Lock nuts have a nylon insert or deformed thread that grips the bolt, so they resist working loose under the vibration of an RC car.
Nuts
RC nuts and lock nuts in steel and aluminium, in common sizes.

Nuts M2.5 Nylon Black (10) (UR165250) Ultimate Racing
SKU: UR1652502,50 €In stock (5)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M2.5 Steel (10) (960025) Xray
SKU: 9600256,50 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Alu Nylock Flanged (5) Orange Hiro-Seiko
SKU: HS-695604,00 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Nylon Black (10) (UR165300) Ultimate Racing
SKU: UR1653002,50 €In stock (4)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Nylon Blue FT (6) – Team Associated 31550
SKU: AE3155014,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Nylon Flanged Black (10) – Team Associated 25612
SKU: AE256125,90 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Nylon Flanged Black (5) (69241) Hiro Seiko
SKU: HS-692414,00 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Nylon Flanged Blue FT (10) – Team Associated 25612
SKU: AE2539216,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M3 Steel Black (6) – Team Associated 91477
SKU: AE914773,90 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M4 Nylock (10) – Black – Team Associated 89216
SKU: AE892163,90 €In stock (2)Delivery within Estonia 2-3 working days, other European countries 10 days.
Nuts M4 Nylon Flaged (4) (960140) Xray
SKU: 9601409,50 €On backorderDelivery within Estonia 2-3 working days, other European countries 10 days.
Team Associated FT Blue 4mm Locknut
SKU: AE2539117,99 €In stock (1)Delivery within Estonia 2-3 working days, other European countries 10 days.
Frequent Questions & Answers
What are lock nuts for?
What size RC nuts do I need?
Match the nut thread to your screws, commonly M3 or M4. Check your car’s manual for the sizes it uses.
Steel or aluminium nuts?
Steel is strong for high-load spots. Aluminium is lighter and colourful for low-stress areas, but softer, so keep it off critical joints.












