Electro Hardware 4501-M07-F16 Captive Screw 4-40 Unc

Product Description

The ELECTRO HARDWARE 4501-M07-F16 is a slotted-drive captive screw designed to stay retained in an assembly panel even when fully disengaged from its mating thread. It carries a 4-40 UNC thread with a 15/32-inch length under the head, measured as 0.468 inches decimal. The fastener is machined from 18-8 stainless steel and left uncoated, giving it solid corrosion resistance without added surface treatments. The rounded head measures 0.25 inches in diameter and 0.125 inches in height. This screw suits electronic enclosures, control panels, and light industrial assemblies where tool-accessible, captive fastening is required.

Captive screws like the 4501-M07-F16 are commonly installed in control panel doors, access covers, and chassis assemblies across HVAC controls, electrical enclosures, and instrumentation housings. The slotted drive accepts a standard flat-blade screwdriver, making it accessible in tight service environments. The 4-40 UNC thread is a fine-pitch standard widely used in light-gauge metal panels. This screw is sold individually per package with a minimum order quantity of 5 units, which should be accounted for when placing orders for service stock or new panel builds.

Key Features

• Captive design keeps the screw retained in the panel when disengaged, preventing loss during service
• 4-40 UNC thread standard suits light-gauge metal and thin panel applications
• 18-8 stainless steel construction provides corrosion resistance without plating or coating
• Slotted drive compatible with standard flat-blade screwdrivers
• Rounded head with 0.25-inch diameter and 0.125-inch height for low-profile seating
• Meets QQ-S-763 stainless steel material standard

Compatibility

Designed as an OEM-style captive fastener for light-gauge metal panels and enclosures using 4-40 UNC threaded inserts or clinch hardware in control panel and chassis applications.

Installation Notes

Installation is performed with a standard flat-blade screwdriver sized to the slotted head. Confirm the mating panel insert or threaded hole is tapped to 4-40 UNC before installing. Do not overtorque small-diameter stainless fasteners, as galling can occur; apply thread lubricant if repeated removal is expected. Shut down and de-energize any enclosure or control panel before accessing captive fasteners on live equipment.