List of Screw products
- classification:Screw
406~450 item / All 4959 items
We provide manufacturing technology for neutralization, esterification, sulfonation, phosphorylation, polycondensation reactions, powder mixing, emulsification, and dispersion, etc. *We can also handl...
- Contract manufacturing
Do you have any concerns about contract manufacturing of various chemical products?
We would like to introduce the contract manufacturing services provided by Riten Chemical Co., Ltd. We are a chemical manufacturer based in Kyoto with 70 years of experience. Since our establishment, we have been developing, manufacturing, and selling various surfactants used in the textile and paper industries. Based on the technology and development capabilities we have cultivated over the years, we accept contract manufacturing of various chemical products, so please feel free to contact us. 【Contract Manufacturing Achievements】 ■ Construction waterproofing agents ■ Plant growth promoters ■ Construction waterproofing materials ■ Greening-related agents ■ Chemicals for the electronics industry ■ Wastewater treatment agents ■ Industrial preservatives ■ Special surfactants... We provide more detailed information through related products and catalogs.
Heat resistant up to 1200℃. We will custom-make high-performance insulation covers that ensure safety in the working environment!
- Glass
Improving mass production increases lead time reduction! Achieving cost reduction through weight reduction as well!
- gear
- Screw
- bolt
Achieve extremely small and complex shapes without machining! Please feel free to contact us regarding metal parts.
- nozzle
- nut
- Metal bearings
Would you like to integrate multiple parts from different processes through precision casting?
- nut
- shaft
- Metal bearings
Leave cost reduction and quality measures to us!
- nut
- bolt
- Other machine elements
Cost reduction, prototyping, shortening delivery times... We will respond comprehensively across a wide range of areas to solve your challenges!
- Other machine elements
- nut
- gear
I was involved in the production of the "touchable" model of Kencho-ji Temple in Kamakura City.
The "touchable" model of Kenchoji Temple was conceived by the Universal Picture Book Library UniLeaf (represented by Toshie Oshima, located in Hayama, Kanagawa Prefecture) with the concept of allowing visually impaired individuals to feel historical buildings with their hands, enabling them to share the excitement of travel together. Subsequently, it received support from many donors through grants from the "Support Each Other Fund" and crowdfunding, leading to its production. To realize the concept of feeling historical buildings by touch, a 1/50 scale miniature of the Kenchoji Temple Buddha Hall was meticulously recreated in bronze, paying close attention to detail. Our company was responsible for the production of the castings, which consist of approximately 30 parts. This in-house technology utilizes a casting method called "Digital Cast," which excels in producing unique, one-of-a-kind items without the need for mold fabrication. The model has been permanently installed in front of the Kenchoji Temple Buddha Hall since the day after the ceremony, allowing visitors to touch it freely. If you visit Kenchoji Temple in Kamakura, please take a look. [Manufacturing Responsible] Prototype resin model production and casting machining: JMC Corporation Casting (moldless casting "Digital Cast"): Castem Corporation
A nut that can tighten a large bolt with "1/100 of a small torque."
- nut
The tension nut won the 36th "Small and Medium Enterprises Excellent New Technology and New Product Award."
The "36th Small and Medium Enterprises Excellent New Technology and New Product Award," hosted by the Resona Small and Medium Enterprises Promotion Foundation and the Nikkan Kogyo Shimbun, has awarded a Encouragement Prize to Japan Plarad's "Tension Nut." About the Tension Nut: For large bolts ranging from M30 to M100, the tightening torque can reach several thousand to tens of thousands of Nm, requiring large hydraulic tools or electric tools. However, the Tension Nut allows for easy tightening of large bolts using only a hand torque wrench by tightening the Hertz screw without the need for electricity or air. The special structure of the Tension Nut, with its "slope disc," generates higher axial force as it resists the reverse rotation that would loosen the bolt, making it a nut that does not loosen. About the Small and Medium Enterprises Excellent New Technology and New Product Award: The Resona Small and Medium Enterprises Promotion Foundation, in collaboration with the Nikkan Kogyo Shimbun, conducts awards for excellent new technologies and new products with the aim of promoting the technology of small and medium enterprises and contributing to the development of Japanese industry. Awards are given for outstanding new technologies and products, including the Minister of Small and Medium Enterprises Agency Award (General Category), the Chairman of the Organization for Small & Medium Enterprises and Regional Innovation Award (Software Category), Excellent Award, Good Award, and Encouragement Award.
No need for electric or air power sources! No pumps or hoses required. Easily tighten large bolts with just a hex wrench.
- Hydraulic Equipment
- Other work tools
- nut
A nut that does not loosen even after 1 million vibration tests (3D vertical and horizontal)! Compatible bolt sizes: M14 to M100.
- nut
- bolt
- Other work tools
Released the bolt anti-rotation washer "Tsure Zero Washer."
Nippon Pralado Co., Ltd. has released the "Tsure Zero Washer," a washer designed to prevent the rotation of bolts with diameters ranging from M12 to M72. ■ Features of the Anti-Rotation Washer "Tsure Zero Washer" 1. A washer that prevents bolt rotation Unlike washers that utilize surface irregularities from knurled processing to create friction resistance, the anti-rotation Tsure Zero Washer has a special structure that changes the equivalent friction diameter. It is currently under international patent application. The conical shape on the back and the hexagonal design increase the effective friction diameter against the seating surface, resulting in the reaction torque from the bolt head being more than twice as large as the tightening torque of the nut. This prevents the washer from rotating and stops the bolt head from rotating together. As the tightening torque of the nut increases, the reaction torque from the bolt head also increases, ensuring that the bolt does not rotate until the tightening is complete. 2. Significant reduction in bolt tightening and loosening time, manageable by one person By simply replacing standard flat washers with the Tsure Zero Washer, there is no need for cumbersome anti-rotation tools or backup wrenches, leading to a substantial reduction in the time required for bolt tightening operations.
