Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.
1～15 item / All 18 items
Leave it to us for long screws (cut screws)!
□■Long Screws (Cut Length) Bolts Stock Range■□ 【Material】Iron (Raw, Chromate, Unichrome) S45C, Stainless Steel, Brass, Polycarbonate, Titanium, Lenny, etc... 【Size】M3 to M48 *Varies by material. 【Length】Up to 2,000mm *Varies by material. *Please also request other dimensions.
Products such as screws, nuts, and bolts processed with a trio coat. By coating the screw parts and seating surfaces, it ensures reliable anti-loosening and sealing effects!!
Trio Coat does not use any solvents in its materials, considering the environment. It is a reusable eco-coating due to its refillable nature! Trio Coat exhibits reliable anti-loosening and sealing effects by coating nylon resin, which excels in elasticity, functional strength, and chemical resistance, on the threaded parts and seating surfaces! As the name suggests, Trio Coat is an original product with three concepts: resistance to loosening, sealing, and environmental durability, making it a product with ambitious features! We can apply Trio Coat processing to your desired material. We will provide a quote based on the material, size, and shape, so please consult us first through the inquiry form.
High corrosion resistance and excellent high strength stainless steel material.
"Duplex stainless steel" is a type of stainless steel that consists of a microstructure made up of both austenite and ferrite by adding an appropriate amount of nickel (Ni) to high chromium (Cr), resulting in high strength and high corrosion resistance. It meets various needs, from fasteners to sheet metal and welding processing. 【Features】 ■ High strength ■ High corrosion resistance *For more details, please download the PDF or feel free to contact us.
Years of accumulated know-how, experience, and networks! Custom-made support tailored to your needs.
Our company specializes in custom-made screws and bolts. We collaborate with over 300 partner companies that possess technologies such as "cutting processing, header & trimmer processing, bending & pressing, rolling processing, drilling processing, and surface treatment." Drawing from our long-standing know-how and experience, we propose plans that meet our customers' expectations in terms of cost, delivery time, and quality. Please feel free to contact us with your requests. 【Strengths】 ■ Collaboration with over 300 partner factories ■ From meetings to delivery ■ Proposal for lot production for repeat items ■ Material sales ■ VA proposals 【New Business】 ■ Stainless Shell It features high durability, high corrosion resistance, and electrical insulation due to a resin film containing SUS316 flakes. It is mainly used in salt damage environments, such as cubicles, sluice gates, and bridges. ■ Alkaline Electrolyzed Water (OilWater) Alkaline electrolyzed water (Oilwater) is an industrial cutting fluid that does not require mineral oils or preservatives. By mixing in dedicated additives, it provides lubrication and cooling properties, achieving high cutting performance. *For more details, please refer to the PDF materials and feel free to contact us.
90% are custom-made products. We can accommodate small lots, select materials, reduce costs, and propose processing methods to increase strength! Samples available. Prototyping available.
**Features** - Hex bolts - Non-standard - Half-thread bolts These are hex half-thread bolts that are not part of any standard. In the past, it seems they purchased long standard items of L size and cut them down to make these. Without creating a mold, hex rivets are made and then cut to the specified length using a cam-type secondary processing machine. If the quantity increases, it would be more cost-effective to produce a mold, but for around 10,000 pieces, I believe that cutting is better in terms of delivery time and cost. If you are having trouble with half-thread bolts that are not part of any standard, please feel free to contact us. Sizes range from M6 to M12.
![[Technical Column] Do you know the difference between implant bolts and double-ended bolts?](https://image.mono.ipros.com/public/product/image/4b8/2001076428/IPROS88895185154833002507.png?w=280&h=280)
Actually different! I summarized the specific differences between "insert bolts" and "double-threaded bolts."
The embedded bolt and the double-ended bolt both lack heads and have threads cut on both ends, and they are sometimes thought to be the same product, but in fact, they are different items. Recently, I received a consultation stating, "There was a loosening in the double-ended bolt that is securing the machine." It seems that the person was not aware that the effective diameter of the threaded part on the embedded side of the embedded bolt is slightly thicker, which caused the loosening. If such an issue is discovered after mass production, it can lead to serious problems. To prevent this, let's recognize the differences between the "embedded bolt" and the "double-ended bolt." *For more details on the column, you can view it through the related link. Please feel free to contact us for more information.*
If you have any questions about screws and special parts, please feel free to contact us!
Since its establishment in 1938, our company has consistently been a manufacturer of special precision parts using plastic processing technology, delivering a wide range of products to the market. The products we have handled so far span various industries and sizes, including automotive (four-wheeled, two-wheeled, trucks), home appliances, construction, and mobile phones. Additionally, we design and manufacture the molds, tools, and ancillary equipment essential for product manufacturing in-house, enabling us to provide high-quality products to our customers at low costs. 【Product Categories】 ○ Automotive-related parts ○ Cam screws (washer-integrated screws) ○ Standard parts such as bolts For more details, please contact us or download our catalog.
