1"-8 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Fastener Strength Grade/Class

Threading

Threaded on Both Ends

Threaded on One End

Finish

Black Oxide

Cadmium Plated

Cadmium Yellow-Chromate Plated

Chrome Plated

Galvanized

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Fastener Head Type

Thread Type

Thread Spacing

Thread Direction

Right Hand and Left Hand

Specifications Met

Head Width

Nut Type

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Not Rated

Thread Fit

Acme Class 2C

Acme Class 2G

ASME Interference Class 5

Metric Class 6H

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Thread Length

DFARS Specialty Metals

Performance

Drive Style

Grip Length

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Fastener Strength Rating

Export Control Classification Number (ECCN)

EAR99

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1,105 Products

Fastening and Joining

Hex Head Screws

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

272 products

Socket Head Screws

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

54 products

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

10 products

Flat Head Screws

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

18 products

Set Screws

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

30 products

Shoulder Screws

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

16 products

Hex Nuts

Handle most general fastening needs

77 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

43 products

Square Nuts

Flat sides won’t spin in channels and square holes

7 products

Coupling Nuts

Connect and extend threaded rods

18 products

Cap Nuts

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

8 products

Flange Nuts

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

10 products

Socket Nuts

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

2 products

Split Nuts

Swivel to attach at any point on a threaded rod for quick installation

1 product

Threaded Rods

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

186 products

Threaded Inserts

Create new threads or repair stripped threads

38 products

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

1 product

Thread Adapters

Join threads of a different type, size, and gender

21 products

Anchors

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

53 products

Single-End Studs

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

7 products

Threaded Insert Installation Tools

Install helical, key-locking, slotted-drive, and other threaded inserts

10 products

Power Transmission

Rod Ends

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

8 products

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

13 products

Precision Lead Screw Nut Flanges

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

1 product

Lead Screws and Nuts

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

16 products

Material Handling

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

60 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

3 products

Eyebolts

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

39 products

Hoist Rings

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

34 products

Hooks

Lift, hang, and bind loads with rope and chain

2 products

U-Bolts

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

11 products

U-Bolt Plates

Reinforce mounted U-bolts for a more secure hold

2 products

Fabricating and Machining

T-Slot Nuts

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

8 products

T-Slot Bolts

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

15 products

Setup Studs

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

17 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

1 product

C-Clamps

Temporarily secure workpieces together or to a work surface

3 products