ＳＤＣ田中 List of Products and Services

Our company offers the "SDC Plasma Vacuum Heat Treatment Technology," which modifies the surfaces of materials such as stainless steel, titanium, and nickel through plasma carburizing and nitriding. This technology enhances wear resistance and galling prevention without compromising corrosion resistance. It can prevent galling and seizing during tightening without the use of lubricants, making it suitable for parts used in semiconductor manufacturing equipment, vacuum devices, and equipment for cosmetics, pharmaceuticals, and food production. It has been adopted for titanium components in the International Space Station and has a proven track record in experimental devices for gravitational wave observation, maintaining its performance even in high-temperature environments (up to 300°C). 【Features】 - Maintains strong wear resistance and galling prevention without flaking due to surface modification. - Ideal for extending the lifespan of parts used in clean rooms and vacuum environments where lubricants cannot be used. - "SDC Clean Bolts" are compatible with environments ranging from -200°C to 300°C (no contamination occurs). - Treatment of titanium achieves even higher corrosion resistance. *For more details, please refer to the materials on heat treatment technology and "SDC Clean Bolts" available for download in the catalog. Various bolts are in stock.

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We offer contract processing services such as plasma carburizing treatment, plasma nitriding treatment, and vacuum heat treatment using plasma in a vacuum furnace. SDC plasma surface hardening treatment is a special technology that allows carbon and nitrogen to penetrate the surface of metals, modifying the surface structure. So far, we have received orders from a wide range of industries, including aerospace equipment parts, exterior parts for wristwatches, pump parts, parts for caustic soda manufacturing equipment, and automotive and motorcycle parts. 【Features】 - Carburizing treatment can be performed without reducing the strength of titanium alloys. - Wear resistance and galling prevention can be achieved without compromising the corrosion resistance of stainless steel. - Suitable for environments that dislike impurities. - The hardened layer does not peel off. *For more details, please download the PDF or feel free to contact us.

• Surface treatment contract service

Our company is engaged in the initiative to utilize "PCT + GLC electrodes," which are coated with conductive PCT + GLC on a titanium substrate. Titanium metal has been expanded in application as an electrode material with excellent corrosion resistance by using platinum plating and other methods, but we expect that our unique technology will lead to the development of high-performance insoluble electrodes. It can be applied to various shapes. Please consider using it for separators in fuel cells, where demand is expected to grow in the future. [Features] ■ Thread rolling is possible after coin treatment. *For more details, please download the PDF or feel free to contact us.

• Surface treatment contract service

The "SDC Plasma Vacuum Heat Treatment Device" is a system that can be applied to surface hardening and heat treatment of various metal materials, including plasma carburizing, plasma nitriding, glass-like carbon (GLC) coating, and vacuum heat treatment. In addition to an external heat source, it uses a micro-pulse power supply to control the output voltage, current, pulse width, and voltage duration of the plasma power supply through a computer program, allowing for precise control of the workpiece temperature at a specified level during surface hardening and coating processes. A manufacturing process has been established for plasma carburized titanium alloy components that possess a uniform fine structure and high surface hardness, preventing hydrogen absorption. Furthermore, it has also become possible to form a glass-like carbon film (GLC film) on the carburized titanium surface using the same process. 【Specifications (partial)】 ■ Effective treatment zone: 600×600×1000mm ■ Gross weight: 600kg ■ Treatment temperature: up to 1200℃ ■ Atmosphere gases: vacuum/methane/propane/(acetylene)/nitrogen, etc. *For more details, please download the PDF or feel free to contact us.

• Plasma surface treatment equipment

The "SDC Clean Bolt" is a high-quality bolt and nut used in environments such as semiconductor and pharmaceutical factories, where anti-seizing measures like lubricants and plating/coating cannot be applied. It is recognized as a top-quality component and has been adopted in international projects, including the large-scale low-temperature gravitational wave telescope KAGRA. 【Features of SDC Clean Bolt】 - Treated with SDC plasma surface hardening to prevent seizing and galling during tightening. - Due to the diffusion penetration treatment, there is no concern about peeling off like with lubricants or plating. *Please refer to the PDF data of the "SDC Clean Bolt" catalog available for download.

