Plastic Screws | McMaster-Carr

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Partially Threaded

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Metric Rounded Trapezoidal

Screw Size

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Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

Thread Direction

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Tensile Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 29,999 psi

Thread Fit

Metric Class 6g

Metric Class 6h

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

REACH

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Compliant with Exemptions

DFARS Specialty Metals

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3,058 Products

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

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Hex Head Screws

Hex Head Screws

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

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Tighten and loosen by hand without the need for tools

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

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

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

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Pull Handles and Knobs

Pull Handles and Knobs

Open and close cabinets, drawers, and doors on machines and equipment

Protective Caps

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Power Transmission

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

Facility and Grounds Maintenance

Toilet Seat Fasteners

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

Toilet Mounts

Secure toilet components with flanges and hardware kits

Urinal Flanges

Connect a urinal to your drainage system

Material Handling

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

Screw Conveyors

Screw Conveyors

Push material through fixed troughs

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