Frantz® has been manufacturing carbon steel balls since 1947. High tech manufacturing and inspection processes enable Frantz Sterling Steel Ball division to manufacture carbon steel balls to meet precise automotive specifications on case depth, hardness, and diameter size, verified by our laboratory. Our quality processes also ensure a delivery of uniform product that is clean and free from debris that can plug up automatic feeding machines.

Our Hardened Carbon Steel Ball product offering includes the following sizes:

Fractional		Decimal		mm
3/16		0.1875		4.76
13/64		0.2031		5.16
7/32		0.2188		5.56
15/64		0.2344		5.95
1/4		0.2500		6.35
17/64		0.2656		6.75
9/32		0.2813		7.14
19/64		0.2969		7.54
5/16		0.3125		7.94
21/64		0.3281		8.33
11/32		0.3438		8.73
23/64		0.3594		9.13
3/8		0.3750		9.53
25/64		0.3906		9.92
13/32		0.4063		10.32
27/64		0.4219		10.72
7/16		0.4375		11.11
29/64		0.4531		11.51
15/32		0.4688		11.91
31/64		0.4844		12.30
1/2		0.5000		12.70
33/64		0.5156		13.10
17/32		0.5313		13.49
35/64		0.5469		13.89
9/16		0.5625		14.29

Minimum lot sizes apply. Contact our Customer Service representatives for additional size and feature options.

Hardened Carbon Steel Balls by Frantz® Sterling Steel Ball. Simply better.