Material: 
Body and ball stud 230 M07 Pb leaded low carbon steel equivalent 9S Mn Pb 28K, tensile strength 430-500N/mm².
Inner retaining ring 1.12 spring steel to BS 5216.
Protective Finish:
Body and ball stud Zinc plated, de-embrittled and yellow passivated.
Inner retaining clip Self-colour. The assembly is lubricated.

FI Ball Joint:

• SAE J 490 Style 4.
• Ball stud retained by hardened and tempered steel ring resulting in high pull-out load.
• Optional polychloroprene gaiter avalible to help resist dirt ingress.
• If a fitted gaiter is required, please add G to the part number e.g. FIG 312
• FI Ball Joint is ideal for severe wear conditions and is also resistant to vibration and high shock loading.
• Metric sizes of this range are shown on Data Sheet FM.
• Subject to quantity, special threaded bodies and ball studs are avalible.