BS 6366:2011 pdf download – Specification for studs for rugby football boots
1 Scope
This British Standard specifies design, dimensions, construction, performance and marking requirements for studs for use in rugby football boots.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
BS 3643-1:2007, ISO metric screw threads – Part 1: Principles and basic data BS 3643-2:2007, ISO metric screw threads – Part 2: Specification for selected limits of size ISO 6344 (all parts), Coated abrasives – Grain size analysis
3 Materials
Materials used in the studs shall be such that they do not give rise to hazards as a result of actions such as abrasion or impacts through wear or through any other form of damage or deterioration (see Clause 5).
NOTE Nylon should not be used; it has been found previously not to be a suitable material due to its propensity for burring. Materials used in the studs shall be such that the studs conform to the performance requirements in Clause 5.
4 Construction and design
4.1 General The shape and dimensions of any stud design shall be such that they present no greater risk of injury to another player than the comparator stud (see Figure 1). There shall not be a single stud at the toe of the boot. The edge profile of the sole unit itself shall be rounded with no sharp edges. When fitted to the shoe, the stud shall have no external projections on its surface except where the stud has been marked in accordance with Clause 7. In such cases, the embossment details shall be no more than 0.3 mm proud of the surrounding material of the stud. The studs and any attachment shall be capable of withstanding the mechanical demands of service in accordance with Clause 5, including impact and abrasive wear. No stud shall be greater than 21 mm in length, measured from the base of the stud to its tip. NOTE Studs might be different lengths on the forepart (shorter) and heel (longer) of a boot. All edges of studs or cleats shall be filleted with a radius of not less than 1.5 mm with a smooth finish.
4.2 Replaceable studs Replaceable studs shall be designed in such a way that they can be fitted by a method that does not damage the stud and thereby introduce a cutting hazard or any other hazard. In the case of studs incorporating a spigot or similar, the following shall apply.
a) When the attachment spigot is of a different material from the stud, a clearly visible warning mark shall become evident when the stud has worn down to a length that gives a minimum of 2 mm cover to the end of the spigot.
b) Studs shall be designed so that the fixing tool, supplied by the manufacturer, acts only through recesses or flutes on the flanks of the studs or on flats on the integral washer at the base. If the attachment spigot is made of metal, the thread shall be either M5 or M7 in accordance with BS 3643-1:2007 and BS 3643-2:2007. NOTE If the attachment spigot is not made of metal, a method of fitting other than by an M5 or M7 thread may be used. If the method of attachment is other than by the use of an attachment spigot with an M5 or M7 thread, marking shall include the information specified in Clause 7.
c) Any flutes or other recesses for the fixing tool, shall not extend nearer to the tip of the stud than the clearly visible warning mark.
4.3 Comparator stud A stud manufactured from Aluminium 6082 in accordance with the dimensions given in Figure 1 shall be used as a comparator stud that performs acceptably in the tests referred to in 5.1.1, 5.1.2 and 5.2.3.