ASME B18.6.3 Screws | McMaster-Carr

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System of Measurement

Thread Size

Length

Drive Style

Drilled Spanner

Material

Grade 2 Titanium

Stainless Steel

Fastener Head Type

Rounded Head Style

Finish

Black Zinc Plated

Zinc Yellow-Chromate Plated

Head Diameter

Threading

Partially Threaded

Flat Head Profile

Countersink Angle

Head Height

Screw Size

Drive Size

Thread Spacing

Thread Type

Tip Type

Thread Direction

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

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Fastening and Joining

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

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

Hex Head Screws

Hex Head Screws

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

Oval Head Screws

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

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