Value Collection 1406MSL 1/4-20 X 3/8 Fillister Slotted Machine Screw

Product Description

The VALUE COLLECTION 1406MSL is a 1/4-20 machine screw with a fillister head and slotted drive, designed for general-purpose mechanical fastening in metal, wood, and composite assemblies. The fillister head provides a tall, narrow profile with a deep slot that accepts a standard flat-blade screwdriver and offers greater torque transfer than a flat or pan head. Manufactured from steel with a zinc finish, this fastener meets ASME B18.6.3 and SAE J82 standards. The thread size is 1/4-20 with a length under head of 3/8 inches. This screw is sold in multiples of 100 pieces per order with a single-piece package quantity.

This fastener suits a wide range of light-duty to medium-duty applications including equipment panels, electrical enclosures, HVAC cabinet assemblies, junction box covers, and general mechanical subassemblies. The zinc finish provides basic corrosion resistance suitable for indoor and sheltered environments. Machinists, electricians, HVAC technicians, and general maintenance professionals regularly use fillister head slotted screws in confined-clearance applications where a low-profile head with reliable drive engagement is needed.

Key Features

• 1/4-20 thread size with 3/8-inch length under head for compact fastening applications
• Fillister head profile provides deeper slot depth and higher torque capacity than flat head designs
• Slotted drive compatible with standard flat-blade screwdrivers and slotted bits
• Steel construction with zinc finish for basic corrosion resistance in indoor environments
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• Sold without washer; minimum order quantity of 100 pieces

Compatibility

Designed as an OEM-style and general-replacement fastener for assemblies requiring a 1/4-20 fillister head slotted machine screw with a 3/8-inch length under head per ASME B18.6.3 specifications.

Installation Notes

Install using a flat-blade screwdriver or slotted bit driver sized to match the head slot to prevent cam-out and slot damage. Ensure mating threads are clean and free of debris before driving. Do not overtighten steel screws into softer base materials such as aluminum or plastic, as thread stripping can occur. Follow applicable equipment manufacturer torque specifications when fastening electrical enclosures or structural panels.