Scope

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take

precedence.

1.1 Purpose/Material Description. This specification defines the material and performance test procedures for the

non-metallic locking element used on threaded fasteners. The material consists of polyamide-1 1 , with up to 25%

inert filler such as silica and limestone.

1.2 Symbols. Not applicable.

1.3 Applicability. This specification applies only to preapplied non-metallic locking elements used on internally and

externally threaded fasteners. For chemical locking preapplied thread adhesives, refer to GMW1 4657.

1.4 Remarks.

1.4.1 Use of this material may affect the torque-tension relationship. It is recommended that a torque-tension study

of the fastener joint be performed before releasing this finish on any new application.

1.4.2 The thread class of the fastener will affect the prevailing torque results. A thread class smaller than -6h (e.g.,

-6g) is recommended for optimum fit.