Studs for articles of footwear

A method of making a stud for an article of footwear comprising a first moulding step of forming an attachment portion comprising an externally screw-threaded spigot for engagement with a complementary screw-threaded socket in securement of the stud to an article of footwear and a second moulding step of forming a ground-engaging boss moulded on to the attachment portion, the attachment portion being moulded of a relatively hard and inflexible plastics material and being formed to present means for engagement by a tool for assisting in screwing the stud spigot tightly into a socket and the boss being moulded of a material that is more flexible and resilient, the attachment portion being formed to comprise a collar bounding a chamber from within which a central stiffening support projects axially beyond the collar in the direction away from the spigot, the spigot being formed with an axially-extending passage which opens out into said chamber and the boss-forming material in the second moulding step being caused to envelop the central support and fill said chamber and form a plug within the passage in the spigot to interlock the boss moulding with the attachment portion.