Insert Nut Product List and Ranking from 9 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

Insert Nut Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

  1. 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品　製造販売.　静岡県浜松市) Shizuoka//others
  2. 廣杉計器 Kanagawa//others
  3. 池田金属工業 Osaka//Building materials, supplies and fixtures manufacturers
  4. モリシタ Osaka//others
  5. アドバネクス Tokyo//others
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Insert Nut Product ranking

Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.

  1. [Technical Information] Basic Knowledge of Screws: "Textbook on Screws Learning from the Basics" 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品　製造販売.　静岡県浜松市)
  2. Brass UltraSart IV (Flanged Type) 'HFU' 廣杉計器
  3. I will teach you the basics of fastening screws for resin. <Technical materials provided> 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品　製造販売.　静岡県浜松市)
  4. Insert nut "Ensat" 池田金属工業
  5. 4 [Technical Data] High Torque Compatible Insert Nut "SSOI Nut" 第一工業 鋲螺事業部(ネジ・ボルト・ナット等締結部品　製造販売.　静岡県浜松市)

Insert Nut Product List

16～30 item / All 39 items

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[Technical Data Free Offer] You can understand the basics of "Screw Performance Evaluation."

[Technical Data Free Offer] You can understand the basics of "Screw Performance Evaluation."

We are engaged in product development and performance evaluation to shape our customers' requests. We provide testing evaluation equipment and examples of evaluations. We will teach you the basics of performance evaluation.

Screws are small components, but they play a significant role as functional parts in "fastening." Performance evaluation is essential to shape our customers' requests. For example, we have a series of screws designed for special octagonal shapes in resin. The starting point was a customer's request for a nut that wouldn't rotate when embedded in resin. Using FEM analysis, we selected the optimal shape from 40 different designs. Collaborating with the production technology and manufacturing departments, we developed an insert nut that can withstand high torque fastening. To turn requests into reality, it is necessary to have evaluation capabilities to ensure proposed performance. During the development stage, we need to consider performance requirements and mass production feasibility, and after development, we must confirm the design performance and mass production quality, among various evaluations. Our company is equipped with various testing and evaluation facilities, including those developed in collaboration with academia. You can understand the basics of screw performance evaluation, including what kind of equipment is used and what evaluations are conducted. We also provide actual evaluation examples. Please take a look at our development and evaluation tests to shape our customers' requests. More details can be downloaded, and feel free to contact us with any inquiries.

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I will teach you the basics of fastening screws for resin. <Technical materials provided>

I will teach you the basics of fastening screws for resin. <Technical materials provided>

Are you having trouble with "fastening resin"? You can fasten resin with "bolts + nuts." You will gain basic knowledge about screws specifically for resin.

Are you struggling with "fastening of resin"? With resin, you can achieve fastening using "bolts + nuts" by utilizing dedicated screws. Dedicated screws include insert nuts and insert bolts that are embedded in the resin. In softer resins compared to iron, embedded bolts or nuts can rotate together, leading to deformation or breakage of the resin. Have you ever experienced deformation of resin products due to "nut rotation"? Our original development of dedicated screws for resin (Octa Lobular(R) series) features a special octagonal head shape that ensures high torque resistance and high pull-out strength. Even when tightened with high torque, it prevents "rotation" and "pull-out," protecting resin products. You can choose from various types of insert nuts (simultaneous molding type, press-fit type, and both with caps) and insert bolts (both simultaneous molding and post-embedding options) according to your specifications. If you're wondering, "What is an insert nut?" please refer to our technical document "Basic Knowledge of Insert Nuts." It clearly explains the usage of insert nuts and compatible resins, covering the "basics of insert nuts." You can view it via PDF download.

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[Technical Information] Basic Knowledge of Screws: "Textbook on Screws Learning from the Basics"

[Technical Information] Basic Knowledge of Screws: "Textbook on Screws Learning from the Basics"

The textbook on screws created by a group of screw specialists, 'Learning About Screws from the Basics.' You can understand fundamental knowledge from types of screws to fastening design. Available for free!

