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The CRESCENT CIMSA1N is a male impact socket adapter designed to convert a 3/4 inch square male drive to a 1/2 inch square female drive. Built from steel and rated to ASME B107.33M standards, this adapter allows technicians to use 1/2 inch drive sockets with a 3/4 inch drive impact tool. It is compact at 1.8 inches in length and 1.1 inches in width, making it practical in tight spaces. HVAC technicians, plumbers, electricians, and general mechanical tradespeople use adapters like this when a drive size mismatch occurs between impact wrenches and available socket sets.
This adapter suits residential and commercial service applications where a technician needs to step down from a 3/4 inch impact drive to a 1/2 inch socket. Typical scenarios include equipment installation, fastener removal during compressor replacement, pump work, panel installation, or any mechanical service task requiring impact-rated drive conversion. The steel construction handles the torque demands of pneumatic and cordless impact tools without deforming under load.
Designed for use with 3/4 inch square drive impact wrenches and 1/2 inch square drive sockets. Compatible with standard impact-rated socket sets meeting ASME B107.33M drive interface specifications.
Install and remove this adapter by hand before applying impact tool power. Inspect the adapter for cracks or wear before each use, and replace immediately if deformation is detected. Ensure both the drive tool and socket are also impact-rated before use, as non-impact sockets can fracture under impact tool torque. No special tools or codes are required for installation of drive adapters.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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