Left Hand Bolts | McMaster-Carr

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System of Measurement

Thread Size

Thread Direction

Right Hand and Left Hand

Threading

Partially Threaded

Fastener Head Type

Material

Stainless Steel

Fastener Strength Grade/Class

Thread Pitch

Thread Type

Shank Thread Direction

Head Height

Thread Spacing

Shank Thread Size

Thread Fit

Metric Class 5g6g

Metric Class 6g

Metric Class 6h

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Socket Head Profile

Finish

Phosphate Coated

Zinc Yellow-Chromate Plated

Specifications Met

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Head Width

Drive Style

Drive Size

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

How can we improve?

1,455 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

Shoulder Screws

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Weld Nuts

Weld to metal surfaces to add permanent threads

Power Transmission

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

Lead Screw Nuts

Lead Screw Nuts

Mate with lead screws to move components in a straight line

Lead Screws

Pair with lead screw nuts to move components in a straight line

Lead Screw Collars

Lead Screw Collars

Position components and limit travel along a lead screw

Ball Screws and Nuts

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)