We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Insulation bolt.
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Insulation bolt Product List and Ranking from 6 Manufacturers, Suppliers and Companies

Last Updated: Aggregation Period:Sep 24, 2025~Oct 21, 2025
This ranking is based on the number of page views on our site.

Insulation bolt Manufacturer, Suppliers and Company Rankings

Last Updated: Aggregation Period:Sep 24, 2025~Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. ダイコー 本社 Osaka//Building materials, supplies and fixtures
  2. SDC田中 Osaka//Aviation & Aerospace
  3. バルカーテクノ Tokyo//Trading company/Wholesale
  4. 4 巴製作所 本社・尼崎工場 Hyogo//Manufacturing and processing contract
  5. 5 明星電気 本社(世田谷区用賀)、東北営業所(郡山市)、中部営業所(春日井市)、白河工場(西白河郡泉崎村) Tokyo//Manufacturing and processing contract

Insulation bolt Product ranking

Last Updated: Aggregation Period:Sep 24, 2025~Oct 21, 2025
This ranking is based on the number of page views on our site.

  1. Mechanical equipment maintenance: Insulation bolts (sleeve + washer type) to prevent electrolysis. ダイコー 本社
  2. Electrical corrosion prevention insulating bolt ダイコー 本社
  3. Insulated washer included, electrical insulation bolt set "SDC Current Insulation Bolt" SDC田中
  4. 4 Insulating bolt バルカーテクノ
  5. 5 Insulated Bolt "SDC Current Insulated Bolt" SDC田中

Insulation bolt Product List

1~9 item / All 9 items

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Insulation Bolt Type VS II

Simple-shaped insulating bolts and nuts for preventing electrolysis! Coated with TOM coating, achieving excellent workability and high durability.

The "Insulation Bolt Type VS II" is a simple type of insulation bolt and nut made from stainless steel, which has excellent corrosion resistance and is designed to prevent electrolysis. Since the sleeve and the outer diameter of the screw are almost the same, there is no need for enlarging the bolt holes in the flange. Because a resin sleeve is used as the insulating material, unlike painting, there is no risk of insulation failure due to peeling or pinholes. Some sizes are kept in stock for immediate delivery. It can be used in general piping, avoiding direct sunlight. 【Features】 - Shuts out corrosion currents caused by fastening bolts between flanges, preventing electrolysis. - Comes with two insulating washers, so the installation direction of the bolt does not matter. - The insulating sleeve and the outer diameter of the screw are almost the same, eliminating the need for enlarging the bolt holes in the flange. - Uses PVC (polyvinyl chloride) for the insulating sleeve, achieving low cost. - The nut (made of stainless steel) is coated with TOM coating, balancing good workability and high durability. *For more details, please refer to the PDF document or feel free to contact us.

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Insulated Bolt "SDC Current Insulated Bolt"

Insulation for high voltage (guaranteed 220V), suitable for machinery and piping flanges for various plants!

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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Insulating bolt

This is an insulated bolt designed to prevent galvanic corrosion caused by potential differences between dissimilar metals.

The bolts are lined with a strong resin that provides high strength and insulation, making them not only excellent in insulation but also highly resistant to corrosion and weathering. Additionally, this lining is finished to the same diameter as the screw, allowing for easy installation.

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Glass epoxy (Galaepo) laminated molding insulation bolt

Insulated bolt made by laminated molding of a core bolt with glass epoxy.

In this processing example, to provide insulation to the bolts, we are layering prepreg, which is a substrate made by impregnating glass fiber with epoxy resin and partially curing it, onto iron core bolts and performing pressure heat molding. After molding, we use a lathe to cut and shape the outer profile. In addition to glass epoxy (Galaepo), we can also create insulated bolts using cloth bake. Myojo Electric provides one-stop solutions from material selection and procurement of thermosetting resins, including glass epoxy, and engineering plastics, to various processing such as cutting, molding, polishing, bending, and bonding. If you have any questions or inquiries, please feel free to contact us.

  • Processing Contract

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Electrical insulation bolt

Custom-made insulating bolts and nuts.

The bolts and nuts are manufactured and sold not only based on the distinction between iron and stainless steel but also according to specifications regarding material, strength, and plating. Since they are made to order, there is flexibility in the shape of the bolt body and insulation parts. The bolts and nuts can comply with not only JIS standards but also ASTM and ANSI/ASME, and various test certificates can be issued.

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Mechanical equipment maintenance: Insulation bolts (sleeve + washer type) to prevent electrolysis.

Using insulating bolts allows for electrical insulation between the flanges and between the flange and port nut, thereby preventing galvanic corrosion.

Daiko's "Insulated Bolt (Sleeve + Washer Type)" The "Insulated Bolt (Sleeve + Washer Type)" is a product that prevents electrical corrosion by electrically insulating the space between flanges and between flanges and bolts/nuts. Using glass-filled epoxy resin board and high-temperature mica laminated board as washers, and employing a PTFE sleeve for bolt protection, it offers high insulation resistance and excellent mechanical strength. Additionally, we also offer the integrated "T9019-Z," which combines an insulating sleeve and insulating washer that can be set on commercially available bolts. 【Features】 <Insulated Bolt (Sleeve + Washer Type)> ■ Excellent electrical resistance and tightening strength ■ Smooth delivery response even for specifications other than standard products ■ Two types of washer materials can be selected based on the usage temperature ■ Excellent light resistance and weather resistance, with very little aging change *For more details, please refer to the PDF document or feel free to contact us.

  • 絶縁ガスケット.png
  • 絶縁ボルト.png
  • Piping Materials
  • Other machine elements
  • bolt

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Electrical corrosion prevention insulating bolt

Achieve electrical insulation between flanges and insulation between flanges and bolts/nuts to prevent galvanic corrosion!

We would like to introduce our "Electrolytic Corrosion Prevention Insulation Bolt." Our lineup includes a sleeve + washer type insulation bolt that excels in electrical resistance and tightening strength, as well as the ETFE integrated electrical insulation sleeve "T9019-Z" and the "Insulation Bolt Lining" designed to prevent electrolytic corrosion caused by contact between dissimilar metals. Please feel free to contact us when you need assistance. 【Sleeve + Washer Type Features】 ■ Excellent electrical resistance and tightening strength ■ Length of the sleeve can be specified ■ Two types of washer materials can be selected based on the usage temperature ■ Excellent light resistance and weather resistance, with very little aging change *For more details, please download the PDF or feel free to contact us.

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SDC current insulation bolt

SDC current insulation bolt

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.

  • nut

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Insulated washer included, electrical insulation bolt set "SDC Current Insulation Bolt"

Ideal for high voltage insulation! Set of insulated bolts, nuts, washers, etc.

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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