Value Collection 140807EH 1/4-20 X 1/2 Inch Hex Head Machine Screw

Product Description

The VALUE COLLECTION 140807EH is a 1/4-20 hex head machine screw with an external tooth washer style, manufactured from steel with a zinc finish. It measures 1/2 inch in length under the head and is driven with a hex tool. Conforming to ASME B18.13a and SAE J82 standards, this screw is suited for mechanical assemblies, electrical enclosures, and general industrial fastening applications. It is sold in minimum order quantities of 100 pieces per package, making it appropriate for shop stock, service vehicle inventory, or production line use.

This fastener is used across a wide range of trade applications including HVAC equipment assembly, electrical panel work, plumbing fixture mounting, and general mechanical installations. The zinc finish provides basic corrosion resistance in dry to mildly humid indoor environments. The external tooth washer style helps resist loosening under vibration, which is relevant in equipment with rotating components or frequent thermal cycling.

Key Features

• 1/4-20 thread size in the inch measurement system
• 1/2 inch length under head for precise fastening depth
• Hex head and hex drive for wrench or socket installation
• External tooth washer style resists loosening under vibration
• Steel construction with zinc finish for corrosion resistance in dry environments
• Meets ASME B18.13a and SAE J82 fastener standards

Compatibility

Designed as a standard 1/4-20 inch-series machine screw suitable for use in equipment panels, brackets, enclosures, and assemblies that require a hex head fastener with an external tooth lock washer configuration.

Installation Notes

Installation is performed with a hex wrench, socket, or nut driver sized to the hex head. Power down all equipment and follow applicable lockout/tagout procedures before fastening or removing hardware in electrical or mechanical assemblies. Do not over-torque; consult the equipment manufacturer's fastener specifications for required clamp load. Fastener reuse after removal from vibration-critical joints is not recommended without inspection.