1"-8 Screws | McMaster-Carr

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System of Measurement

Thread Size

Length

Threading

Partially Threaded

Threaded on Both Ends

Threaded on One End

Fastener Strength Grade/Class

ASTM Grade A325

Fastener Head Type

Material

Stainless Steel

Finish

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Head Width

Thread Spacing

Thread Type

Specifications Met

Grip Length

Tensile Strength

Less than 10,000 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Head Height

Drive Style

External Square

Spring Plunger Driver

Thread Direction

Head Diameter

Socket Head Profile

Thread Fit

ASME Interference Class 5

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Drive Size

Screw Size

DFARS Specialty Metals

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

REACH

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767 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 that won't snag on surrounding parts

Set Screws

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

Square Head Screws

Square Head Screws

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

Shoulder Screws

Shoulder Screws

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

Threaded Rods

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

Anchors

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

Single-End Studs

Single-End Studs

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

Spring Plungers

Spring Plungers

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

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Fabricating and Machining

T-Slot Bolts

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

Setup Studs

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

Fixture Kits

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

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

Material Handling

Eyebolts

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

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

Measuring and Inspecting

Transfer Punches

Transfer Punches

Mark the center of an existing hole onto a separate workpiece

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