Black Oxide Bolts | McMaster-Carr

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Thread Size

Length

Fastener Head Type

System of Measurement

Threading

Partially Threaded

Threaded on Both Ends

Socket Head Profile

Drive Style

External 12-Point

External Pentagon

External Square

Hex with Pilot Recess

Tamper-Resistant Hex

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Material

Stainless Steel

Thread Pitch

Head Diameter

Head Height

Fastener Strength Grade/Class

Thread Direction

Right Hand and Left Hand

Thread Spacing

Thread Type

Metric Trapezoidal

Drive Size

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Specifications Met

Federal Specification

Screw Size

Shoulder Length

Shoulder Diameter

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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14,439 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

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Rounded Head Screws

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

Hex Head Screws

Hex Head Screws

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

Shoulder Screws

Shoulder Screws

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

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

Set Screws

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

Carriage Bolts

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

Tighten and loosen by hand without the need for tools

T-Bolts

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

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

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Tapping Screws

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

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

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

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Torque-Limiting Keys

Torque-Limiting Keys

Used to install carbide inserts in cutting tools, a handle limits the amount of torque generated

Nutdrivers

Tighten and loosen nuts and bolts

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

Screwdrivers

Tighten and loosen screws

L-Keys

Turn fasteners from either end and reach into tight spots

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

T-Slot Nuts

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

T-Slot Cleaners

T-Slot Cleaners

Scrape debris out of machine table T-slots

Fixture Clamps

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

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

Die Spring Screw Caps

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

Ball Screws and Nuts

Ball Screws and Nuts

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

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

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