303 Stainless Steel Screws | McMaster-Carr

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Stainless Steel

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Partially Threaded

Threaded on Both Ends

Threaded on One End

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Socket Head Profile

Rounded Head Style

Finish

Corrosion-Resistant Coated

Galvanic Barrier Coated

Titanium Carbon Nitride (TiCN) Coated

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Metric Rounded Trapezoidal

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Thread Spacing

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Federal Specification

Thread Direction

Right Hand and Left Hand

Flat Head Profile

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Countersink Angle

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DFARS Specialty Metals

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Export Control Classification Number (ECCN)

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26,124 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

Flat Head Screws

Flat Head Screws

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

Hex Head Screws

Hex Head Screws

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

Tapping Screws

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

Shoulder Screws

Shoulder Screws

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

Set Screws

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

Tighten and loosen by hand without the need for tools

Oval Head Screws

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

Wood Screws

Fasten material to wood or pieces of wood to each other

Carriage Bolts

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

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

Studs

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

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

Pentagon Head Screws

Pentagon Head Screws

Create a tamper-resistant joint with a head than can only be removed with a 5-point socket

Elevator Bolts

Create a flush joint to allow movement in tight spaces such as grain elevators and belting systems

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Drywall Screws

Fasten panels of drywall to materials such as wood, metal, and drywall

Binding Barrels

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

Single-End Studs

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

Standoffs

Separate, position, or connect components in assemblies

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Threaded Rods

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

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Spring Plungers

Spring Plungers

Apply accurate, consistent pressure for positioning, indexing, and ejecting parts

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

Weld Nuts

Weld to metal surfaces to add permanent threads

Captive Pins

Press into holes in thin materials like panels and circuit boards to permanently join or align them

Screw Nails

Drive like nails but hold like screws in drilled holes in wood, plastic, drywall, and masonry

Nails

Drive into wood, plastic, drywall, and masonry

Anchors

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

Rivets

Join materials together permanently, especially when too thin or fragile to fasten with screws

Power Transmission

Precision Lead Screws

Precision Lead Screws

Pair with precision lead screw nuts for accurate starts and stops in your assembly

Precision Lead Screw Nut Flanges

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

Connecting Rods

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

Lead Screws and Nuts

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

Lead Screw Collars

Lead Screw Collars

Position components and limit travel along a lead screw

Ball Screw Nuts

Ball Screw Nuts

Internal ball bearings roll on ball screws for low friction when moving components

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Leveling Mounts

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

Electrical

Electrical Enclosure Fasteners

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

Fabricating and Machining

Setup Studs

Secure setup clamps and fixtures to your machine table or assemble heavy machines

T-Slot Bolts

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

Clamping Screws

Clamping Screws

Apply pressure through a flat-tipped screw to hold material in place

Fluid Handling

Float Rods

Connect valve bodies and floats to build or repair a float valve

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