1 1/4" Screw Size Washers | McMaster-Carr

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System of Measurement

Screw Size

Material

Stainless Steel

ID

OD

Thickness

0.018" to 0.023"

0.028" to 0.034"

0.028" to 0.036"

0.048" to 0.054"

0.054" to 0.070"

0.057" to 0.067"

0.059" to 0.067"

0.059" to 0.069"

0.082" to 0.098"

0.090" to 0.160"

0.102" to 0.137"

0.105" to 0.145"

0.110" to 0.140"

0.112" to 0.128"

0.112" to 0.13"

0.112" to 0.138"

0.115" to 0.135"

Washer Type

Finish

Corrosion-Resistant Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Washer Designation

General Purpose

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Electrically Insulating

High Temperature

Impact Resistant

Moisture Resistant

Tension Indicating

Hardness

Specifications Met

Length

Color

Width

Fastener Strength Rating

DFARS Specialty Metals

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

REACH

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

ASME Designation

Shape

Application

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

How can we improve?

140 Products

Washers

General Purpose Washers

General Purpose Washers

Your go-to metal washer for every screw size

SAE Washers

Meet SAE sizing standards and typically have smaller diameters than USS washers

Oversized Washers

Oversized Washers

Exaggerated diameters or thicknesses to cover large holes or to create gaps

Structural Washers

Structural Washers

Distribute pressure under structural screws and nuts in columns, joists, and I-beams

Mil. Spec. Washers

Mil. Spec. Washers

Adhere to U.S. military standards for material and construction

Plastic Washers

Plastic Washers

Lightweight, nonconductive, and naturally rust resistant

ASME Washers

Meet ASME standards and come in regular, narrow, and wide diameters

USS Washers

Meet USS sizing standards and typically have larger diameters than SAE washers

Square Washers

Won't rotate as you fasten screws in slots and channels

Hard Fiber Washers

Hard Fiber Washers

Least likely to scratch delicate mounting surfaces

Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

Change color when you apply the correct tension to prevent overtightening

Beveled Washers

Beveled Washers

The thickest washers we offer, designed for heavy duty wood construction

Clipped Washers

Clipped Washers

Clipped on one side to fit in tight spots

Fiberglass Washers

Fiberglass Washers

Best strength-to-weight ratio of all our nonmetal washers

Other Products

Lock Washers

Resist vibration to prevent fasteners from loosening

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Vibration-Damping Mounts

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

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