Washer for completely preventing the simultaneous rotation of bolts, suitable for M12 to M72.
- bolt
- nut
- Assembly Jig
Released the bolt anti-rotation washer "Tsure Zero Washer."
Nippon Pralado Co., Ltd. has released the "Tsure Zero Washer," a washer designed to prevent the rotation of bolts with diameters ranging from M12 to M72. ■ Features of the Anti-Rotation Washer "Tsure Zero Washer" 1. A washer that prevents bolt rotation Unlike washers that utilize surface irregularities from knurled processing to create friction resistance, the anti-rotation Tsure Zero Washer has a special structure that changes the equivalent friction diameter. It is currently under international patent application. The conical shape on the back and the hexagonal design increase the effective friction diameter against the seating surface, resulting in the reaction torque from the bolt head being more than twice as large as the tightening torque of the nut. This prevents the washer from rotating and stops the bolt head from rotating together. As the tightening torque of the nut increases, the reaction torque from the bolt head also increases, ensuring that the bolt does not rotate until the tightening is complete. 2. Significant reduction in bolt tightening and loosening time, manageable by one person By simply replacing standard flat washers with the Tsure Zero Washer, there is no need for cumbersome anti-rotation tools or backup wrenches, leading to a substantial reduction in the time required for bolt tightening operations.
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
Preventing cam-out and improving work efficiency. Supporting the miniaturization of electronic devices.
- bolt
Excellent cost performance, achieving shorter delivery times through standardization! Introducing low-noise positioning lead screws.
- bolt
Regarding the exhibition at the Mechanical Technology Elements Exhibition 2025.
We will be exhibiting at the Machine Technology Elements Exhibition 2025, which will be held at Makuhari Messe from July 9 to July 11, 2025. We invite you to visit our booth during your visit. Exhibition Hall: Hall 6 Booth Number: 33-15 Exhibited Products: Miniature Guide LMBM Series Plastic Sliding Screw JS Series Rolled Ball Screw RBSK Series Precision Ball Screw FTBS Series Linear Bearings Various Types
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
The materials include trivalent white, trivalent black, zinc black, and other types of iron and stainless steel!
- bolt
- Screw
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
The screw sizes available include M1.6, M2, M3, M4, M5, M6, and many more!
- bolt
- Screw
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
The materials are chrome, nickel, black zinc, tin cobalt, and other iron and stainless steel!
- bolt
- Screw
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
Materials such as cobalt, chrome, iron, and stainless steel are available!
- bolt
- Screw
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
Cap screws made of materials such as SUS316L, SUS310S, SUS430, titanium, and 64 titanium!
- bolt
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
The screw sizes available include M36, M42, M48, M56, M64, M72, and many more!
- bolt
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
Pitch is 0.5 to 4.5! Introducing all-thread screws made of iron, brass, stainless steel, SUS316L, titanium, and more.
- bolt
Established a molding method that does not cut carbon fibers! This is a carbon bolt with excellent chemical resistance, lightweight, and high strength properties [patent obtained].
- bolt
Introducing a product that allows for easy attachment of a nut from one side on thin plates where tapping is difficult!
- nut
It adheres firmly to the base material, achieving high bonding strength! A thick diameter of φ16mm is also available in the lineup!
- bolt
Obtained building technology examination certification! High rust resistance, cost reduction, and joint strength have been proven.
- bolt
Jointing of columns with column connectors is possible without welding! A construction method using Hack Takakawa side bolts.
- bolt
The fracture surface is also reliable. It is a stainless steel mandrel.
- bolt
Excellent water tightness between the base material and the rivet! Rivets that provide high clamping force.
- nut
Introducing a bolt that features long-term rust prevention, corrosion resistance, and is designed not to loosen, consisting of three structures!
- bolt
Significantly reduced construction time! Introducing a two-piece high corrosion-resistant bolt with excellent torque axial force performance.
- bolt
It is a blind fastener that combines the advantages of nuts and rivets.
- nut
This is a tapping type one-sided bolt with a unique screw shape that firmly adheres to the base material, providing high joint strength. There is also a thicker diameter of φ16mm available.
- bolt
This is a high-strength one-sided bolt that can be fastened on one side in areas where standard high-strength bolts cannot be installed. It is certified by the Minister of Land, Infrastructure, Transp...
- bolt
Can be installed with commercially available impact wrenches, no special tools required! The unique screw shape achieves high strength, vibration resistance, and water tightness. 【*On-site demonstrati...
- bolt
From sales to rental, calibration and repair! Supporting on-site improvements for large bolt tightening operations.
- Torque wrench
- nut
- socket
October 2013 Issue MS Newsletter Cassette Plate
- bolt
November 2013 Issue MS Newsletter Turret Folder
- bolt
December 2013 Issue MS Newsletter Cast Iron Casing
- bolt
January 2014 Issue MS Newsletter Cement Mill Screw Hole
- bolt
February 2014 Issue MS Newsletter Pump Casing
- bolt
March 2014 Issue MS Newsletter Cast Casing
- bolt
April 2014 Issue MS Newsletter Aluminum Applicator
- bolt
October 2014 Issue MS Newsletter Cast Iron Casing Foot
- bolt
November 2014 Issue MS Newsletter Press Machine Frame
- bolt
December 2014 Issue MS Newsletter Cast Casing
- bolt