Flat Springs | McMaster-Carr

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Spring Type

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ID

Shaft Diameter

OD

Thickness

Material

Phosphor Bronze

Polyurethane Rubber

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Hole Diameter

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Length

Working Load

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 2,999 lb.

3,000 lb. to 9,999 lb.

10,000 lb. or greater

Compressed Height @ Working Load

Screw Size

Disc Spring Type

Washer Type

Deflection @ Working Load

Less than 0.125"

0.125" to 0.249"

0.25" to 0.499"

1 mm to 1.99 mm

2 mm to 4.99 mm

5 mm to 9.99 mm

10 mm or greater

Load

Less than 1 lb.

1 lb. to 4.99 lb.

5 lb. to 9.99 lb.

10 lb. to 24.99 lb.

25 lb. or greater

RoHS

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Finish

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Overall Height

Extended Length

Flat Load

Less than 1,000 lbf

1,000 lbf to 1,999 lbf

2,000 lbf to 9,999 lbf

10,000 lbf to 19,999 lbf

20,000 lbf or greater

How can we improve?

2,389 Products

Power Transmission

Disc Springs

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

Linear Wave Springs

Linear Wave Springs

Absorb vibration and fill in gaps along the length of an object

Strip Springs

Wrap around a shaft and extend to pull objects in a linear direction

Rotor Springs

Wind to store power, then release to create rotary motion—similar to winding a wristwatch

Constant-Force Retractors

Constant-Force Retractors

Attach an object and the spring controls tension as the object is slowly pulled out and back

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Fastening and Joining

Lock Washers

Resist vibration to prevent fasteners from loosening

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