Hillman Fasteners 190189 Hex Bolt 3/8-16 X 3 in 50 Pack

Product Description

The HILLMAN FASTENERS 190189 is a 3/8-16 x 3 inch hex bolt manufactured from low carbon steel with a coarse thread pattern. This standard hex head fastener is designed for general-purpose structural and mechanical assembly applications. The coarse 3/8-16 thread pitch provides reliable clamping force and is compatible with standard 3/8-16 hex nuts and tapped components. Sold in a 50-count box, this SKU is suited for contractors, service technicians, and maintenance professionals who need reliable fastener stock on hand for field and shop use.

This hex bolt sees regular use in HVAC equipment mounting, plumbing bracket assembly, electrical panel support structures, and general mechanical installations. The 3-inch length accommodates moderate-depth through-bolt applications and stacked material assemblies. Low carbon steel construction is appropriate for interior and protected environments where mild-steel fasteners meet specification requirements. The coarse thread makes for faster installation and greater resistance to cross-threading in field conditions.

Key Features

• 3/8-16 coarse thread for fast engagement and reduced cross-threading risk
• 3-inch length suits through-bolt and stacked-material assembly applications
• Low carbon steel construction provides adequate strength for general mechanical and structural use
• Standard hex head accepts common 9/16 inch wrenches and sockets
• 50-count pack reduces per-unit cost for volume service and maintenance work

Compatibility

Designed for use with standard 3/8-16 hex nuts, flat washers, lock washers, and tapped components conforming to ASME B18.2.1 coarse-thread specifications.

Installation Notes

Installation is performed with a standard 9/16 inch wrench or socket driver. Apply fastener torque according to the equipment manufacturer's specification or applicable code requirement for the joint being assembled. Low carbon steel fasteners should not be used in applications requiring stainless, galvanized, or high-strength grade fasteners — verify material and grade requirements before installation. De-energize or isolate any equipment being worked on before beginning fastener installation or removal.