Daiichi Kogyo is a specialized group that develops and manufactures both bolts and nuts. Although they are both "fasteners," bolts and nuts differ in materials, processing methods, manufacturing equipment, and required performance. 【What a specialized group can do】 ● Consideration of optimal materials and shapes: The "development/design capability" of a specialized group 　→ Utilization of FEM analysis and knowledge of materials ● Evaluation and analysis of fasteners with data backup: The "evaluation capability" of a specialized group 　→ Performance evaluation from individual parts to actual machines ● Reduction of prototype lead time and mass production: The "production technology/manufacturing technology capability" of a specialized group 　→ In-house mold production and utilization of FEM analysis For more details, please visit the 【Daiichi Kogyo Co., Ltd. Fastener Division Fastening Parts Site】 below. "Useful information about fasteners" is also available. Please take a look. There is a "Textbook on Fasteners: Learning from the Basics" created by a specialized group in fasteners. - What are fasteners - The mechanism of how fasteners tighten - Fastener loosening - Fastener design You can understand the basic knowledge of fasteners. It is available for free. Please download and take a look.

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[Case Study] You can understand the reasons for adopting high-torque insert nuts.

[Case Study] You can understand the reasons for adopting high-torque insert nuts.

You can see the benefits of using the "SSOO Nut," an insert nut that is strong against pull-out and supports high torque. Examples of parts and molding methods are currently being published.

The SSOO nut is a "heat press-in type insert nut (outsert nut)" that achieves high "torque resistance performance" and "pull-out strength." It prevents the nut from rotating (spinning) or pulling out during high torque tightening, ensuring safe fastening of resin products. The SSOO nut has solved various problems for our customers. 【Case 1】 - High tightening torque is required, but the insert nut spins. → It meets tightening requirements with high torque resistance performance, fastening resin components without spinning. 【Case 2】 - To reduce weight, we want to decrease the number of screws used. → It achieves a reduction in the number of screws used with high pull-out strength while ensuring fastening strength. Additionally, it has realized many benefits such as reducing environmental impact and responding to strong vibrations. For more details, please refer to the "SSOO Nut Adoption Case Collection." If you are struggling with fastening resin at high torque, please take a look at the materials. You will understand why we were able to develop the original SSOO nut that can handle high torque tightening. Please check it out from the link.

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Insert nuts: low cost and easy to handle!

Insert nuts: low cost and easy to handle!

All produced in Japan! We offer a lineup of bit inserts and heat-pressed inserts after molding, enhancing the bonding of synthetic resins!

We handle various types of "insert nuts" from Tokai Metal Industry. Our lineup includes the "Bit Insert SB," which is easy to use and excels in balance in terms of holding power and cost, the flanged "Bit Insert FB," and the "Ultra Insert UD II," which specializes in holding power. Additionally, we can manufacture nuts for various applications. Please feel free to contact us. 【Partial Lineup】 ■ Bit Insert SB ■ Bit Insert FB ■ Ultra Insert UD II ■ Ultra Insert UD IV ■ Dodge Insert SD ■ Dodge Insert FD *For more details, please refer to the PDF materials or feel free to contact us.

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UltraSart UDIV

UltraSart UDIV

The method of use is hot press fitting! Introducing the world standard insert with high retention strength and high durability!

"UltraSert UDIV" is a standard insert nut with excellent holding power. The material is brass (iron, stainless steel, aluminum), and the screw management standard is JIS Grade 2. If you encounter issues with the surface of molded products shrinking in tapered holes when designed with "UltraSert II," please consider this option. 【Features】 ■ Usage method: Heat press fitting ■ Compatible resin: Thermoplastic ■ Material: Brass (iron, stainless steel, aluminum) ■ Screw management standard: JIS Grade 2 *For more details, please refer to the PDF document or feel free to contact us.

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Selection Guide Presentation: Insert Nut

Selection Guide Presentation: Insert Nut

Improving the strength of the part where the screw is tightened! There are various benefits!

