Value Collection ST5/16-18X1 Hex Bolt 5/16-18 Ss Pack 5

Product Description

The VALUE COLLECTION ST5/16-18X1 is a self-sealing hex bolt designed for applications where a fluid-tight or vibration-resistant fastener is required. Built from 18-8 stainless steel and passivated for enhanced corrosion resistance, this bolt features a silicone O-ring under the head that compresses during installation to form a seal at the fastener seat. The thread size is 5/16-18 UNC with a 1-inch length under the head. Sold in a pack of 5, these bolts suit maintenance, repair, and fabrication tasks across HVAC, plumbing, pool equipment, and general mechanical assemblies where moisture or chemical exposure is a concern.

Self-sealing hex bolts of this type are commonly used in applications where standard fasteners would allow fluid ingress or require a separate sealing washer. Typical install scenarios include enclosure panels, pump housings, heat exchanger covers, and outdoor or wet-environment equipment mounting. The UNC thread pattern makes these compatible with standard inch-system tapped holes and nuts. The 18-8 stainless steel construction handles freshwater, mild chemical, and moderate temperature environments without significant corrosion. Trade technicians in HVAC, pool service, and plumbing will recognize this bolt as a direct-fit solution for O-ring-style sealing points.

Key Features

• Silicone O-ring under the head creates a fluid-tight seal at the fastener seating surface
• 18-8 stainless steel construction with passivation treatment for improved corrosion resistance
• 5/16-18 UNC thread conforms to standard inch coarse-thread specifications
• 1-inch length under head suits typical panel and housing thicknesses
• Hex drive head is compatible with standard wrenches and sockets
• Pack of 5 bolts per order

Compatibility

Designed as a standard 5/16-18 UNC self-sealing hex bolt for use in any application requiring a coarse-thread inch-series fastener with an integrated O-ring seal at the head.

Installation Notes

Installation requires a standard hex wrench or socket sized for the bolt head. Power down or depressurize any system before removing or replacing fasteners on pressurized enclosures or housings. Do not overtighten, as excessive torque can extrude or damage the silicone O-ring and compromise the seal. Follow applicable equipment manufacturer torque guidance and relevant codes such as ASME or NEC where fastener specifications are prescribed.