Black Phosphate Screws | McMaster-Carr

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	Finish Finish	Show

Black Phosphate

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	System of Measurement System of Measurement

Inch

Metric

	Length Length

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Head Type Head Type


Rounded	Hex

Flat

	Material Material

Steel

	Screw Features Screw Features


Flanged	With Washer

	Threading Threading

	Fully Threaded
	Partially Threaded

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Class 10.9	Grade 8

	Drive Style Drive Style


External Hex	Phillips

Square	Torx

	Screw Size Screw Size

	Tip Type Tip Type


Pointed	Blunt

Drilling

	Head Width Head Width

	Head Height Head Height

	For Use In For Use In

Plastic-Wood
Composite

Sheet Metal

Wood

	Thread Direction Thread Direction

	Right Hand

	Flange Diameter Flange Diameter

	Thread Type Thread Type

Metric

UNC

UNF

	Specifications Met Specifications Met

	Thread Spacing Thread Spacing

Coarse

Fine

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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384 Products

About Hex Head Screws and Bolts

High-Strength Grade 8 Steel Flanged Hex Head Screws

Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The flange distributes pressure over the surface, eliminating the need for a washer.

High-Strength Metric Class 10.9
Steel Flanged Hex Head Screws

These metric screws are at least 25% stronger than medium-strength steel screws. Use them in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. The flange distributes pressure where the screw meets the surface, so there's no need for a washer.

High-Strength Grade 8 Steel
Serrated-Flange Hex Head Screws

About 20% stronger than medium-strength steel screws, these Grade 8 steel screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. Serrations under the flange provide mild vibration resistance.

Tapping, Wood, and Drywall Screws

Rounded Head Screws with Washer for Sheet Metal

A free-rotating, permanently attached washer distributes holding pressure over a wider area than a flange and remains stationary to prevent scratching the material surface as you tighten the screw.

Torx Flat Head Thread-Cutting Screws for Metal

A Torx drive has more points of contact than a Phillips drive, allowing you to apply extra force with less slippage or damage to the recess.

Thread-Forming Screws for Joining Wood to Metal

Thread-forming screws press threads into drilled holes for a tight vibration-resistant assembly.

Rounded Head Screws for
Particleboard and Fiberboard

These Phillips head screws have a decorative rounded top that provides a finished appearance.

Thread-Forming Small-Head Screws for
Softwood and Plastic-Wood Composites

Thread-forming screws press threads into drilled holes for a tight, vibration-resistant assembly.

High-Hold Screws for Joining Drywall to Wood

Alternating high and low threads minimize driving torque and allow the screw to hold more material between threads for a stronger hold and better strip-resistance than standard drywall screws for wood.

Drilling Screws for Joining Drywall to Metal Framing

Power through drywall and into metal studs up to 0.105" thick.

Screws for Joining Drywall to Drywall

Hold sheets of drywall together until glue sets

Screws for Joining Drywall to Metal Framing

Attach drywall to metal studs up to 0.036" thick.

Drilling Screws for Metal Framing

A drill point powers through metal up to 0.105" thick.

Screws for Metal Framing

Attach metal framing to metal studs up to 0.036" thick.

Square-Drive Small-Head Screws
for Joining Drywall to Metal Framing

With a square-drive head, these screws attach drywall to metal studs up to 0.036" thick. The head is one-third smaller than other drywall screws.

Phillips Small-Head Screws for
Joining Drywall to Metal Framing

These screws have a head that's one-third smaller than other drywall screws. Use them to attach drywall to metal studs up to 0.036" thick.

Square-Drive Small-Head Drilling Screws
for Joining Drywall to Metal Framing

These square-drive screws have a drill point that powers through drywall and into metal studs up to 0.105" thick. Heads are one-third smaller than those of other drywall screws.

Phillips Small-Head Drilling Screws
for Joining Drywall to Metal Framing

A drill point powers through drywall and into metal studs up to 0.105" thick. Heads are one-third smaller than those of other drywall screws.

About Hex Head Screws and Bolts

Flanged Hex Head Screws