Value Collection MSPI0-500310-100B 5-40 Pan Head Screw 100pk

Product Description

The VALUE COLLECTION MSPI0-500310-100B is a 5-40 unified coarse-thread machine screw with a pan head and slotted drive, sold in a minimum quantity of 100 pieces. Manufactured from steel with a zinc-plated finish, this fastener meets ASME B18.6.3 and SAE J82 standards. It measures 5/16 inches in length under the head and does not include a washer. This screw is suited for general mechanical assembly, panel mounting, and light structural applications where a low-profile pan head and corrosion-resistant coating are required. Electricians, HVAC technicians, and general tradespeople commonly use this size in control panel and equipment enclosure assemblies.

This fastener fits residential and light commercial applications wherever a 5-40 thread is specified. It is commonly used in control boards, small enclosures, sheet metal panels, and instrument housings. The pan head profile provides a broad bearing surface for materials with tight clearance requirements. No washer is included or required under the head per the standard fitment for this configuration. Installers working in electrical panels, HVAC equipment, or light fabrication will find this a straightforward drop-in fastener where a 5-40 slotted pan head screw is called out by the equipment manufacturer.

Key Features

• 5-40 unified coarse thread for standard small-fastener applications
• Pan head profile with slotted drive for flat-blade screwdriver installation
• Steel construction with zinc-plated finish for corrosion resistance
• Meets ASME B18.6.3 and SAE J82 dimensional and material standards
• 5/16-inch length under head with no washer — measured from underside of head
• Sold in multiples of 100 pieces for job-site and shop-stock quantities

Compatibility

Designed as a standard 5-40 x 5/16-inch pan head machine screw suitable for any application specifying ASME B18.6.3 or SAE J82 compliant fasteners in that thread size and length.

Installation Notes

Install with a flat-blade screwdriver sized to the slot; an oversized or undersized driver can damage the slot and reduce torque transfer. When used in electrical enclosures or control panels, de-energize all circuits before fastener work per applicable NEC guidelines. Zinc plating provides light corrosion protection and is not rated for exterior or high-humidity environments without additional sealing. Do not use impact drivers with slotted-drive fasteners, as this frequently strips the head.