ISO Standard Socket Head Screws | McMaster-Carr

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System of Measurement

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Fastener Head Type

Material

Stainless Steel

Thread Pitch

Socket Head Profile

Threading

Partially Threaded

Finish

Zinc Flake Coated

Drive Style

Tamper-Resistant Torx

Head Diameter

Thread Type

Head Height

Thread Spacing

Fastener Strength Grade/Class

Thread Direction

Drive Size

Shoulder Length

Rounded Head Style

Tensile Strength

50,000 psi to 59,999 psi

60,000 psi to 99,999 psi

100,000 psi or greater

Color

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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Fastening and Joining

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

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

Shoulder Screws

Shoulder Screws

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

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