. has manufactured and distributed hydraulic flanges to SAE J518, ISO 6162, ISO 6164, JIS, and other flange standards for over 50 years. MAIN also manufactures and/or sells flange adapters, SAE split flanges, manifolds, subplates, special hydraulic connectors and other components. A twenty-first century manufacturing facility, located in Grand Blanc, Michigan, allows MAIN to control quality and helps assure On-Time Delivery of both standard and special parts.* A short movie about us can be viewed by clicking here.

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Thank you for 50+ years

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WE ARE HERE TO HELP. Orders and inquiries are reviewed by engineers. Each week MAIN's order review system discovers many customer typos, mismatched descriptions, mismatched parts, and other problems. This saves time, money, and embarrassment. MAIN's engineers sit on several SAE and NFPA committees, have been US experts to ISO committees, and are involved in writing the standards. These same people are available to help customers with a difficult connection or piping situation.

*Note: Split Flanges, cap screws, lock washers, O-rings and some other accessory items are not made by MAIN Manufacturing. These items may or may not be imported.


Click below for MAIN's home page.
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3181 Tri-Park Drive
Grand Blanc, Michigan 48439
Fax: 810-953-1385
Michigan Phone: 810-953-1380
Toll Free Phone: 1-800-521-7918

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