McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

UNC

UNF

Metric

	Head Type Head Type


Socket	Hex

Flat	Rounded

	Length Length

	Material Material

Stainless Steel

Steel

	Threading Threading

	Fully Threaded
	Partially Threaded

	Drive Style Drive Style


Hex	External Hex	Slotted

	Head Height Head Height

	Vent Diameter Vent Diameter

	Head Diameter Head Diameter

	Thread Spacing Thread Spacing

Coarse

Fine

	Thread Fit Thread Fit

	Tensile Strength Tensile Strength

	Hardness Hardness

	Drive Size Drive Size

	Specifications Met Specifications Met

ASME

ASTM

Mil. Spec.

SAE

DIN

ISO

Fed. Spec.

NAS

	Locking Type Locking Type


Wire	Cotter Pin

	Thread Pitch Thread Pitch

	Hole Diameter Hole Diameter

	Finish Finish

	Head Width Head Width

	Rounded Head Style Rounded Head Style


Button	Fillister

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489 Products

About Socket Head Screws

Vented Socket Head Screws

Vibration-Resistant
Socket Head Screws

Prevent loosening from vibration with these screws, which have a locking feature to hold them tight.

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.

Vented Flat Head Screws

These screws are drilled through the shaft to vent fluid and gases trapped under the screw.

Rounded Head Screws

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

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