The FIT-UP PRO Push-Button Carbon Steel Flange Line Up Pins are built for efficiency and longevity in flange alignment tasks. These innovative tools use a push-button release mechanism, allowing for rapid insertion and removal, which reduces setup time and increases productivity. Constructed from carbon steel with a black oxide coating, they resist corrosion and wear even in harsh environments. These pins accommodate flange holes ranging from 5/8 – 1.875″ / 16 – 47 mm, making them versatile for various flange types and sizes. The rugged ACME-thread design ensures reliable, long-term use, while the compact size allows for easy storage and transport. Supplied in pairs and blister-packaged for convenience, these pins are ideal for professional fabricators and welders who need dependable and quick alignment solutions. Whether on-site or in the workshop, these line up pins simplify the alignment process and reduce the risk of error during flange installations.
PUSH-BUTTON CARBON STEEL FLANGE LINE UP PINS


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Part No. | Old Sumner Part No. | Description | Flange Hole Diameter Range |
2121 | 781235 | Push-button carbon steel FLUP (pair) | 5/8 – 1.875″ / 16 – 47 mm |
Introducing the latest addition to our Flange Line Up Pins (FLUP) range, our new push-button carbon steel model. The new flange line up pin installs and removes quickly thanks to its convenient push-button operation. Rugged acme-thread and rust-resistant black oxide coated carbon steel means you can expect years of reliable use. This product comes in blister packaging.

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