40-mm 4mm Machine Screws

Machine Screws for Precise and Secure Threaded Fastening

Machine screws are designed to fasten metal, plastic and other materials by threading into tapped holes or pairing with nuts for a secure connection. Commonly used in electronics, appliances, machinery and furniture assembly, these screws support precise alignment and consistent holding strength. Available in multiple materials and head styles, Lowe’s offers machine screws suited for both professional and DIY applications.

Benefits of Machine Screws

• Precise Fastening Control: They’re engineered to deliver uniform threading for accurate alignment and consistent tightening.
• Versatile Application: Machine screws are suitable for electronics, cabinetry, equipment assembly and light mechanical projects.
• Multiple Material Compatibility: Steel, brass and nylon options support different strengths, corrosion resistances and conductivities.
• Sleek Appearance: Head styles, such as flat, oval and pan, support flush or low-profile finishes.
  
• Reliable Fastening: These screws work well in tapped holes or when paired with matching nuts.

Key Features of Machine Screws

• Multiple Head Types: These screws are available in round, pan, socket, flat and oval heads to support different installation and finish requirements.
• Material Options: Steel offers strength, brass supports corrosion resistance and nylon provides lightweight or nonconductive performance.
• Corrosion-Resistant Choices: Stainless steel machine screws are well suited for outdoor, damp or high-humidity environments.
• Flat-Head Options: Flat-head machine screws allow for flush mounting in countersunk holes.
• Consistent Threading: This ensures a dependable fit and secure fastening with compatible components.

How to Choose Machine Screws

• Choose flat or oval heads for flush finishes, pan or round heads for surface mounting, or socket heads for higher torque applications.
• Steel suits strength-focused projects, brass works well in corrosive environments and nylon supports lightweight assemblies.
• Stainless steel machine screws are ideal for moisture-prone or outdoor applications.
• Match the screw size and thread pitch to the tapped hole or nut being used.
• Machine screws are commonly used with nuts, washers or threaded inserts, depending on the project requirements.

From assembling electronics to securing components in equipment and fixtures, machine screws provide dependable fastening for precision projects. Whether you’re using flat head machine screws for a flush finish or stainless steel machine screws for added corrosion resistance, these fasteners support accuracy and durability. Shop machine screws along with compatible nuts, washers and threaded inserts at Lowe’s.