Value Collection ST3/8-16X3 Hex Bolt 3/8-16 Unc 3in Ss Pack 5

Product Description

The VALUE COLLECTION ST3/8-16X3 is a self-sealing hex bolt designed for fastening applications that require both clamping force and a fluid or gas-tight seal at the bolt head. Machined from 18-8 stainless steel and passivated to maximize corrosion resistance, this bolt measures 3 inches in length under the head and carries a 3/8-16 UNC thread form. A silicone O-ring seated under the head creates the sealing surface, eliminating the need for a separate sealing washer. Plumbers, pipefitters, HVAC technicians, and industrial maintenance mechanics install this type of fastener where standard hex bolts would allow fluid ingress or leakage around the bolt hole.

This bolt is well suited for light commercial and industrial assemblies where moisture, mild chemicals, or pressurized fluids are present. Common applications include enclosure panels, pump housings, fluid manifolds, HVAC equipment covers, and any bolted joint where thread sealing and corrosion resistance must be addressed simultaneously. The 18-8 stainless steel construction makes it appropriate for both indoor and outdoor environments exposed to humidity, water, or mild corrosive agents. Sold in a pack of 5 with a minimum order quantity of 1 pack.

Key Features

• 18-8 stainless steel construction with passivation treatment for enhanced corrosion resistance
• Integrated silicone O-ring under the hex head provides a fluid and gas-tight seal at the bolt seat
• 3/8-16 UNC thread form for broad compatibility with standard inch-series tapped holes and nuts
• 3-inch length under head accommodates moderate stack-up in panels, housings, and flanges
• Hex drive allows installation and removal with standard open-end, box-end, or socket wrenches
• Pack of 5 units suits small-quantity service and repair needs

Compatibility

Designed as a direct-fit replacement or service fastener for any 3/8-16 UNC tapped hole application requiring a sealing hex bolt with a silicone O-ring and 3-inch grip length in 18-8 stainless steel.

Installation Notes

De-energize and depressurize the assembly before removing or installing fasteners in pressurized housings or fluid systems. Inspect the silicone O-ring for nicks or deformation before installation, as a damaged O-ring will not seal properly. Tighten to the torque specification listed in the equipment manufacturer's service documentation — do not estimate torque values. Follow applicable mechanical and plumbing codes for the installation environment.