Left-Hand Threaded Hex Head Cap Screws

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	Thread Direction Thread Direction	Show

	Left Hand

	Thread Direction Thread Direction	Hide


Right Hand	Left Hand

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Length Length

	Head Type Head Type


Hex	Socket

Rounded	Flat

	Material Material

Steel

Stainless Steel

	Threading Threading

	Fully Threaded
	Partially Threaded

	Head Height Head Height

	Fastener Strength Grade/Class Fastener Strength Grade/Class


Class 8.8	Class 12.9

Grade 5	Grade 8

	Thread Fit Thread Fit

	Thread Type Thread Type

UNC

Metric

UNF

	Drive Style Drive Style


External Hex	Hex

	Thread Spacing Thread Spacing

Coarse

Fine

	Head Width Head Width

	Tensile Strength Tensile Strength

60,000 to 99,999 psi

100,000 psi or greater

	Hardness Hardness

	Specifications Met Specifications Met

	Finish Finish

Black Oxide

Passivated

Zinc Plated

Zinc Yellow-Chromate Plated

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
Compliant

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Socket Head Profile Socket Head Profile

	Standard

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

RoHS Compliant

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279 Products

Screws and Bolts

Left-Hand Threaded Medium-Strength
Metric Class 8.8 Steel Hex Head Screws

These metric screws help prevent counterclockwise-moving parts from loosening. Use them for medium-strength fastening.

Left-Hand Threaded Medium-Strength
Grade 5 Steel Hex Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. For use in medium-strength fastening applications.

Left-Hand Threaded High-Strength
Steel Hex Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. For use in high-strength fastening applications.

Left-Hand Threaded 18-8
Stainless Steel Hex Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. Made from 18-8 stainless steel, these screws have good chemical resistance.

Left-Hand Threaded Alloy Steel Socket Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening.

Left-Hand Threaded 18-8 Stainless
Steel Socket Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent counterclockwise-moving parts from loosening. Made from 18-8 stainless steel, these screws have good chemical resistance.

Left-Hand Threaded Button Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic.

Metric Left-Hand Threaded Button Head Screws

Turn these metric screws to the left to tighten; once fastened, they prevent loosening from counterclockwise motion. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.

Metric Left-Hand Threaded Flat Head Screws

Tighten these metric screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.

Left-Hand Threaded Flat Head Screws

Tighten these screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.

Left-Hand Threaded Shoulder Screws

Tighten these shoulder screws by turning them to the left; once fastened, they resist loosening from counterclockwise motion.