Hex Jackscrews

Looking for Hex Jackscrews?

You're in the right place. MF Supply stocks hex jackscrews, also known as jack screws, in steel with zinc yellow finish—ideal for aerospace, defense, industrial automation, robotics and other critical applications.

What We Offer:

• Product: 3/16 Hex Jackscrew
• Head: Hex

Sizes and Materials Offered:

• Inch Size: 3/16 hex diameter (across the flats), 3/16 body length, 4-40 external thread size, 3/8 external thread length, & 4-40 internal thread size
• Material: Steel
• Finish: Zinc Yellow

Why Choose Hex Jackscrews?

Hex Jackscrews, in steel zinc yellow, are wrenchable screw-lock fasteners used to secure and service D-sub and other panel-mount connectors across aerospace, defense, electronics, industrial automation, telecom equipment, and more. Their male/female threading and hex body enable positive torque, repeatable mating, and vibration-resistant retention of hoods, backshells, and I/O plates. The steel construction delivers strength and durability, while the zinc-yellow chromate finish provides enhanced corrosion protection and high visibility for quick identification during assembly and maintenance.

Ready to Buy?

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Add to cart and checkout online, or email us at [email protected] for custom quotes and bulk orders. Most popular sizes are in stock and ship within 24 hours.