I cant see how they comply ( hopefully link will work )
When you eventually scroll down to the picture of a stud .
Read the page above it .as printed next
Materials used in the studs/cleats should be such that they do not
give rise to hazards as a result of mechanisms such as abrasion or
impacts in wear; or through any other form of damage or
deterioration. Materials used in replaceable studs/cleats should be
capable of repeated fixing and removal without creating a hazard.
Nylon has been found previously not to be a suitable material due to
its propensity to burring.
Stud/cleat length shall be no greater than 21 mm (see Law 4).
Studs/cleats complying with the design and dimensions shown in
Figure 1 should give satisfactory performance.
The shape and dimensions of other stud/cleat designs should be
such that they present a no greater risk of injury to another player
than the stud/cleat shown in figure 1. Tests A and B can be used to
assess comparative performance.
The plan view cross-sectional contact area of the stud/cleat shown in
Figure 1 at a plane 2 mm below the tip is 78 mm2
. Other studs/cleats
having the same or greater contact area might be expected to give
satisfactory performance dependent on minimum stud/cleat width in
All edges of the studs/cleats should be finished smooth and rounded
to a radius of not less than 1mm.
The edge profile of the sole unit itself should be rounded with no
The studs/cleats should have no external projections on its surface
except where text or a logo is desired. In such cases, the
embossment details shall be no more than 0.3 mm proud of the
surrounding material of the stud.
The studs/cleats and their attachment should be capable of
withstanding mechanical demands of service, including impacts and
abrasive wear, without becoming damaged and creating a potential
hazard. Performance can be assessed by means of tests C, D and E.
In the case of studs/cleats incorporating a spigot or similar, it is
(a) when the attachment spigot is of a different material from the
stud/cleat, a clearly visible warning should become evident when the
stud/cleat has worn down to a length that gives a minimum of 2 mm
cover to the end of the spigot.
(b) Any flutes or other recesses for the fixing tool, should not extend
nearer to the tip of the stud/cleat than the clearly visible warning
Replaceable studs/cleats should be designed in such a way that they
can be fitted by a method that does not damage the stud/cleat and
thereby introduce a cutting hazard or any other hazard.
To me it basically says studs have to conform to diameters & picture of actuall stud .
And studs that dont meet this minimum standard , simply dont comply ..
Ive never seen them ,,i wouldnt allow them .
Can somebody show whete world rugby have approved same .
When the ski masks ( i mean rugby goggles ) got approval ,,we were all sent clarification about same .
I dont recall been given clarification about these studs ..