Value Collection 3148TS Steel Thumb Screw 5/16-18 Oval Head

Product Description

The VALUE COLLECTION 3148TS is a steel thumb screw with an oval head and shoulder, designed for hand-tightened fastening applications where tools are not practical or permitted. Sized at 5/16-18 UNC threading and an overall length of 3 inches, this fastener features a zinc finish for basic corrosion resistance. The oval head measures 0.87 inches in diameter and 0.67 inches in height, providing a comfortable grip surface. The shoulder design helps control seating depth and alignment during assembly. Machinists, maintenance technicians, fabricators, and assembly line personnel commonly use this type of thumb screw in jigs, fixtures, enclosures, and equipment panels.

This thumb screw is suited for light-duty to medium-duty hand-fastening applications in industrial, commercial, and trade environments. The 5/16-18 UNC thread is one of the most common inch-series coarse thread sizes, making this fastener compatible with a wide range of tapped holes in steel, aluminum, and plastic assemblies. Typical use cases include access panels, equipment guards, tooling fixtures, and service covers where frequent removal and reinstallation is required without tools.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard tapped holes
• Oval head profile provides a comfortable grip surface for hand tightening
• Shoulder design aids in alignment and controls seating depth
• Zinc finish offers basic corrosion protection for indoor and light-duty service environments
• Steel construction provides reliable tensile strength for panel and fixture fastening
• 3-inch overall length suitable for moderate stack-up thicknesses

Compatibility

Designed as a standard inch-series thumb screw for use in any application with a 5/16-18 UNC tapped hole, including industrial fixtures, equipment enclosures, access panels, and fabricated assemblies.

Installation Notes

Installation is performed by hand threading into a pre-tapped or nut-fitted 5/16-18 UNC hole. Do not use a wrench or power tool on the oval head, as this can damage the head profile and deform the grip surface. Ensure mating threads are clean and free of debris before installation. Follow applicable equipment manufacturer guidelines for fastener seating requirements.