1-14 x 5 Yellow Zinc Grade 8 Fine Thread Hex Head Cap Screw

Description

1-14 x 5 Grade 8 Yellow Zinc Fine Thread Hex Cap Screw is a high-strength fastener made from heat-treated, medium-carbon alloy steel with a yellow zinc chromate coating and a finer thread pitch, offering superior holding power in metal-to-metal applications.

Hex cap screws have a flat bearing surface, a hexagonal head, and a partially or fully threaded shank. Their six-sided head allows for easy tightening with standard wrenches and sockets, and the fine thread pitch provides increased tensile strength and more precise torque control compared to coarse thread equivalents.

Grade 8 Yellow Zinc Fine Thread

• Grade 8 yellow zinc fine thread hex cap screws carry the same high tensile strength as standard Grade 8, with the added benefit of a finer thread pitch for increased holding power and greater resistance to loosening under vibration
• The yellow zinc chromate coating provides enhanced corrosion resistance and serves as a visual identifier for the Grade 8 designation

1-14 x 5 Grade 8 Yellow Zinc Fine Thread Hex Cap Screw Features

• High torque capacity due to the six-sided head, allowing use with wrenches, ratchets, and impact drivers
• Fine thread pitch provides greater tensile strength, more precise torque control, and improved resistance to loosening compared to coarse thread
• Maximum strength among standard zinc grades, with six radial lines on the head for easy grade identification

Common Uses

• Precision machinery, automotive, and aerospace applications where vibration resistance is critical
• Metal-to-metal fastening requiring tight tolerances and fine adjustment
• Industrial manufacturing, heavy equipment, and high-performance mechanical assemblies

Application

• Only insert into a pre-drilled and, when required, tapped hole with a matching fine thread tap
• Use a wrench, socket, or impact driver sized to the hex head
• Pair with a matching fine thread nut and washer; do not mix with coarse thread nuts or tapped holes

Tips

• Always use a washer under the head to distribute load and prevent surface damage
• Hex cap screws are measured from directly under the head to the tip of the threaded shank
• Fine thread fasteners require a matching fine thread nut or tapped hole — always confirm thread pitch compatibility before installation