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  3. 塚由製作所
  4. New information! [Explanation materials available] Why is pinhole processing necessary? We provide a clear explanation of the features and benefits of pinhole processing.
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  • May 15, 2023
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May 15, 2023

New information! [Explanation materials available] Why is pinhole processing necessary? We provide a clear explanation of the features and benefits of pinhole processing.

塚由製作所 塚由製作所
Why do we process pin holes in hex bolts, U-bolts, rivets, etc.? A clear explanation of the features and benefits of pin hole processing! At Tsukayoshi Manufacturing, we respond to requests such as "I need to drill holes in the screw parts or rivets" and "I want to make the rivets stepped." For example, we can produce according to your desired dimensions, such as "I want a round rivet φ8×40 with a tip of φ6 and a length of 5" or "I want the tip to be centered to make riveting easier." Our company has a track record of delivering over 1,000 custom products across a wide range of industries, including construction, furniture, bicycles, agricultural machinery, and casters. If you think, "I wonder if this can be done..." please feel free to contact us. [Our Features] - We have a track record of delivering over 1,000 custom products across a wide range of industries, including construction, furniture, bicycles, agricultural machinery, and casters. - We can provide prototypes. - We can consult on small lot production, material selection, processing methods, etc. *For more details, please refer to the PDF materials or feel free to contact us.
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Why is pinhole processing necessary? We are offering explanatory materials!

Why do we perform pin hole processing on hex bolts, U bolts, rivets, and the like? A clear explanation of the features and benefits of pin hole processing!

At Tsuka Yuu Manufacturing, we respond to requests such as "need to drill holes in screw parts and rivets" and "want to make rivets with steps." For example, we can manufacture according to your desired dimensions, such as "I want a round rivet φ8×40 with a tip of φ6 and a length of 5" or "I want the tip to be centered to make riveting easier." Our company has a track record of delivering over 1,000 custom products across a wide range of industries, including construction, furniture, bicycles, agricultural machinery, and casters. If you think, "I wonder if this can be done..." please feel free to contact us. 【Our Features】 ■ Over 1,000 custom products delivered across a wide range of industries, including construction, furniture, bicycles, agricultural machinery, and casters ■ Prototypes available ■ Consultation on small lot production, material selection, processing methods, etc., is also possible *For more details, please refer to the PDF materials or feel free to contact us.

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Presenting the materials! Leave the pinhole processing to us!

For power, civil engineering, transportation equipment, construction-related applications, and more, we provide bolt retainers, anti-rotation devices, and fall prevention solutions! We also have a track record of producing over 1,000 types of custom products!

*Currently featured on Instagram* Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle construction-related and public facility screws, and we also accommodate custom manufacturing based on your requests. We have a maximum production capacity of 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and prioritize sales and proposals. We are posting information about each product on Instagram. Please check for the latest updates! **Main Production Items** - Machine parts - Construction-related screws - High-design switch knobs - Shafts - Hinges - Public facilities - Other special screw sales *For more details, please refer to the PDF document or feel free to contact us.*

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【Explanatory Material】Why is pinhole processing done?

【Explanatory Material】Why is pinhole processing done?

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Manufacturing and processing contract
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Please let us know your concerns regarding leaks. We may have some suggestions for you. Leak tests, leakage tests, leak inspections, leak detection, container integrity tests, packaging integrity tests...

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Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Aug 20, 2026

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Fukuda's Technology Column

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This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

Aug 20, 2026

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Hyper CLT flooring panel

CLT flooring boards that can also be used in material yards | Hyper CLT flooring boards

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In a civil engineering site material yard, not only is material storage conducted, but also the frequent movement of trucks and heavy machinery, unloading, and the movement of workers. On unpaved ground, mud and ruts can occur due to rain, which may reduce work efficiency. Hyper CLT mats are civil engineering CLT materials that utilize wood CLT. By laying them in material yards or storage areas, a work space that facilitates the movement of vehicles and heavy machinery can be established while protecting the ground. They can be laid only in necessary locations, and relocation or repurposing in accordance with construction progress is also possible. The 5×10 panel weighs approximately 230 kg, and the 5×20 panel weighs about 460 kg, making them lightweight and easy to install and remove even with small machinery. After use, they can also be utilized as temporary roads, access routes, or heavy machinery work yards. Additionally, they offer unique benefits of wood, such as glare reduction, noise suppression, and CO2 fixation. As a registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS "TH-250021-A," these wooden mats can also be used for environmental improvement in material yards and innovative public works.

Aug 20, 2026

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AAEON UP Series Board for Embedded Applications with Intel Core Processor (Series 3) [UP WCL]

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Features: ● Equipped with Intel Core Processor (Series 3) ● Onboard LPDDR5 memory: up to 24GB ● Onboard UFS storage: up to 256GB ● 2.5GbE (2.5 Gigabit Ethernet): 1 port ● HDMI 2.1 (TMDS): 1 port ● USB 3.2 Type-A: 3 ports ● 10-pin GPIO: 1 port ● Power input: 12V DC * This model does not include an operating system.

Aug 20, 2026

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AAEON UP Series AI Development Board with Intel Core Series 3【UP Nexus WCL】

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Features: ●CPU: Intel Core Processor (Series 3) ●Onboard Memory: Onboard LPDDR5 (up to 48GB) ●Onboard Storage: Onboard UFS (up to 256GB) ●LAN: 2.5GbE ×2 (Intel Ethernet Controller I226-IT) ●USB: USB 3.2 Type-A ×2, USB 3.2 Gen 2x2 Type-C ×1 ●GPIO: 40-pin GPIO ×1 ●Video Output: HDMI 2.1 (TMDS) ×2, DP 1.4a (via USB Type-C) ●Serial Port: RS-232/422/485 (10-pin header) ×2 ●Expansion Slots: M.2 2230 E-Key ×1, M.2 2280 M-Key ×1, M.2 2242 M-Key ×1 ●Security: TPM 2.0 ●Power Input: DC 12–24V input

Aug 20, 2026

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