Super Spiral Bolt SP24

Super Spiral Bolt SP24

The head protection materials (cap/mat) for waterproof sheet installation are no longer necessary.

The "Super Spiral Bolt SP24" is a high-strength locking bolt that inherits the excellent features of the "SN Twist Bolt." It features a newly designed special rib and screw section that are simultaneously formed during the round steel rolling process, resulting in no cross-sectional defects in the screw section and consistent strength throughout its length. 【Excellent Characteristics】 - It uses high-strength material SD685, achieving a high yield load of over 297 kN while being even lighter (3.4 kg/m) than the SN Twist Bolt. - By maintaining the same material diameter and reproducing the surface shape of the SN Twist Bolt, the insertion resistance is equivalent to that of the SN Twist Bolt. - It inherits the excellent anchoring characteristics of the SN Twist Bolt, with high adhesion toughness against ground deformation during the early age of the anchoring material, making it less prone to adhesion failure. - The adoption of the special-shaped nut "S Nut" reduces the protrusion of the nut and bolt, eliminating the need for protective materials (caps/mats) during waterproof sheet installation. *For more details, please refer to the PDF document or feel free to contact us.*

  • Work tools

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Lock bolt "CT bolt"

Lock bolt "CT bolt"

Easily inject and fill grouts of various viscosities! Long-term stable support that can be done manually or automated.

The "CT Bolt" is a hybrid type rock bolt that is temporarily installed and later permanently secured with grout. It allows for quick and easy installation, and various viscosities of grout can be easily injected and filled. Additionally, the polyethylene sleeve protects the bolt from corrosion. Manual installation is possible, and automated installation can also be achieved using a specially developed rock bolt setter. 【Features】 ■ Hybrid type rock bolt ■ Quick and easy installation ■ Easy injection and filling of various viscosities of grout ■ Special hemispherical dome head ■ Unique anti-corrosion structure *For more details, please refer to the PDF document or feel free to contact us.

  • Work tools

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