An "insert nut" is a fitting used to attach screws to resin materials such as plastic. By using an insert nut, the strength of the screw hole is improved, preventing cracks in the resin and enabling a high degree of design flexibility. Tokai Metal Industry Co., Ltd. provides high-quality insert nuts through a thorough quality control system and has received high praise from industries that require high reliability, such as the automotive industry. In addition to a variety of standard shapes, we can also create custom products tailored to customer requests. We can conduct strength tests regarding compatibility with resin materials as well. We are also available to assist with any other concerns or inquiries. For more details, please refer to the PDF materials or feel free to contact us.

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Insert nut

Insert nut

Insert nut

Insert nuts are pressed and inserted into the insertion holes formed during molding using pressure and heat insertion methods to create threads. 【Product List】 ○ Dodge Insert: HSD/HFD - Cross-slit shape - Usable for thin-walled counterpart materials ○ Bit Insert: HSB/HSB-Z/HFB - General-purpose type - Cost-effective and well-balanced ○ Ultra-Sert: HUDII - Tapered shape - Easy to set and has good thermal conductivity ○ Ultra-Sert: HUDIV - Asymmetrical knurled shape - Excellent tensile and torque strength ○ Mini Bit Insert: HMIB-Z - Mini size - Suitable for miniaturization of counterpart materials ● For other functions and details, please contact us.

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Insert nut "IRB"

Insert nut "IRB"

A comprehensive manufacturer of spacers that handles round pins, square pins, pin sockets, and more for pin headers.

The "IRB" is an insert nut compliant with RoHS. 【Specifications】 ■Material: Brass (C3604BD) with cadmium content of less than 75ppm ■Finish: Nickel plating (Ni) ■RoHS compliant product ■Order quantity: 50 pieces or more *For more details, please refer to the PDF document or feel free to contact us.

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Brass insert color (for simultaneous molding) 'ICM'

Brass insert color (for simultaneous molding) 'ICM'

Introducing insert nuts for simultaneous molding! We accept orders starting from 50 pieces.

We would like to introduce our brass insert color "ICM." The material is brass (C3604BD) with a cadmium content of less than 75ppm. It is a RoHS2 compliant product without plating. We offer products that accommodate various sizes. Please feel free to contact us when you need assistance. 【Specifications】 ■ Material: Brass (C3604BD) with cadmium content of less than 75ppm ■ Treatment: Without plating *For more details, please refer to the PDF document or feel free to contact us.

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Insert nut "Ensat"

Insert nut "Ensat"

Recommended for soft materials! An insert with a self-tapping feature that offers good workability.

"Ensat" is an insert nut with a self-tapping feature. It eliminates the need for the tapping process required before inserting the wire insert. Additionally, compared to press-fit types, the external threaded part grips the base material tightly without gaps, making it less likely to come loose. 【Features】 ■ Eliminates the need for the pre-tapping process ■ Provides pull-out strength due to its one-piece molding ■ Reduces distortion of the base material caused by insert insertion *For more details, please refer to the related links or feel free to contact us.

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Damage and loosening prevention for aluminum and non-ferrous materials, thread reinforcement (insert nut).

Damage and loosening prevention for aluminum and non-ferrous materials, thread reinforcement (insert nut).

<Compatible with M3 to M120> Demonstrates high airtightness and corrosion resistance for metal materials with low shear strength, such as aluminum die-cast and magnesium parts!

We would like to introduce the thread reinforcement (insert nuts) for non-ferrous materials, including aluminum die casting, handled by our company, Berhof. 【Product Details】 ◎ Helicoil: For aluminum extrusions Using bolts on a base material with low shear strength poses a risk of thread damage. However, by using this product, the risk of having to completely replace the product during thread repair is prevented. Additionally, the risk of damaging the threads when fastening with iron bolts is reduced, contributing to a lower defect rate. An approximate 40% increase in pull-out load is expected compared to unreinforced threads. ⇒ It is possible to keep costs to a minimum. ◎ Kobsert: For aluminum and magnesium die casting - Used for thread reinforcement and repair of damaged threads - Mechanically secured without the need for additional fixing pins, washers, or chemical adhesives - Easy to install for anyone - Available with a seal ring for even higher airtightness An approximate 40% increase in pull-out load is expected compared to unreinforced threads. ⇒ It is possible to extend product life and achieve high cost-effectiveness. *For more details, please refer to the PDF document or feel free to contact us.

