L H Dottie Co T141OR One Way Round Head Screw

Product Description

The L H DOTTIE CO T141OR is a one-way round head screw with a 1/4-20 thread size and 1-inch length. One-way fasteners are designed to be installed but not removed with standard tools, making them a common choice for tamper-resistant applications in electrical panels, access covers, enclosures, and similar installations. The 1/4-20 thread designation indicates a 1/4-inch nominal diameter with 20 threads per inch, a coarse-thread standard widely compatible with standard hardware and tapped fixtures. This fastener is sold individually and suited for use by electricians, contractors, and maintenance technicians working on secure or restricted-access assemblies.

One-way screws are used where permanent or semi-permanent fastening is required and unauthorized removal must be deterred. Common applications include electrical enclosures, panel covers, junction boxes, and access doors in both commercial and residential settings. The round head profile provides a low-profile bearing surface suitable for surface-mounted installations where head clearance is a factor. This screw fits standard 1/4-20 tapped holes and is compatible with common installation tooling such as a slotted or custom one-way driver bit.

Key Features

• One-way drive design prevents removal with standard tools for tamper-resistant installations
• 1/4-20 coarse thread for compatibility with standard tapped hardware and fixtures
• 1-inch length suitable for light to medium fastening depth
• Round head profile provides a broad bearing surface for surface-mounted applications
• Sold individually for single-unit replacement or low-quantity use

Compatibility

Designed as an OEM-style replacement or direct-install fastener for applications requiring 1/4-20 threaded hardware in tamper-resistant configurations.

Installation Notes

Installation requires a one-way driver bit matched to the fastener head profile. Standard Phillips, slotted, or hex drivers will not remove this fastener once set. Ensure the mating tapped hole or nut is properly aligned before driving to full seating. Follow applicable NEC or local electrical code requirements when securing enclosure covers or panel hardware.