• Etching Equipment

The "SDC Clean Bolt" is a high-quality bolt and nut used in environments such as semiconductor and pharmaceutical factories, where measures like lubricants and plating/coating to prevent seizure cannot be employed. It is designed to perform optimally even under harsh conditions and has been adopted for the international project of the large low-temperature gravitational wave telescope, KAGRA. 【Features of SDC Clean Bolt】 ■ Treated with SDC plasma surface hardening to prevent seizure and galling during tightening ■ Due to the diffusion penetration treatment, there is no concern about peeling off like lubricants or plating *Please refer to the PDF data of the "SDC Clean Bolt" catalog available for download.

• Etching Equipment

The "SDC Current Insulation Bolt" is a set of insulated hex bolts, hex nuts, flat washers, insulated washers, and color caps designed to prevent electrical contact. It is ideal for areas where the flow of electricity must be interrupted and for high-voltage insulation points. In high-voltage situations, it is necessary for the insulation running to completely cover the flange part, and the screws must also be fully tightened, which is why it is sold as a set tailored to various flanges. 【Features】 ■ Insulation effect that withstands AC 2200V (guaranteed at 220V) ■ Excellent workability in dry conditions ■ Capable of preventing chlorine corrosion ■ Effectively prevents seizing ■ Can stabilize torque coefficient values *For more details, please contact us or download the catalog.

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The "SDC Current Insulation Bolt" is a set of insulated hex bolts, hex nuts, flat washers, insulated washers, and color caps designed to prevent electrical contact. It is ideal for areas where the flow of electricity must be interrupted, such as in plants, machinery, piping flanges, electrostatic painting lines, and during dissimilar metal bonding, as well as for high-voltage insulation points. 【Features】 ■ Insulation effect that withstands AC 2200V (guaranteed for 220V) ■ Excellent workability in dry conditions ■ Capable of preventing chlorine-based corrosion ■ Effectively prevents seizing ■ Can stabilize torque coefficient values *For more details, please contact us or download the catalog.

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Free gift of materials on the "SDC Clean Bolt" case study for preventing galling of stainless steel bolts in environments where plating, coating, or lubricants cannot be used! 【Ideal solution for the following customers!】 ◎ Bolts become seized and cannot be removed, or they damage the main body... ◎ Cannot use plating or lubricants because it is used in a clean room... ◎ The threads get damaged after being tightened and removed once... ◎ Galling occurs due to use in high-temperature environments... 【For more details, please download the catalog or feel free to contact us!】

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Free gift of materials on the "SDC Clean Bolt," which prevents seizure of stainless steel bolts in environments where plating and coating cannot be used, with examples of "not seizing even in high-temperature environments"! 【Published Examples】 - Q&A from a representative of the technical department of an automobile manufacturer - Stainless steel bolts are used in high-temperature environments, but the environment is one that dislikes lubricants. - Additionally, when removed for maintenance after returning to room temperature, they sometimes become seized and cannot be removed. - They want to use "SDC Clean Bolt" to reduce equipment maintenance and maintenance costs, but can it be used in high-temperature environments? For more details, please contact us or download the catalog.

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Free materials on the "reusable" case of the 'SDC Clean Bolt' that prevents galling of stainless steel bolts in environments where plating and coating cannot be used! 【Published Cases】 - Q&A from the person in charge of the Quality Control Department of vacuum equipment - Lubricants cannot be used due to the vacuum environment - Using untreated stainless steel bolts, but the threads are damaged (roughened) after tightening and loosening once - Can the "SDC Clean Bolt" be reused? For more details, please contact us or download the catalog.

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Free gift of materials on the case study of "SDC Clean Bolt," which prevents galling of stainless steel bolts in environments where plating and coating cannot be used, without the use of lubricants! 【Published Case Studies】 - Q&A from the Safety Management Department of Food Manufacturing Equipment - Since it is used in food manufacturing equipment, lubricants and plating cannot be used - Due to cleaning, if tightened repeatedly in an untreated state, stainless steel bolts can gall - Does "SDC Clean Bolt" have any coating on the threaded surface? For more details, please contact us or download the catalog.

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Free gift of materials on the case study of "SDC Clean Bolt," which prevents seizure of stainless steel bolts in environments where plating and coating cannot be used! 【Featured Case Studies】 - Q&A from the design department of a semiconductor manufacturing equipment company - During the assembly of equipment within semiconductor manufacturing equipment, cap screws were tightened into the main body’s taps, but when removing them, the bolts seized and became stuck, sometimes damaging the main body. - Since the equipment is expensive, we want to find a solution, but are there any good products available? For more details, please contact us or download the catalog.

