Electro Hardware MTHS3003M07F16 Thumb Screw M3 X 0.5

Product Description

The ELECTRO HARDWARE MTHS3003M07F16 is a 303 stainless steel thumb screw designed for hand-tightening applications where tool-free fastening is required. The knurled head provides a secure grip surface, allowing technicians to drive and remove the fastener without a screwdriver or wrench. Built to metric thread standard M3 x 0.5 with an overall length of 16 mm, this fastener is suited for light-duty panel, enclosure, and instrument assembly work. The 303 stainless steel alloy delivers corrosion resistance and good machinability. It is supplied uncoated and conforms to QQ-S-763 material standards. Electricians, HVAC technicians, and panel builders commonly use this style of fastener in control enclosures and access panel assemblies.

This thumb screw is used in applications where frequent hand access is needed, such as removable access panels, electrical enclosures, instrumentation housings, and light mechanical assemblies. The M3 x 0.5 metric thread pitch is common in control panel hardware, DIN-rail accessory mounting, and small equipment enclosures found in both residential and light commercial trade installations. The without-shoulder design keeps the profile compact for tight clearances.

Key Features

• 303 stainless steel construction meeting QQ-S-763 material standard
• Knurled head for tool-free hand tightening and removal
• M3 x 0.5 metric thread, 16 mm overall length
• 8 mm head diameter and 5 mm head height for low-profile fitment
• Without-shoulder design for compact installation in tight spaces
• Uncoated finish suitable for corrosion-resistant applications

Compatibility

Designed as a standard M3 x 0.5 metric thumb screw for use in electrical enclosures, control panels, instrumentation housings, and light mechanical assemblies requiring tool-free fastener access.

Installation Notes

Installation requires no special tools due to the knurled hand-drive head. De-energize all electrical equipment before accessing enclosures or panels where this fastener is used. Verify thread engagement depth against the mating component to avoid stripping the 303 stainless steel threads, which are softer than hardened steel. Follow applicable NEC or equipment manufacturer guidelines when fastening panels on energized systems.