McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Length Length

	Material Material

	Tolerance Rating Tolerance Rating

Standard

Tight

	Shape Shape


Ball	Oblong

	Hardness Rating Hardness Rating

Medium

Hard

Very Hard

	Hardness Hardness

	Elongation Elongation

	Maximum Temperature Maximum Temperature

	Specifications Met Specifications Met

AMS 5630

AMS QQ-S-763B

	Thread Size Thread Size

	Thread Type Thread Type

UNC

NPT

UNF

	Pipe Size Pipe Size

	Minimum Temperature Minimum Temperature

-30° F

35° F

Not Rated

	For Use With For Use With

Water

Oil

Hydraulic Fluid

	For Container Type For Container Type

Open Tank

Closed Tank

	Gauge Gauge

	Connection Type Connection Type

	Maximum Pressure Maximum Pressure

	Through Hole Diameter Through Hole Diameter

1/4"

3/8"

1/2"

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254 Products

Stainless Steel

Hardened Bearing-Quality
440C Stainless Steel

These balls are hardened for increased wear and abrasion resistance.

Tight-Tolerance Hardened
440C Stainless Steel

With a diameter that’s held to a close tolerance, this material is hardened for increased wear and abrasion resistance.

Impact-Resistant 440A Stainless Steel

440A stainless steel resists damage from impact and abrasion. It's often used for cutlery and valve components.

Tight-Tolerance Multipurpose
304 Stainless Steel

This material has tighter tolerances than standard 304 stainless steel.

Corrosion-Resistant
316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

Floats for Water and Oil

Floats for Threaded Rods

Connect these floats to threaded float rods.

Floats without Connections

These floats are untethered by a float rod so they can float freely in your tank.

Through-Hole Floats

The through-hole connection allows these floats to slide up and down a vertical float rod.

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