Black Oxide Fasteners | McMaster-Carr

Filter by

System of Measurement

Thread Size

Length

Finish

Fastener Head Type

Threading

Drive Style

Material

Socket Head Profile

Head Diameter

Head Height

Thread Pitch

Thread Direction

Thread Type

Drive Size

Thread Spacing

Screw Size

Fastener Strength Grade/Class

Tensile Strength

Specifications Met

Shoulder Diameter

Shoulder Length

Rounded Head Style

How can we improve?

15,201 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

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

Hex Head Screws

Hex Head Screws

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

Tighten and loosen by hand without the need for tools

Tapping Screws

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

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

Fastener Assortments

Fastener Assortments

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

Wood Screws

Fasten material to wood or pieces of wood to each other

T-Bolts

Turn by hand for easy fastening, use as a handle, or attach as a point for straps and clamps

Carriage Bolts

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

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Elevator Bolts

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

Studs

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

Flange Nuts

The flange distributes pressure, so you don't need a washer

Hex Nuts

Handle most general fastening needs

Panel Nuts

Extremely thin for tight spots such as electrical panels; also known as dress nuts

Push-Button Nuts

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

Locknuts

Hold fasteners in place to prevent loosening from vibration

Coupling Nuts

Connect and extend threaded rods

Easy to tighten and loosen by hand for making frequent adjustments

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Square Nuts

Flat sides won’t spin in channels and square holes

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Lock Washers

Resist vibration to prevent fasteners from loosening

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Finishing Washers

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

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

Clevis Pins

Secure parts in place and lock with a cotter pin or retaining ring

Dowel Pins

Align parts before assembly or use as a pivot, shaft, or hinge to join moving components

Spring Pins

Squeeze and insert into tight holes to hold parts in place with tension

Fabric Snaps

Join soft, heavy fabrics such as leather and canvas

Retaining Rings

Retaining Rings

Hold components on a shaft

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Shims

Level, align, and adjust spacing on fasteners, shafts, and machine components

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

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

Ball Screws and Nuts

Ball Screws and Nuts

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

Fabricating and Machining

T-Slot Bolts

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

T-Slot Nuts

Combine with setup studs or bolts to mount fixtures to machine tables

T-Slot Nut and Setup Stud Kits

T-Slot Nut and Setup Stud Kits

Mount fixtures of different sizes to your machine table

T-Slot Cleaners

T-Slot Cleaners

Scrape debris out of machine table T-slots

Setup Studs

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

Clamps

Hold workpieces securely in place

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

Material Handling

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

Eyebolts

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

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

U-Bolt Plates

Reinforce mounted U-bolts for a more secure hold

Twist Ties

Wind the ends to bundle cable and wire or close bags and sacks

Rope Cleats

Temporarily secure rope

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Machine Handles

Machine Handles

Arms give you extra leverage to secure and position jigs, fixtures, and other equipment

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