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"SSOO Nut" that reduces the cost of bolts and nuts to 2/3 *Case study materials*

"SSOO Nut" that reduces the cost of bolts and nuts to 2/3 *Case study materials*

By using SSOO nuts, the cost of bolts and nuts is reduced to 2/3! We are offering a free case study that demonstrates achieving a 2/3 cost reduction and a 17% decrease in threaded parts!

This is an introduction to a case where the automotive parts that typically used six insert nuts were replaced with the "high-strength" SSOO nuts from Daiichi Kogyo (high torque compatible insert nuts), resulting in a reduction of the number of components to four. By reducing the number of insert nuts by "two," the number of bolts was also decreased, leading to a cost reduction of about two-thirds and a weight reduction of 17% for the threaded components. ■ We are currently offering free case study materials that demonstrate the effects of cost reduction and weight reduction! ■ *For more details, please view the PDF available for download.

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[Technical Data] High Torque Compatible Insert Nut "SSOI Nut"

[Technical Data] High Torque Compatible Insert Nut "SSOI Nut"

We are offering free technical materials that demonstrate the strength of SSOI nuts! The materials include a wealth of test data such as tensile tests, torque strength tests, and tightening tests.

The SSOI nut improves torque resistance performance by being molded into a special octagonal shape. It is an insert nut that achieves "difficulty in rotation" and "difficulty in removal," molded simultaneously during resin molding. This technical report presents abundant test data, including tensile tests and torque strength tests, as well as adoption results, explaining the excellent performance of the SSOI nut. ● "Difficulty in rotation" By molding into a special octagonal shape, the torque resistance performance has been significantly improved compared to conventional insert nuts. It prevents the nut from spinning freely (back spinning) during high-torque tightening. 【Verification Test Results】 Torque strength test results (Material: MC Nylon): 25N·m or more ● "Difficulty in removal" Designed for simultaneous use with resin molding, it has excellent tensile (pull-out) strength. It features high vibration resistance and high rotational torque, making it difficult to loosen. 【Verification Test Results】 Pull-out load test results (Material: MC Nylon): 8250N ● Shape As a non-through type, there is no need to worry about resin flowing into the screw hole. 【Adoption Examples】 Resin parts such as air cleaners and intake manifolds. *For detailed technical information, please refer to the download.

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[SSOO Nut Adoption Case] Hydrogen Emission Parts and Filter Parts

[SSOO Nut Adoption Case] Hydrogen Emission Parts and Filter Parts

By reducing the number of screw components, we have achieved a weight reduction of approximately 17%! Here are examples of the adoption of SSOO nuts. *SSOO nut technical report available.

Here are some examples of adoption that contributed to weight reduction with the high pull-out strength of SSOO nuts. <Adoption Example 1> Adoption Location: Hydrogen discharge parts used in hydrogen fuel cell vehicles (4 SSOO nuts, M6 size, used per unit) Target Resin: PP-TD30 (Polypropylene Talc 30%) [Challenge] ■ To reduce the number of screw components for weight reduction (previously 6 per unit) [Solution] ■ High pull-out strength enabled the reduction of the number of components used [Effect] ■ Reduced the number of screw components to 4 per unit ■ Achieved a weight reduction of 8g (approximately 17%) for screws <Adoption Example 2> Adoption Location: Automotive filter components (2 SSOO nuts, M6 size, used) Target Resin: New material resin using plant-derived fibers (PP) [Challenge] ■ To reduce the number of screw components for weight reduction (previously 3) ■ Insufficient strength of the new material resin causes it to spin under the specified torque with conventional products [Solution] ■ High pull-out strength enabled the reduction of the number of components used ■ High torque resistance performance meets the specified torque requirements [Effect] ■ Reduced the number of screw components to 2 ■ Achieved a weight reduction of 4g (approximately 17%) for screws

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