Value Collection R63088446 Machine Screw 2-56 X 3/8 in Round Head

Product Description

The VALUE COLLECTION R63088446 is a 2-56 UNC machine screw designed for precision fastening in light-duty mechanical and electrical assemblies. The round head profile provides a low-profile, dome-shaped bearing surface suitable for through-hole and clearance-fit applications. The slotted drive accepts a standard flat-blade screwdriver, making it a reliable choice in controlled-torque situations where cam-out risk is low. Machined from bright, uncoated brass, this screw offers natural corrosion resistance and electrical conductivity, properties that make it a practical selection in instrumentation, terminal boards, and enclosure work. The fastener measures 3/8 inches in length under the head on a 2-56 thread pitch.

This screw is commonly used in residential and commercial electrical panels, HVAC control boards, instrumentation housings, and light-gauge sheet-metal enclosures where a small-diameter brass fastener is specified. It is well suited to applications where ferrous fasteners are undesirable due to conductivity or corrosion concerns. Electricians, HVAC technicians, and instrument technicians regularly use fasteners in this size range when servicing terminal strips, grounding lugs, and low-voltage control wiring assemblies. The inch-measurement system and UNC thread form are standard across North American trade equipment.

Key Features

• 2-56 UNC thread form — standard inch-series coarse thread for reliable engagement in tapped brass or aluminum components
• Round head profile provides a wide bearing surface with a clean, low-profile appearance
• Slotted drive accommodates flat-blade screwdrivers for straightforward installation and removal
• Brass construction offers inherent corrosion resistance and electrical conductivity
• Bright, uncoated finish — no plating to interfere with electrical contact surfaces
• 3/8-inch length under head suits thin panel and circuit board fastening scenarios

Compatibility

Designed as an OEM-style replacement or service fastener for any application specifying a 2-56 UNC round-head slotted brass machine screw with a 3/8-inch length under the head and no washer face.

Installation Notes

De-energize all circuits and discharge any stored energy before servicing panels or control boards where these screws are used. A properly sized flat-blade screwdriver matched to the slot width reduces the risk of head damage and cam-out on small-diameter fasteners. Do not overtighten into tapped plastic or soft-metal bosses, as the 2-56 thread is fine enough to strip under excessive torque. NEC guidelines apply when fasteners are used in electrical enclosures.