Hexagon socket head M4X30 carbon steel screws

Overview

Meet the Hexagon socket head M4X30 carbon steel screws—a compact, dependable fastening solution designed for precision assemblies. With a 4 mm diameter and a 30 mm length, these screws strike the right balance between strong clamping force and unobtrusive profile, making them ideal for compact machinery, metal frames, and a range of DIY projects.

Why these screws stand out

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  Hex socket head design delivers a clean, recessed profile that sits flush or slightly proud, depending on your mounting surface. The Allen-drive enables easy, precise tightening with standard tools.
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  Carbon steel construction provides solid strength and rigidity for everyday fastening needs in non-corrosive environments, helping assemblies stay secure over time.
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  Precisely sized M4 x 30 mm dimensions suit a wide array of applications—from lightweight aluminum frame connections to wood-to-metal couplings—without excessive length or bulk.
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  Versatile for metal and wood projects when paired with compatible nuts, washers, or inserts, expanding its use across workshops, garages, and fabrication rooms.

Ideal use cases

• Machinery enclosures, control panels, and equipment housings where a low-profile fastener is beneficial
• Aluminum profiles and metal frame assemblies for DIY CNC, robotics, or workstation rigs
• Cabinetry, furniture frames, and projects requiring a strong, clean fastener that won’t protrude excessively
• Repair or retrofit work where reliable, repeatable torque is important

How to install and get the best results

For best performance, pair these screws with an appropriate nut, washer, or insert as needed. Use a standard hex/Allen key to achieve firm, controlled clamping without over-torquing. Start with a light pass to align the threads, then tighten to the required specification for your project. If you’re assembling against softer materials, consider using a washer to distribute load and protect surfaces.

Specs at a glance

Product: Hexagon socket head M4X30 carbon steel screws

Head type: Hex socket head

Diameter x Length: M4 x 30 mm

Material: Carbon steel

Final note

Whether you’re upgrading an existing build or finishing a new project, these M4X30 hex socket head screws offer reliable performance with a compact, professional finish. Add them to your toolkit for fast, secure assemblies that stand up to daily use.