5/8"-11 Low Carbon Hex Jam Nut with Plain Finish

Low Carbon A563 Grade A Hex Jam Nut – Plain Finish | Inch Sizes | Light-Duty Industrial Fastener

The Low Carbon A563 Grade A Hex Jam Nut with Plain Finish is a dependable, cost-effective solution for light-duty fastening needs. Manufactured from low carbon steel and meeting ASTM A563 Grade A specifications, this jam nut is ideal for locking and adjusting nuts in a wide range of non-critical applications. The plain finish provides a clean, raw metal appearance, ideal for dry indoor environments or where additional coating is unnecessary.

Key Features:

• Material: Low carbon steel for ease of installation and cost efficiency

• Grade: A563 Grade A – suitable for general-purpose applications

• Finish: Plain (uncoated) for maximum thread engagement and conductivity

• Design: Hex jam nut – thinner profile for use as a locknut or in tight clearance areas

• Thread Type: UNC (Unified National Coarse)

• Size Range: Available in inch sizes from 1/4”-20 up to 1”-8

• Thread Fit: Class 2B – standard fit for most industrial threads

• Standards: Meets ASTM A563 Grade A and SAE J995 requirements

Why Choose a Hex Jam Nut?
Jam nuts are half the height of standard hex nuts, making them ideal as locking nuts when used in tandem with a full-height nut. Their slim design allows for use in space-restricted areas without compromising on thread engagement.

Common Applications:

• Machinery adjustment points

• Vibration-resistant assemblies

• Electrical and grounding applications

• HVAC, plumbing, and light construction

• Automotive repairs and small engines

Choose our Low Carbon A563 Grade A Hex Jam Nut with Plain Finish for reliable fastening performance in general-purpose and light industrial applications. Bulk pricing and a full range of sizes are available.