Lightweight bolts made from aluminum, which has a specific gravity of one-third that of iron!
Aluminum bolts do not experience galvanic corrosion against aluminum, and since their specific gravity is 1/3 compared to steel, they are highly effective for weight reduction. The material specification is from the 7000 series, with a strength of 4T, and by applying anodizing treatment, high corrosion resistance and decorative qualities (various color variations) can be achieved. 【Features】 ■ No galvanic corrosion against aluminum ■ Significant weight reduction effect ■ High corrosion resistance and decorative qualities can be achieved through anodizing treatment *For more details, please refer to the catalog or feel free to contact us.
Bolts made of pure titanium and alloy titanium, specifically designed for lightweight construction.
This product uses pure titanium and alloy titanium to supply racing bolts and racing parts. It has high corrosion resistance and is lightweight. Please use it for fastening parts where weight reduction is required, such as racing components. 【Features】 ■Specialized for weight reduction ■High corrosion resistance *For more details, please refer to the catalog or feel free to contact us.
Suppress loosening due to thermal expansion differences and prevent galvanic corrosion! Weight reduction and color coding based on usage locations are also possible!
The "Robutite P type" is a tapping screw for resin. The screw thread is set at a 45° angle to prevent resin cracking, and multiple concave shapes are provided on the outer circumference of the screw thread to enhance the loosening function. Due to the special thread angle and shape, it can be applied not only to resin but also to steel plates. 【Features】 ■ Special thread angle and shape ■ Applicable to both resin and steel plates ■ Enhanced loosening function *For more details, please refer to the catalog or feel free to contact us.
Eco-friendly water-soluble type. Prevents loosening of all types of screws.
The "Pre-coated Type" adhesive screws and bolts are pre-coated with an environmentally friendly capsule-type adhesive from Loctite on the screw parts. The coating process in the production line is eliminated, significantly improving workability. Its effectiveness has been demonstrated across a wide range of fields, including the automotive and electrical equipment industries. Products using adhesives from other companies are also available. 【Features】 ○ Provides reliable anti-loosening and sealing effects ○ Also acts as a lubricant, achieving high axial force ○ Exhibits excellent chemical resistance and heat resistance ○ Prevents rust generation between dissimilar metals due to galvanic corrosion at screw joints For more details, please contact us or download the catalog.
Introduction to the strength classifications of steel and the types of steel (representative examples)!
In the process of electro-galvanizing, hydrogen is generated, which can infiltrate the interior of the bolts, creating voids and reducing their strength (hydrogen embrittlement). Therefore, for bolts with a strength of up to 10.9, it is acceptable to perform a baking treatment (heating the bolts to release hydrogen) after plating. However, for bolts with a strength of 12.9, hydrogen is less likely to escape, leading to hydrogen embrittlement, which poses a risk of the bolt head breaking off during tightening. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*
![[Special Process Product Example: 2] Proposal for Cost Reduction through Changes in Processing Steps](https://image.mono.ipros.com/public/product/image/967/2001136887/IPROS86932712020372586114.png?w=280&h=280)
[Case Study Available] We introduce a case where we implemented a reduction in processing time by changing from cutting process to stamping process for cost reduction!
◆Customer's Issue We received a consultation from a customer who is manufacturing hexagonal upset bolts, stating, "We are struggling with high costs." ◆Our Proposal We suggested using a forging process for the cutting operation before threading. ◆Effects After Improvement The successful reduction in processing time due to the change led to a decrease in costs. Our company primarily manufactures and sells custom screws and bolts, and we can also propose process changes based on the customer's challenges and requests. If you have any issues with the screws or bolts you are using, please feel free to consult us.
For requests regarding screws, retaining rings, springs, pins, and tools, please contact our company.
Suzuki Seiko Co., Ltd. leverages its many years of experience in the sale of industrial fasteners to provide products and services that earn the trust and satisfaction of our customers. We have a stock of various screws, bolts, retaining rings, and pins. Additionally, we accept orders starting from just one screw, so please feel free to contact us with your requests. 【Products Offered】 ■ Screws, Bolts, Nuts, Washers - Various types of small screws with cross holes - Various types of bolts, nuts, and washers ■ Tools - Tools for retaining rings, torque drivers, torque wrenches, and other tools ■ Machine Parts - FA and electrical materials - Bearing-related items *For more details, please download the PDF or contact us.
Non-loosening wave bolts. They deform the nut threads to increase resistance to slipping and prevent loosening!
The non-loosening wave screw bolt deforms the nut screw with its uneven surface, increasing resistance to slipping and preventing loosening. Additionally, the uneven surface has a spring effect that distributes the load across the entire nut screw, further preventing loosening. 【Features】 ◆ Non-loosening ◆ Load distribution due to the spring effect of the uneven surface ◆ Increased resistance to slipping to prevent loosening *For more details, please download the catalog or feel free to contact us.
