ASTM A307 Bolts | McMaster-Carr

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Specifications Met

Thread Size

Length

Finish

Hot-Dipped Galvanized

Threading

Partially Threaded

Material

Fastener Head Type

Head Width

System of Measurement

Head Height

Thread Direction

Tensile Strength

30,000 psi to 99,999 psi

Drive Style

External Square

Fastener Strength Grade/Class

Thread Spacing

Thread Type

Screw Size

RoHS

Thread Fit

Unified Standard Class 1A

Unified Standard Class 2A

Hardness

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Neck Type

Rounded Head Style

Head Diameter

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621 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

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

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

Square Head Screws

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Wood Screws

Fasten material to wood or pieces of wood to each other

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