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We have a wide variety of screw products in pure titanium, including bolts, nuts, and cap screws, available in various types and sizes in stock at all times. We have established a quick delivery system to meet our customers' needs. We also accept orders for the manufacturing of other special processed products, as well as parts made from titanium alloys, Hastelloy, Inconel, and other nickel alloys. 【Product Lineup】 [Custom Made (Special Processed Products)] - Nickel Alloys (Hastelloy, Inconel, Monel, etc.) - SUS630, duplex stainless steel, and more For more details, please contact us or download the catalog.

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It is ideal for areas where the flow of electricity must be interrupted, such as plant machinery, piping flanges, electrostatic coating lines, and during dissimilar metal bonding, as well as for high-voltage insulation. 【Features】 ○ Insulation effect that withstands AC 2200V (guaranteed at 220V) ○ Excellent workability in dry conditions For more details, please contact us or download the catalog.

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Imported products from the USA and UK, standard items do not require molds, a wide variety of types, materials suitable for various applications, and customizable colors (optional). Custom products are made with molds created domestically. 【Product Lineup】 ○ S-Cap ○ Poly Net ○ Straight Cap ○ Bag Nut Cap ○ Insertion Plug For more details, please contact us or download the catalog.

• Other machine elements

This is the SDC bolt series that meets the requirements for corrosion resistance, anti-corrosion properties, and insulation for joining bolts. 【Features】 ○ ISO 9001 certified For more details, please contact us or download the catalog.

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We reliably prevent the weaknesses of stainless steel bolts, such as "galling and seizure," by applying SDC treatment/SDC color treatment. We have particularly received long-standing results for water supply facilities and general plants. 【Specifications】 ○Material: SUS 304 and XM-7, SUS 316 ○Standards: Bolt JIS B 1180, Nut JIS B 1181 For more details, please contact us or download the catalog.

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In clean rooms that dislike impurities, semiconductor manufacturing equipment, food and beverage-related manufacturing equipment, and cosmetic and pharmaceutical manufacturing equipment and piping joints where cleanliness is required, various surface treatments (such as plating, coating, and lubricants) may not be used as anti-seizing measures during the tightening of bolts/nuts. Conventional stainless steel bolts/nuts can experience seizing issues when tightened, but by applying our unique technology, "SDC Plasma Surface Hardening Treatment," we have developed the "SDC Clean Bolt Series," which prevents seizing without the use of any lubricants. 【Specifications】 ○ Material: SUS316L ○ Surface Treatment: SDC Plasma Surface Hardening Treatment ○ Options (custom products) For more details, please contact us or download the catalog.

• bolt

In clean rooms that dislike impurities, semiconductor manufacturing equipment, food and beverage-related manufacturing equipment, and cosmetic and pharmaceutical manufacturing equipment and piping joints where cleanliness is required, various surface treatments (such as plating, coating, and lubricants) may not be used as anti-seizing measures during the tightening of bolts/nuts. Conventional stainless steel bolts/nuts can experience seizing issues when tightened, but by applying our unique technology "SDC Plasma Surface Hardening Treatment," we have created the "SDC Clean Bolt Series," which prevents seizing without the use of any lubricants. 【Features】 ○ Does not use impurities such as lubricants or plating ○ Due to the diffusion penetration treatment, there is no concern about peeling off like with lubricants or plating For more details, please contact us or download the catalog.

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In clean rooms that dislike impurities, semiconductor manufacturing equipment, food and beverage-related manufacturing equipment, and cosmetic and pharmaceutical manufacturing equipment and piping joints where cleanliness is required, various surface treatments (such as plating, coating, and lubricants) for preventing galling may not be applicable during the tightening of bolts and nuts. Conventional stainless steel bolts and nuts can experience galling when tightened, but by applying our unique technology, "SDC Plasma Surface Hardening Treatment," we have developed the "SDC Clean Bolt Series," which prevents galling without the use of any lubricants. 【Features】 ○ Does not use impurities such as lubricants or plating ○ Due to diffusion penetration treatment, there is no concern about peeling off like lubricants or plating For more details, please contact us or download the catalog.

