Value Collection 643518PS Hex Head Cap Screw M3x0.5x8mm

Product Description

The VALUE COLLECTION 643518PS is a metric hex head cap screw designed for general mechanical fastening applications. It features an M3 x 0.50 thread profile with an 8 mm length under the head and is fully threaded along its entire shank. Manufactured from Grade 8.8 steel with a bright, uncoated finish, this fastener meets DIN 933 and ISO 4017 standards, making it a reliable choice for precision-toleranced assemblies where dimensional consistency matters. The 5.5 mm hex drive size is compatible with standard metric hex wrenches and socket sets. Electricians, plumbers, HVAC technicians, and general tradespeople use this type of fastener when assembling equipment panels, mounting brackets, and mechanical components.

This screw is suited for light-duty to medium-duty fastening tasks in residential and commercial applications. Typical uses include equipment enclosure assembly, control panel mounting, HVAC unit component attachment, and general mechanical fabrication work. Its fully threaded design allows engagement from any point along the shank, which is particularly useful in thin-material applications or where short thread engagement is a constraint. The metric M3 sizing is common in European-standard equipment, imported HVAC and electrical components, and precision machinery requiring standardized fastener profiles.

Key Features

• M3 x 0.50 thread size, 8 mm length under head, fully threaded shank
• Grade 8.8 steel construction for reliable tensile strength in mechanical assemblies
• Bright, uncoated finish suitable for indoor and protected environments
• Conforms to DIN 933 and ISO 4017 dimensional standards
• 5.5 mm hex drive compatible with standard metric wrenches and sockets

Compatibility

Designed as a standard metric replacement or service fastener for any application requiring an M3 x 0.50 x 8 mm fully threaded hex head cap screw per DIN 933 or ISO 4017 specifications.

Installation Notes

Installation requires a 5.5 mm metric hex wrench or appropriately sized socket driver. Ensure mating threads are clean and free of debris before driving the fastener. Do not overtighten small-diameter metric screws, as Grade 8.8 hardware at M3 sizing is susceptible to thread stripping in softer base materials such as aluminum or plastic. Follow applicable equipment manufacturer torque guidelines when specified.