Metric Socket Screws | McMaster-Carr

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System of Measurement

Thread Type

Thread Size

Length

Material

Stainless Steel

Fastener Head Type

Thread Pitch

Drive Style

Hex with Pilot Recess

Socket Head Profile

Threading

Partially Threaded

Finish

Titanium Carbon Nitride (TiCN) Coated

Zinc Flake Coated

Head Diameter

Head Height

Shoulder Length

4 mm to 49.75 mm

6 mm to 49.75 mm

Shoulder Diameter

Thread Spacing

Drive Size

Fastener Strength Grade/Class

Thread Direction

Specifications Met

Tip Type

Tensile Strength

Less than 20,000 psi

20,000 psi to 49,999 psi

50,000 psi to 59,999 psi

60,000 psi to 99,999 psi

100,000 psi or greater

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

REACH

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8,674 Products

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Fastener Assortments

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

Building and Machinery Hardware

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

Communication

Reference Charts

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

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