Value Collection 3788MSF Flat Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 3788MSF is a flat head slotted machine screw designed for general-purpose fastening applications across mechanical, structural, and trade assembly work. Threaded 3/8-16 UNC with an overall length of 5-1/2 inches, this screw meets ASME B18.6.3 and SAE J82 standards for dimensional and mechanical consistency. Constructed from steel with a zinc finish, it resists light corrosion and is suited for indoor and sheltered applications. The flat head profile sits flush with or below the mating surface, making it a practical choice wherever a low-profile fastener is required. Installers across HVAC, electrical, plumbing, and general mechanical trades will find this screw fits standard 3/8-16 tapped holes and threaded inserts.

This machine screw is appropriate for use in equipment panels, brackets, junction enclosures, mechanical assemblies, and structural framing connections where a 3/8-16 thread engagement is specified. The slotted drive accommodates a standard flat-blade screwdriver, which is common in field service and maintenance scenarios where hex or Torx tooling may not be on hand. The 5-1/2 inch overall length provides ample thread engagement for thicker stock or stacked material assemblies.

Key Features

• 3/8-16 UNC thread size for compatibility with standard tapped holes and hardware
• 5-1/2 inch overall length with full-length thread under the head
• Flat head profile for flush or countersunk installations
• Slotted drive accepts standard flat-blade screwdrivers
• Steel construction with zinc finish for light corrosion resistance
• Meets ASME B18.6.3 and SAE J82 fastener standards

Compatibility

Designed as an OEM-style replacement or service fastener for any assembly specifying a 3/8-16 UNC flat head slotted machine screw with a 5-1/2 inch overall length per ASME B18.6.3.

Installation Notes

Install using a properly sized flat-blade screwdriver to avoid cam-out or slot damage. For countersunk applications, verify the mating material is pre-drilled and countersunk to the correct angle before driving. De-energize and lock out any electrical or mechanical equipment before fastener replacement or panel work, per applicable NEC or OSHA procedures. Do not overtighten into soft base materials such as aluminum or plastic without appropriate thread inserts.