M2.5 Fasteners | McMaster-Carr

Filter by

System of Measurement

Thread Size

Length

Material

Stainless Steel

Drive Style

External Square

Fastener Head Type

Thread Pitch

Finish

Dry Film Lubricated

Zinc Yellow-Chromate Plated

Head Diameter

Head Height

Socket Head Profile

Threading

Partially Threaded

Rounded Head Style

Thread Type

Specifications Met

Installed Length

10 mm to 19.9 mm

Drive Size

Thread Spacing

Screw Size

Thread Fit

Metric Class 4g6g

Metric Class 4H

Metric Class 4H6H

Metric Class 5g6g

Metric Class 6g

Metric Class 6G

Metric Class 6h

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Flat Head Profile

Thread Direction

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

How can we improve?

832 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

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

Tapping Screws

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Studs

Press, weld, or screw in place to add a threaded fastening point

Tighten and loosen by hand without the need for tools

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Coupling Nuts

Connect and extend threaded rods

Square Nuts

Flat sides won’t spin in channels and square holes

Slotted Round Nuts

Slotted Round Nuts

Fasten with a screwdriver in tight spots where there's no room for a wrench

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Easy to tighten and loosen by hand for making frequent adjustments

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Press-Fit Nut Installation Tools

Press-Fit Nut Installation Tools

Everything you need to install press-fit nuts by hand

Fabricating and Machining

Fixturing Clamps

Fixturing Clamps

Secure your workpiece to a fixture table so it won't move during machining

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