Value Collection 0404ISP 4-40 X 1/4 Pan Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 0404ISP is a 4-40 unified coarse thread machine screw designed for light-duty mechanical assembly and fastening applications. It features a pan head profile with a slotted drive, allowing installation with a standard flat-blade screwdriver. The screw is manufactured from steel with a zinc finish that provides basic corrosion resistance. At 0.25 inches length under head, this fastener is suited for shallow through-hole or tapped-hole applications. It conforms to ASME B18.13a and SAE J82 standards, ensuring dimensional consistency across production and maintenance tasks. Maintenance technicians, assemblers, and trade professionals use this screw where a small-diameter, low-profile head fastener is required.

This machine screw is used in light mechanical assembly, control panel fabrication, enclosure hardware, and general equipment maintenance across HVAC, electrical, and related trades. The 4-40 thread size is common in instrument panels, junction boxes, and small component mounting. The pan head profile distributes clamping load evenly over flat or sheet metal surfaces. The slotted drive is compatible with standard manual and powered flat-blade tools. This screw ships in a minimum order quantity of 100 units, making it suitable for stocking in service vehicles or shop inventory.

Key Features

• 4-40 unified coarse thread for use in standard tapped holes and inserts
• Pan head profile provides a wide, low-profile bearing surface
• Slotted drive compatible with flat-blade screwdrivers and bits
• Steel construction with zinc finish for basic corrosion resistance
• Meets ASME B18.13a and SAE J82 dimensional standards
• Internal tooth washer style for added locking capability

Compatibility

Designed as a general-purpose 4-40 machine screw for use in any application requiring an inch-series unified coarse thread fastener with a pan head and slotted drive.

Installation Notes

Installation requires a correctly sized flat-blade screwdriver or bit to avoid cam-out and head damage. Ensure the mating tapped hole or nut is a 4-40 thread before driving to prevent cross-threading. Do not over-torque small-diameter machine screws, as the steel threads can strip in softer base materials such as aluminum or plastic. Consult applicable equipment service documentation for fastener torque requirements.