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The "SDC anti-corrosion bolt" features a surface treatment with SDC color on stainless steel (SUS304/316(L)) that excels in corrosion resistance, preventing chlorine-based corrosion in seawater, and provides insulation effects through the resin coating of the bolt and the glass fiber reinforced resin washer. It prevents galvanic corrosion when joining dissimilar metal pipes such as stainless steel and ductile iron pipes. It maintains high corrosion resistance, making it ideal for use in seawater environments (such as reclaimed land) and in seawater itself. 【Features】 ○ Prevents galvanic corrosion during dissimilar metal joining ○ Prevents pitting corrosion occurring in seawater and chlorine-based solutions 【For more details, please download the catalog or feel free to contact us】

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This device is a screw performance testing machine that was developed and put into practical use under the guidance of Professor Kazuo Maruyama, Honorary Professor at Tokyo Institute of Technology, based on National Patent No. 1782597, with the aim of efficiently conducting performance tests on screws. It can continuously perform tests from tightening to external force loading under computer control. It is capable of conducting extensive tests not only on plastic region fastening but also on general screw fastening and rivet fastening, making it widely useful for research, development, and quality control of screw and rivet fastening, as well as for surface treatments such as plating and the selection of lubricants. 【Features】 ○ National patent technology ○ Comprehensive functionality ○ Speeding up measurements For more details, please contact us or download the catalog.

• Testing Equipment and Devices

SDC Tanaka Co., Ltd. listens to our customers' concerns and is sincerely committed to resolving them, developing high-value-added products. Currently, we are developing a wide range of products, from water supply bolts to aircraft bolts. Moving forward, we will continue to pursue technology as a group dedicated to research and development of screws. 【Business Activities】 ○ Manufacturing and sales of various special screw parts, including SDC bolts ○ Import and sales of protective parts ○ Contract processing and equipment sales for plasma surface hardening treatment ○ Sales of SDC screw performance testing machines For more details, please contact us or download the catalog.

• Other machine elements

The "SDC Clean Bolt" is a hex bolt that is less prone to seizing during tightening due to the SDC plasma surface hardening treatment. It is ideal for use in environments such as food factories where anti-seizing measures like lubricants, plating, or coatings cannot be used. 【Recommended Uses】 ◎ In semiconductor manufacturing equipment and clean rooms that avoid impurities as much as possible ◎ In food and beverage industries ◎ In manufacturing equipment and piping for pharmaceuticals and cosmetics 【Features】 ◆ Prevents seizing without the use of lubricants or plating ◆ No outgassing occurs 【For more details, please download the catalog or feel free to contact us】

• Etching Equipment

SDC Insulation Bolt (SDC is a registered trademark of Tanaka Corporation) Perfect for insulated flange joints! Effective in preventing galvanic corrosion in dissimilar metal joints and stray currents along railway tracks! ■ Material SUS304, SUS316 ■ Shape Hexagonal bolt and nut ■ Features - Provides insulation effectiveness that withstands AC 2200V (guaranteed for 220V). - The bolt body is treated with a special lining, allowing for high-voltage insulation when combined with insulating washers. - Effectively prevents the major drawback of stainless steel bolts and nuts, which is seizure, through SDC color treatment (prevention of seizure and galling). - The bolt diameter is designed to smoothly fit into flange bolt holes in piping.

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In semiconductor manufacturing equipment and clean rooms, as well as in manufacturing equipment and piping related to food and beverages, pharmaceuticals, and cosmetics, it may not be possible to use lubricants or anti-seizing measures such as plating or coating on bolts and nuts due to a strong aversion to impurities. General stainless steel bolts and nuts pose a risk of outgassing, and while chemically polished ones are also used, they tend to easily seize during tightening. Therefore, our company has developed the "SDC Clean Bolt Series," which prevents seizing without the use of lubricants or plating by applying our proprietary technology, "SDC Plasma Surface Hardening Treatment," and also does not produce outgassing.

• Etching Equipment

Our company imports and stocks plastic protective parts for industrial equipment from BUNZL GROUP, the world's largest supplier of plastic products (including companies such as ALLIANCE in the U.S. and MOSS in the U.K.). We maintain a large and diverse inventory at our management building, enabling us to promptly deliver a variety of plastic products that meet various needs to our customers. The "SDC Protective Parts" excel in protecting, dust-proofing, and maintaining hygiene for items such as bolts and nuts. ● Standard products require no molds ● Wide variety of types ● Materials suited for specific applications 【Free Samples Available】 We offer free samples for preliminary dimension checks. Please try them on your actual products and feel confident in your purchase. For more details, please contact our sales representative. (Typically limited to one sample. For large items, please bear the shipping costs.)

• Other processing machines