Value Collection R40694142 1/4-28 Socket Cap Screw

Product Description

The VALUE COLLECTION R40694142 is a hex socket cap screw designed for precision fastening in mechanical, structural, and industrial assemblies. Threaded 1/4-28 UNF with a 1 inch length under head and a 3/16 inch internal hex drive, this fastener is machined from 18-8 stainless steel for corrosion resistance in demanding service environments. The fine thread pitch of 28 TPI provides strong clamping force and resistance to vibration loosening. Weighing approximately 0.018 pounds per unit, it is well suited for applications where both strength and material compatibility are critical. Installation requires a standard 3/16 inch hex key or Allen driver.

This cap screw is used in light-duty to medium-duty mechanical assemblies where a flush, recessed drive head is preferred over external hex or slotted fasteners. Typical applications include machine component mounting, bracket attachment, equipment enclosures, and maintenance work on HVAC, plumbing, and electrical equipment frames. The 1/4-28 UNF fine thread is commonly specified in precision assemblies and in situations requiring controlled torque with minimal thread strip risk. Available in a minimum order quantity of 100 pieces, making it appropriate for service stock or production use.

Key Features

• 1/4-28 UNF fine thread for strong clamping and vibration resistance
• 1 inch length under head for consistent fastener depth control
• 3/16 inch hex socket drive accepts standard Allen keys and hex bits
• 18-8 stainless steel construction provides corrosion resistance in wet or humid environments
• Low-profile socket cap head allows installation in recessed or space-limited locations

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw suitable for use in any assembly specifying this thread size, drive type, and material grade.

Installation Notes

Installation is performed with a 3/16 inch hex key or Allen driver; use of a calibrated torque wrench is recommended where specified torque values are defined by the equipment manufacturer. Ensure mating threads are clean and free of debris before installation. Do not overtighten stainless steel fasteners, as 18-8 alloy is susceptible to galling under excessive torque; use of an appropriate anti-seize compound on the threads is a common field practice to prevent thread seizure.