Electro Hardware 4101M07F16 Captive Screw 4-40 Unc

Product Description

The ELECTRO HARDWARE 4101M07F16 is a slotted drive captive screw designed to stay retained in an assembly panel or component even when fully backed out. It carries a 4-40 UNC thread and an under-head length of 21/32 inches, making it suited for close-tolerance fastening applications where conventional loose fasteners are impractical. Constructed from 18-8 stainless steel with an uncoated finish, it resists corrosion in moderate environments. The head measures 5/16 inches in diameter and 3/16 inches in height. Mechanical and electrical technicians working on enclosures, panels, and electronic assemblies install this type of hardware during assembly and service operations.

This captive screw is used in panel fabrication, electronic enclosure assembly, and control box construction across industrial, commercial, and light trade applications. Its captive design prevents screw loss during repeated access cycles, which is especially useful in electrical panels, junction boxes, and instrument housings where small hardware must remain with the assembly between service visits. A standard flat-blade screwdriver is all that is required for installation.

Key Features

• Captive design keeps screw retained in panel when disengaged, preventing hardware loss during service
• 4-40 UNC thread standard for compatibility with common tapped panels and inserts
• 18-8 stainless steel construction provides corrosion resistance in moderate-duty environments
• Slotted drive accepts standard flat-blade screwdrivers - no specialty tooling required
• Uncoated finish; no surface treatment to interfere with electrical grounding contact where applicable
• Meets QQ-S-763 material standard for stainless steel fasteners

Compatibility

Designed as an OEM-style captive panel fastener for assemblies tapped to 4-40 UNC thread specification. Suitable for use in enclosures, control panels, and electronic housings requiring retained hardware.

Installation Notes

Installation is performed with a flat-blade screwdriver sized to the slotted head. Verify the mating panel or insert is tapped to 4-40 UNC specification before installation. Do not overtighten into thin sheet material, as stainless fasteners in light-gauge panels can strip threads if torque is not controlled. Follow applicable assembly documentation for the host equipment.