Electro Hardware HHCS-1420-1.5-N Hex Head Cap Screw 1/4-20

Product Description

The ELECTRO HARDWARE HHCS-1420-1.5-N is a hex head cap screw machined from Grade 6/6 nylon to a 1/4-20 UNC thread specification with a 1.5-inch length under head. The partially threaded shank provides a smooth bearing surface near the head, which is useful in applications requiring controlled clamping without full-thread engagement. The uncoated nylon construction offers natural resistance to corrosion, moisture, and many chemicals, making it suitable for environments where metal fasteners would corrode or cause galvanic issues. Electricians, HVAC technicians, plumbers, and panel fabricators commonly use nylon fasteners when electrical isolation or non-magnetic properties are required. This screw conforms to ASTM D789-66 Type 1 GDE2 standards.

This fastener is well suited for light-duty mechanical assemblies, electrical enclosures, instrumentation panels, and HVAC equipment where non-conductive or corrosion-resistant fastening is specified. The 1/4-20 UNC thread size is one of the most common inch-series thread standards, making this screw compatible with a wide range of tapped holes and threaded inserts used across trade and industrial applications. Sold in packages of 100 with a minimum order quantity of 1 package, it is practical for both single-job use and stocking in a service van or shop.

Key Features

• Grade 6/6 nylon construction provides electrical insulation and corrosion resistance without coatings or treatments
• 1/4-20 UNC thread standard ensures broad compatibility with standard tapped holes and hardware
• Partially threaded shank allows controlled clamping force and smooth shank fit in clearance holes
• Uncoated finish eliminates concerns about coating delamination in wet or chemical-exposure environments
• Conforms to ASTM D789-66 Type 1 GDE2 material standard for nylon fasteners
• Packaged in quantities of 100 per package, suitable for shop stock or recurring service work

Compatibility

Designed as a standard 1/4-20 UNC hex head cap screw suitable for any application requiring a partially threaded nylon fastener in that thread size and length. No specific equipment or model compatibility was provided in the product data.

Installation Notes

Nylon fasteners have lower torque limits than metal equivalents and should be installed with a calibrated torque driver or carefully by hand to avoid stripping the nylon threads. Do not use impact drivers or power tools without torque-limiting clutch settings. In electrical enclosures or live panels, de-energize all circuits before installing or removing fasteners per applicable NEC requirements. Nylon can creep under sustained load, so periodic inspection of torque retention is recommended in vibration-prone assemblies.