SAIDA Manufacturing Co. Ltd.
Fasteners
Introduction to SAIDA Manufacturing Co. Ltd.
SAIDA Manufacturing Co. Ltd. specializes in the production of small set screws, operating under its proprietary brand, DELscrew. The company offers a range of standard and custom-engineered set screws, catering to diverse industrial requirements. With over 50 years' of experience, SAIDA Manufacturing has developed a reputation for precision and quality in this niche market.
DELscrew Slotted Set Screws
The core offering includes DELscrew Slotted Set Screws, available in Flat Point, Cone Point, and Oval Point tip shapes. These are manufactured from steel (leaded, equivalent to JIS SUM24L) or stainless steel (leaded, equivalent to JIS SUS303). Nominal diameters for steel range from M1 to M2.5, including M1.7 and M2.3, which are older JIS standards still in market use. Stainless steel versions are available from M1 to M3. A key differentiator is the availability of shorter overall lengths, from 1mm to 1.8mm, which fall outside standard JIS specifications, addressing a specific market demand. Build-to-order options allow for lengths under 1mm and non-standard intermediate lengths. Steel set screws are typically galvanized (trivalent chromium zinc plated, RoHS compliant) with black or white silver finishes, while other platings and surface hardening are available upon request.
Hexagon Socket Set Screws
SAIDA Manufacturing also provides Hexagon Socket Set Screws in various tip shapes, including Cup Point, Flat Point, Cone Point, and unique industry-devised designs like Cup & Cone Point (CC Point) and Knurled Cup Point. These screws are crafted from high-strength Ni-Cr-Mo Steel (JIS SNCM240) and undergo heat treatment to achieve a hardness of HRC50-53, ensuring high durability and resistance to hexagonal hole deformation. Surface treatment includes a black oxide film, which eliminates the need for oiling, making them suitable for automated assembly processes.
Manufacturing Expertise and Quality Assurance
The company's manufacturing process leverages microcomputer-controlled cam-type automatic lathes. This specialized machinery, though less common today, enables high precision in squareness and coaxiality between the screw tip and threaded part, surpassing the accuracy of traditional press work or die cutting methods. SAIDA Manufacturing has also developed proprietary solutions to address common issues such as burrs and slot eccentricity. This includes a unique 'holding device' for precise slot depth control and a V-groove technique to minimize burr formation. The company emphasizes consistent quality through meticulous process control and continuous research into ideal set screw designs.
Custom and Special Screw Offerings
Beyond its standard DELscrew range, SAIDA Manufacturing accepts orders for custom-designed set screws and special parts. This includes screws based on user-specific drawings, older JIS standards, or non-DEL standard tip shapes like Dog Point or Cup Point. Examples of custom work include slotted set screws with pins, various cylinder head screws, and lead screws. The company offers free samples of its standard set screws (excluding hexagon socket types) to allow customers to assess product quality firsthand.
