Midwest Fasteners Grade 8 Yellow Zinc Steel Coarse Thread Hex Cap Screw

Midwest Fasteners Grade 8 Yellow Zinc Steel Coarse Thread Hex Cap Screw

Midwest Fasteners' Grade 8 Yellow Zinc Steel Coarse Thread Hex Cap Screw line covers coarse-thread diameters of 1/4"-20, 3/8"-16, and 1/2"-13, with lengths available from 1/2" up to 6" depending on the diameter selected. Each bolt is machined from steel and finished in yellow zinc for corrosion resistance over bare steel in general indoor and light outdoor exposure. The hex head delivers fast installation and high torque transfer with a standard wrench or socket, the coarse thread pitch engages quickly while resisting stripping and cross-threading in tapped holes and matching hex nuts, and Grade 8 is the higher-strength SAE classification suited to demanding structural, mechanical, and equipment-mounting connections where load capacity matters. Select the diameter and length combination that matches your stack-up thickness and tapped-hole spec from the available sizes.

Key Features

• Size Range: Coarse-thread diameters of 1/4"-20, 3/8"-16, and 1/2"-13, with lengths from 1/2" through 6" across the family, for standard tapped holes and matching hex nuts.
• Material & Finish: Steel construction with a yellow zinc plated finish for added corrosion resistance over bare steel in general indoor and light outdoor exposure.
• Head Type: Hex head allows fast installation and high torque transfer with a standard wrench or socket.
• Grade: Grade 8, the higher-strength SAE classification suited to demanding structural and mechanical fastening applications.
• Thread Type: Coarse thread for easier starting and better resistance to cross-threading and debris fouling than fine-thread options.
• Country of Origin: Manufactured in China to the stated Grade 8 steel specification.

Technical Specifications

• Product Type: Hex Bolt
• Product Material: Steel
• Finish: Yellow Zinc
• Grade: Grade 8
• Thread Type: Coarse
• Country of Origin: China
• Size Options: 1/4"-20, 3/8"-16, and 1/2"-13 diameters, 1/2" to 6" lengths

Typical Applications

• Structural steel and metal fabrication assemblies requiring Grade 8 strength.
• Machinery and equipment mounting where thicker material stack-ups need a longer fastener.
• Automotive, trailer, and heavy equipment repair connections.
• General maintenance and fabrication shop stock for high-load hex bolt needs across multiple sizes.

Why Midwest Fasteners?

Midwest Fasteners supplies this hex cap screw family across a consistent range of 1/4"-20, 3/8"-16, and 1/2"-13 diameters and 1/2" to 6" lengths, built from Grade 8 steel with a yellow zinc finish. That gives contractors, fabricators, and maintenance techs a dependable, repeatable spec for high-strength hex bolt applications, with consistent grade and finish across sizes so matching bolts to nuts and tapped holes stays simple across a job, whether you're stocking a shop drawer or pulling fasteners for a single repair.