1"-8 Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Stainless Steel

Fastener Strength Grade/Class

ASTM Grade A325

Threading

Partially Threaded

Threaded on Both Ends

Threaded on One End

Finish

Cadmium Yellow-Chromate Plated

Hot-Dipped Galvanized

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Fastener Head Type

Thread Type

Thread Spacing

Thread Direction

Specifications Met

Head Width

Nut Type

Externally Threaded

With Sight Hole

Tensile Strength

Less than 10,000 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Grip Length

Thread Fit

ASME Interference Class 5

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Unified Standard Class 3B

Drive Style

External Square

Thread Length

Hex Nut Profile

Width

Head Height

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

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1,026 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

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

Square Head Screws

Square Head Screws

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

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

Hex Nuts

Handle most general fastening needs

Locknuts

Hold fasteners in place to prevent loosening from vibration

Coupling Nuts

Connect and extend threaded rods

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

Socket Nuts

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

Flange Nuts

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

Split Nuts

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

Threaded Rods

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

Single-End Studs

Single-End Studs

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

Anchors

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

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Push Nuts

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

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Fabricating and Machining

Setup Studs

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

Fixturing Kits

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

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

Clamps

Hold workpieces securely in place

Material Handling

Hoist Rings

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

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Eyebolts

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

Turnbuckles

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

Hooks

Lift, hang, and bind loads with rope and chain

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

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

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