Value Collection 0406MSB 4-40 X 3/8 in Binding Head Slotted Machine

Product Description

The VALUE COLLECTION 0406MSB is a 4-40 unified coarse thread machine screw with a binding head and slotted drive, designed for secure fastening in light-duty mechanical assemblies. Manufactured from steel with a zinc finish, this fastener measures 3/8 inches in length under the head and conforms to ASME B18.6.3 and SAE J82 standards. The binding head profile sits low and wide, distributing clamping load across the bearing surface and resisting loosening from vibration. Suitable for electricians, HVAC technicians, panel builders, and general mechanical assemblers working with small-format threaded components.

This screw is used in applications requiring a small-diameter, fine-pitch fastener with a positive slotted drive. Common installations include electrical enclosures, control panels, instrument housings, small appliance assemblies, and light sheet-metal fabrication. The 4-40 thread is a standard size in North American fastener practice, making it widely compatible with tapped holes and threaded inserts machined or stamped to that specification. The zinc coating provides baseline corrosion resistance for indoor and sheltered environments.

Key Features

• 4-40 unified coarse thread for reliable engagement in standard tapped holes
• Binding head style provides wide bearing surface to resist pull-through and loosening
• Slotted drive compatible with standard flat-blade screwdrivers and bit drivers
• Steel construction with zinc finish for corrosion resistance in dry or sheltered indoor environments
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• Sold individually with a minimum order quantity of 100 pieces per order

Compatibility

Designed as a standard 4-40 x 3/8-inch binding head machine screw for use in any application requiring a fastener conforming to ASME B18.6.3 dimensions and SAE J82 material grade.

Installation Notes

Install using a flat-blade screwdriver or slotted bit driver sized appropriately for the head recess to avoid cam-out and head damage. Ensure the mating tapped hole or threaded insert is clean and dimensionally correct for 4-40 threads before driving. De-energize and lock out any electrical panel or control enclosure before replacing fasteners in live equipment. Do not over-torque; binding head screws at this diameter are susceptible to thread stripping if driven beyond hand-tight plus a controlled final turn.