ASTM Standard Washers | McMaster-Carr

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System of Measurement

Screw Size

ID

Material

841 Bearing Bronze

Grade 2 Titanium

Stainless Steel

OD

Thickness

0.005" to 0.006"

0.010" to 0.020"

0.013" to 0.027"

0.018" to 0.032"

Washer Type

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Finish

Chlorine Treated

Zinc Flake Coated

Length

Width

Shaft Diameter

Hardness

Color

Shape

Cross Section Shape

Performance

Chemical Resistant

Corrosion Resistant

Electrically Insulating

Finish-Your-Own

Flame Retardant

High Temperature

Impact Resistant

Low Temperature

Metal Detectable

Moisture Resistant

Application

Thread Size

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Maximum Temperature

100° F to 249° F

250° F to 499° F

500° F to 999° F

Export Control Classification Number (ECCN)

Dash Number

How can we improve?

15,717 Products

Fastening and Joining

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Spacers

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

Hex Head Screws

Hex Head Screws

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Retaining Rings

Retaining Rings

Hold components on a shaft

Sealing

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

11,357 products

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Raw Materials

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

Power Transmission

Thrust Bearings

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

Fluid Handling

Strainers

Install next to valves and pumps to catch debris in your line

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