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The PROTO J5240A is a slotted screwdriver socket designed for use with 3/8 inch drive ratchets and extensions. The blade measures 5/16 inches wide by 3/64 inches thick, making it well suited for driving standard slotted fasteners in confined spaces where a standard screwdriver cannot reach. Overall length is 3 inches. The socket construction delivers the torque transfer of a drive tool with the tip profile of a flathead screwdriver bit, a combination that proves useful to HVAC technicians, plumbers, and electricians working inside equipment panels, junction boxes, and valve assemblies.
This socket fits into standard 3/8 inch drive tool setups and is used wherever slotted fasteners need to be driven or removed with controlled torque. Typical applications include panel cover screws, terminal block fasteners, and equipment access hardware in residential and light commercial mechanical systems. Its compact 0.6 inch by 0.6 inch body profile allows use in tighter clearances compared to bulkier bit-driver adapters.
Designed as a standard 3/8 inch drive screwdriver socket for use with any 3/8 inch drive ratchet, extension, or torque wrench accepting square-drive accessories.
Licensed electricians, HVAC technicians, and plumbers typically use this socket when service procedures require controlled torque on slotted fasteners. Ensure equipment is de-energized and isolated before removing or installing any panel hardware. Use a calibrated torque wrench when fastener torque specifications are called out in equipment service documentation. Inspect the blade tip for wear before use to avoid fastener head damage.
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