McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	For Screw Size For Screw Size

	Material Material

Brass

Steel

	Finish Finish	Show

Zinc Plated

	Finish Finish	Hide

	Washer Type Washer Type


Flat	Split Lock

Metal Bonded	Tooth Lock

Countersunk	Square

Spring Lock	Cup for Oversized Holes

Slotted	Leveling for I- Beams

Angled Edge	Curved

Tab Lock	Square-Neck Bolt Lock

	OD OD

	ID ID

	Specifications Met Specifications Met

ASME

ASTM

DIN

ISO

SAE

USS

	Thickness Thickness

0.005" to 0.030"

0.010" to 0.016"

0.012" to 0.018"

0.014"

0.014" to 0.020"

0.015" to 0.019"

0.016" to 0.022"

0.017" to 0.021"

0.018"

0.018" to 0.023"

0.018" to 0.024"

0.02"

0.020" to 0.025"

0.020" to 0.027"

0.020" to 0.040"

0.022" to 0.028"

0.023" to 0.027"

0.023" to 0.028"

0.024"

0.025"

0.025" to 0.031"

0.025" to 0.040"

0.027" to 0.031"

0.027" to 0.035"

0.028"

0.028" to 0.034"

0.028" to 0.036"

0.030" to 0.065"

0.031"

0.031" to 0.062"

0.032" to 0.040"

0.034" to 0.044"

0.035"

0.036"

0.036" to 0.042"

0.036" to 0.044"

0.036" to 0.045"

0.036" to 0.065"

0.037" to 0.045"

0.039"

0.040"

0.040" to 0.050"

0.042" to 0.050"

0.042" to 0.051"

0.042" to 0.052"

0.042" to 0.054"

0.043"

0.043" to 0.051"

0.045" to 0.055"

0.047"

0.047" to 0.053"

0.047" to 0.055"

0.048"

0.048" to 0.052"

0.049" to 0.055"

0.050" to 0.070"

0.051" to 0.080"

0.052" to 0.058"

0.052" to 0.060"

0.054" to 0.070"

0.055"

0.055" to 0.065"

0.056"

0.056" to 0.062"

0.056" to 0.070"

0.056" to 0.071"

0.057" to 0.067"

0.058" to 0.068"

0.059" to 0.065"

0.059" to 0.067"

0.059" to 0.069"

0.060" to 0.064"

0.062"

0.063"

0.064" to 0.104"

0.071"

0.073" to 0.083"

0.074" to 0.094"

0.074" to 0.121"

0.075"

0.075" to 0.082"

0.076" to 0.080"

0.078"

0.086" to 0.132"

0.089" to 0.099"

0.090" to 0.112"

0.094"

0.095" to 0.101"

0.098"

0.098" to 0.120"

0.104" to 0.114"

0.105" to 0.135"

0.108" to 0.160"

0.109"

0.110" to 0.130"

0.110" to 0.140"

0.112" to 0.128"

0.115" to 1/8"

0.115" to 0.135"

0.120" to 0.140"

0.122" to 0.177"

1/8"

0.125" to 0.145"

0.127" to 0.141"

0.134"

0.136" to 0.192"

0.141"

0.146" to 0.162"

0.146" to 0.174"

0.153" to 0.213"

0.156"

0.163" to 0.181"

0.170" to 0.200"

0.182" to 0.202"

0.188"

0.193" to 0.248"

0.200" to 0.222"

0.210" to 0.280"

0.219"

0.219" to 0.243"

0.220" to 0.280"

0.225" to 0.265"

0.234" to 0.266"

0.235" to 0.250"

0.235" to 0.265"

0.238" to 0.263"

0.249" to 0.327"

0.360" to 0.390"

0.485" to 0.515"

0.2 to 0.4 mm

0.3 to 0.5 mm

0.4 to 0.6 mm

0.5 to 0.7 mm

0.6 to 0.8 mm

0.7 to 0.9 mm

0.8 to 1.0 mm

0.9 to 1.1 mm

0.9 to 1.2 mm

1.00 mm

1.0 to 1.4 mm

1.1 to 1.3 mm

1.1 to 1.4 mm

1.20 mm

1.2 to 1.6 mm

1.3 to 1.7 mm

1.4 to 1.8 mm

1.50 mm

1.5 to 1.7 mm

1.7 mm

1.8 to 2.2 mm

1.9 to 2.1 mm

2.0 to 2.4 mm

2.3 to 2.7 mm

2.7 to 3.3 mm

2.8 to 3.2 mm

3.00 mm

3.3 to 3.7 mm

3.4 mm

3.4 to 4.6 mm

3.7 to 4.3 mm

3.8 mm

3.8 to 4.2 mm

3.9 mm

4.0 to 6.0 mm

4.4 to 5.6 mm

4.8 to 5.2 mm

5.4 to 6.6 mm

5.8 to 6.2 mm

6.0 to 8.0 mm

7.0 to 9.0 mm

9.0 to 11.0 mm

	Hardness Hardness

	Fastener Strength Grade/Class Fastener Strength Grade/Class

Grade 8

Class 8.8

	Split Lock Washer Type Split Lock Washer Type


Standard	Curved

Wave

	Tooth Location Tooth Location

	External
	Internal
	Internal/External

	ASME Designation ASME Designation

Narrow

Wide

Regular

	Width Width

	Length Length

	Container Features Container Features

Compartmented

Lid Chart

	Minimum Temperature Minimum Temperature

-49° to 0° F

	Maximum Temperature Maximum Temperature

Less than 250° F

Not Rated

	Container Type Container Type

Plastic Box

Metal Box

	Number of Pieces Number of Pieces

	Shape Shape


Ring	Round

Rectangle

	Seal Material Seal Material

Rubber

Forward

How can we improve?

1,813 Products

Washers

Lock Washers

These washers have a locking feature to resist loosening from vibration.

Sealing Washers

Prevent fluids from leaking around fasteners.

Leveling and Wave Washers

Compensate for tolerance variations and uneven surfaces.

Other Washers

Ring Shims

Precisely align, level, and adjust spacing on fasteners and shafts with these shims.

Unthreaded Spacers

Also known as clearance spacers.

Washer Assortments

Unthreaded Inserts

These inserts reinforce joints as fasteners are tightened.

External Retaining Rings

Push Nuts

Push these nuts over threads for quick installation in light duty and low-clearance applications.

Baskets for Parts Washing Tubs

Strut Channel Fasteners

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