ASTM Hex Head Cap Screws | McMaster-Carr

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Specifications Met

System of Measurement

Thread Size

Length

Threading

Partially Threaded

Fastener Head Type

Material

Stainless Steel

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Drive Style

Tamper-Resistant Hex

Socket Head Profile

Thread Type

Head Height

Grip Length

Head Diameter

Head Width

Thread Direction

Tensile Strength

60,000 psi to 99,999 psi

100,000 psi or greater

Thread Spacing

Drive Size

Thread Fit

Metric Class 4g6g

Metric Class 5g6g

Metric Class 6g

Metric Class 6h

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

DFARS Specialty Metals

Screw Size

RoHS

Export Control Classification Number (ECCN)

REACH

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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

Flat Head Screws

Flat Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

Wood Screws

Fasten material to wood or pieces of wood to each other

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.)