M4 Screws | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size	Show

	Thread Size Thread Size	Hide

	Thread Pitch Thread Pitch

	Length Length

	Material Material

	Finish Finish

	Head Type Head Type


Socket	Rounded

Hex	Flat

Headless	Thumb

Oval

	Drive Style Drive Style


Hex	External Hex	Phillips

Slotted	Torx Plus	Torx

Tamper- Resistant Torx	Hex with Pilot Recess	Drilled Spanner

Tamper- Resistant Hex	Wrench Flat	No Drive

	Threading Threading

Fully Threaded

Partially Threaded

Threaded on Both Ends

Threaded on One End

	Thread Direction Thread Direction


Right Hand	Left Hand

	Socket Head Profile Socket Head Profile


Standard	Low

Ultra-Low

	Head Diameter Head Diameter

	Head Height Head Height

	Specifications Met Specifications Met

	Thread Spacing Thread Spacing

Coarse

Fine

	Rounded Head Style Rounded Head Style


Button	Pan

Truss	Round

Cheese

	Drive Size Drive Size

	Thread Type Thread Type

	Tensile Strength Tensile Strength

	Flat Head Profile Flat Head Profile


Standard	Undercut

	Countersink Angle Countersink Angle

90°

100°

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Class 8.8	Class 10.9

Class 12.9

	Thread Fit Thread Fit

2,319 Products

Fasteners

Socket Head Screws

With a deeper drive than flat and rounded head screws, socket head screws withstand more torque for a tighter hold. Install in a counterbored hole or above the surface.

Rounded Head Screws

A domed head sits above the surface of your material. Includes screws such as pan, button, binding, and truss head screws.

Hex Head Screws

Hex head screws are easy to install with a wrench for a secure hold. Use them with a nut or in tapped holes.

Flat Head Screws

Flat and oval head screws are angled under the head to fit in countersunk holes.

Tapping, Wood, and Drywall Screws

While other screws and bolts require holes with threads, tapping screws create their own threads.

Shoulder Screws

A cylindrical shoulder under the head allows parts to rotate around and slide along its length, so these screws are often used to guide and align components.

Set Screws

Unlike screws that hold materials together with threads, set screws exert pressure at the tip to hold objects in place.

Thumb Screws

Thumb screws provide a secure grip for tightening and loosening by hand.

Binding Barrels and Screws

Use these as a low-profile alternative to standard nut and bolt combinations.

Captive Panel Screws

Secure panels and enclosures while allowing access. Screws become part of the panel when installed, so they won't fall out and get lost.

Threaded Rods and Studs

Male-Female Threaded Hex Standoffs

Thread Adapters

Adapters connect two female threads, two male threads, or a male thread and a female thread.

Spring Plungers

A spring projects the nose to apply accurate, consistent pressure for positioning, indexing, and ejecting parts.

Other Screws

Threaded-Stud Knobs

Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Lead Screws and Screw Jacks

Connecting Rods

Designed for use with right-hand threaded rod ends, these rods have right-hand threads on both ends. Use them for remote valve operators, throttle controllers, shifting mechanisms, and virtually any push/pull assembly.

Center-Locating Punches
for Threaded Holes

Also known as transfer screws, these punches have a uniform shoulder height so you can quickly transfer multiple hole locations at once.

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