1"-8 Screws | McMaster-Carr

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System of Measurement

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Threading

Threaded on Both Ends

Threaded on One End

Fastener Strength Grade/Class

Material

Fastener Head Type

Finish

Hot-Dipped Galvanized

Zinc Yellow-Chromate Plated

Head Width

Thread Spacing

Thread Type

Specifications Met

Tensile Strength

30,000 psi to 99,999 psi

100,000 psi or greater

Drive Style

Spring Plunger Driver

Grip Length

Head Height

Thread Fit

ASME Interference Class 5

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Thread Direction

Head Diameter

Socket Head Profile

Drive Size

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

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

Yes

RoHS

Compliant

Compliant with Exemptions

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REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

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802 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

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

Square Head Screws

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

10 products

Shoulder Screws

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

16 products

Threaded Rods

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

186 products

Single-End Studs

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

7 products

Anchors

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

53 products

Spring Plungers

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

23 products

Thread Adapters

Join threads of a different type, size, and gender

21 products

Fabricating and Machining

Setup Studs

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

17 products

T-Slot Bolts

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

15 products

Fixture Kits

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

1 product

Material Handling

Eyebolts

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

39 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

3 products

Power Transmission

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

Measuring and Inspecting

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

1 product