Value Collection ST5/16-18X2 Hex Bolt 5/16-18 Unc 2in Ss

Product Description

The VALUE COLLECTION ST5/16-18X2 is a self sealing hex bolt designed for fastening applications that require a leak-resistant connection. Manufactured from 18-8 stainless steel and passivated for enhanced corrosion resistance, this bolt features a silicone O-ring seated under the head to create a seal against fluid or gas intrusion at the fastener point. The 5/16-18 UNC thread pattern and 2-inch length under head make it suitable for a wide range of mechanical and structural assembly tasks. Sold in a pack of 5, this fastener is commonly specified by HVAC technicians, plumbers, and industrial maintenance professionals where both clamping force and a reliable seal are required in a single fastener.

This hex bolt is well suited for use in HVAC equipment enclosures, plumbing manifolds, pumping systems, and general mechanical assemblies where moisture, chemicals, or pressure differentials could allow fluid migration through a standard unsealed fastener hole. The passivated 18-8 stainless steel construction holds up in both indoor and outdoor environments, as well as in wet or mildly corrosive conditions. Installers working on refrigeration casings, pump housings, or panel covers will find this fastener useful where a conventional bolt would require a separate sealing washer or thread sealant.

Key Features

• Integrated silicone O-ring under the head creates a seal without a separate sealing washer
• 18-8 stainless steel construction resists corrosion in wet and mildly chemical environments
• Passivated finish enhances surface corrosion resistance beyond the base alloy
• 5/16-18 UNC thread for broad compatibility with standard inch-series tapped holes
• 2-inch length under head accommodates typical panel and housing wall thicknesses
• Pack of 5 units per order, minimum order quantity of 1 pack

Compatibility

Designed as an OEM-style replacement or service fastener for any application requiring a 5/16-18 UNC hex bolt with an integral sealing O-ring in 18-8 stainless steel.

Installation Notes

Installation should be performed by a qualified technician or mechanic familiar with fastener torque practices for stainless steel hardware. Before removal or installation, de-energize or depressurize the equipment being serviced per applicable codes and manufacturer procedures. Use a standard hex wrench or socket driver sized for the hex head. Take care not to overtighten stainless steel fasteners, as galling of the threads can occur without proper lubrication or controlled torque application.