Wiha 70168 T40 Tamperproof Torx Bit 1/4 Inch Drive 10-pack

Product Description

The WIHA 70168 is a T40 tamperproof Torx screwdriver bit designed for 1/4 inch hex drive tools. Built from steel, this security bit features the center-pin bore required to engage tamper-resistant T40 fasteners found in HVAC equipment, electrical enclosures, and commercial fixtures. The bit measures 25 millimeters (approximately 1 inch) in overall length, fitting standard 1/4 inch hex quick-change drivers, bit holders, and power tool adapters. Sold in a pack of 10, it is well suited for technicians who cycle through bits frequently on job sites or keep spares in service kits.

This bit is used wherever tamper-resistant Torx fasteners are specified, including residential and commercial HVAC unit panels, electrical panel covers, pool equipment housings, and appliance assemblies. The T40 size is common on larger fasteners in light commercial and residential equipment. Trade professionals including HVAC technicians, electricians, and pool service technicians regularly carry this size for field service and preventive maintenance calls where OEM-installed security fasteners must be removed and reinstalled.

Key Features

• T40 tamperproof Torx profile with center-pin bore for security fastener engagement
• 1/4 inch hex shank fits standard quick-change bit holders and power tool adapters
• Steel construction for durability under torque load
• 25 millimeter overall length suits most standard bit holders
• Pack of 10 supports stocking service kits and reducing job-site downtime

Compatibility

Designed for use with any 1/4 inch hex drive bit holder, manual screwdriver handle, or power tool accepting standard 1/4 inch hex shank insert bits.

Installation Notes

Installation and removal of tamper-resistant fasteners should be performed by a qualified technician familiar with the equipment being serviced. Always de-energize electrical equipment and follow applicable lockout/tagout procedures before removing any panel or enclosure fasteners. Ensure the bit is fully seated in the driver before applying torque to avoid cam-out or fastener damage. Inspect bits regularly and replace any showing wear or deformation.