31550 · FT Locknuts, M3, blue aluminum

Drawn, from the generic size M3 lock nut (locking kind not stated). * not fixed by the spec: drawn with the usual proportions for this type.

Fits these platforms (9)

Platform	How	Source
Team Associated MT12	fitment list: direct	MT12 Monster Van RTR LiPo Combo product page
Team Associated Pro4 SC10	fitment list: direct	Pro4 SC10 General Tire RTR product page
Team Associated RC10 4WD	fitment list: direct	RC10 4WD Team Car Kit product page
Team Associated RC10 4x4 Pickup Truck	fitment list: direct	RC10 Pickup Truck Kit product page
Team Associated RC10 American Custom Semitruck	fitment list: direct	RC10 American Custom Semitruck 6x6 Metallic Kit product page
Team Associated RC10F6	in the box (1 release)
Team Associated RC10T	fitment list: direct	RC10T Factory Team Kit product page
Team Associated Rival MT10	fitment list: direct	RIVAL MT10 Brushed RTR LiPo Combo product page
Team Associated TC7	fitment list: direct	TC7.2 Factory Team Kit product page

Generic spec	Match	Standards	Source
M3 lock nut (locking kind not stated)	functional		Thread and type read from the manufacturer's description; the standard is not cited by the brand

Year	Release	Role
unknown	Team Associated RC10F6 Classic 2025 Kit	in the box

Compatibility according to the manufacturer's parts lists; see each release for the source document.