BC Precision Archive

Standard Diameter: 1/2″ / .50 Inches

Metric Diameter: 12.7mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .2952 Ounces / 8.369 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

Standard Diameter: .3543 Inches

Metric Diameter: 9mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .1048 Ounces / 2.97 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

• Standard Diameter: 1″ / 1.00 Inches
• Metric Diameter: 25.4mm
• Grade: 500
• Material: AISI 1015 Carbon Steel
• Ball Weight (each): 2.3617 Ounces / 66.953 Grams

Carbon steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications. AISI 1015 is a low-carbon steel that offers superior workability and machinability. A versatile engineering and machinery alloy, AISI 1015 is used normalized, hot-rolled, cold-worked or annealed.

Standard Diameter: 2″ / 2.00 Inches

Metric Diameter: 50.8mm

Grade: 100

Material: 440 Stainless Steel

Ball Weight (each): 1.185 Pounds / .5375 Kilograms

440 stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications with the added benefit of corrosion resistance. 440 stainless steel is a high carbon martensitic stainless steel which has high strength, good hardness and wear resistance. This type of stainless is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Unlike some stainless steel, this 400 series metal has a composition which allows it to be attracted to a magnet.

• Standard Diameter: 1″ / 1.00 Inches
• Metric Diameter: 25.4mm
• Grade: 25
• Material: 440 Stainless Steel
• Ball Weight (each): 2.3617 Ounces / 66.953 Grams

440 stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications with the added benefit of corrosion resistance. 440 stainless steel is a high carbon martensitic stainless steel which has high strength, good hardness and wear resistance. This type of stainless is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Unlike some stainless steel, this 400 series metal has a composition which allows it to be attracted to a magnet.

Standard Diameter: 1/16″ / .0625 Inches

Metric Diameter: 1.5875mm

Grade: 5

Material: 440 Stainless Steel

Ball Weight (each): .000576729 Ounces / 0.01635 Grams

440 stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications with the added benefit of corrosion resistance. 440 stainless steel is a high carbon martensitic stainless steel which has high strength, good hardness and wear resistance. This type of stainless is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Unlike some stainless steel, this 400 series metal has a composition which allows it to be attracted to a magnet.

Standard Diameter: 5/16″ / .3125 Inches

Metric Diameter: 7.9375mm

Grade: 25

Material: 440 Stainless Steel

Ball Weight (each): .072065 Ounces / 2.043 Grams

440 stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications with the added benefit of corrosion resistance. 440 stainless steel is a high carbon martensitic stainless steel which has high strength, good hardness and wear resistance. This type of stainless is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Unlike some stainless steel, this 400 series metal has a composition which allows it to be attracted to a magnet.

Standard Diameter: 3/8″ / .375 Inches

Metric Diameter: 9.525mm

Grade: 1

Material: Delrin Plastic

Ball Weight (each): .02187 Ounces / 0.62 Grams

Delrin (Polyoxy-Methylene), also known as Acetal, Polyacetal, and POM, is an engineering thermoplastic commonly used for precision parts that require high strength, hardness and rigidity. It is a tough material with a low coefficient of friction and high abrasion resistance. It has good electrical and dielectric properties, low water absorption and is FDA approved. Naturally white in color it does accept opaque colors well and can be polished to a shine. Delrin is typically difficult to bond but can be bonded with epoxies, polyurethanes and cyanoacrylates (superglue). It has good chemical resistance but is sensitive to mineral acids, chlorine, and alkaline degradation. Common uses include; pump parts, valve bodies, and bearings.

Standard Diameter: 7/32″ / .21875 Inches

Metric Diameter: 5.5562mm

Grade: 25

Material: 440 Stainless Steel

Ball Weight (each): .02472 Ounces / 0.7008 Grams

440 stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications with the added benefit of corrosion resistance. 440 stainless steel is a high carbon martensitic stainless steel which has high strength, good hardness and wear resistance. This type of stainless is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Unlike some stainless steel, this 400 series metal has a composition which allows it to be attracted to a magnet.

Standard Diameter: 1/4″ / .25 Inches

Metric Diameter: 6.35mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .036897 Ounces / 1.046 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.