Grade 9 Steel Cap Screws | McMaster-Carr

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Length

Thread Size

Head Height

System of Measurement

Shoulder Diameter

Shoulder Length

Material

Stainless Steel

Fastener Head Type

Thread Length

Thread Pitch

Threading

Partially Threaded

Socket Head Profile

Drive Style

External 12-Point

External Square

Head Diameter

Fastener Strength Grade/Class

ASTM Grade A325

Finish

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Thread Type

Drive Size

Thread Spacing

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Thread Direction

Head Width

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

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394 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

Shoulder Screws

Shoulder Screws

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

12-Point Screws

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

Set Screws

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

Flat Head Screws

Flat Head Screws

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

Square Head Screws

Square Head Screws

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

Fabricating and Machining

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

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