Titles:
NUTS (KU-0257450100)
Description:
The 0257450100 nut is a high‑strength fastening component used to secure bolts and studs in a wide range of Kubota assemblies. It provides firm clamping force and prevents loosening under vibration, shock, and load conditions. Kubota manufactures this nut from hardened steel, so it resists corrosion, wear, and deformation. As a result, it supports structural integrity, maintains assembly alignment, and helps ensure reliable operation across machinery systems.
This nut is typically applied in engine, chassis, suspension, undercarriage, and accessory mount applications wherever a M12 nut with the specified pitch and grade is needed. It works in conjunction with matching bolts or studs to hold components together securely.
Model Fitment:
Typical Application Families
These are machine families where this nut size and specification commonly appear in OEM parts diagrams:
Compact & Utility Tractors
- B Series: B2301, B2601, B3150, B3350
- L Series: L2501, L3301, L3901, L4701
- M Series: M4, M5, M6, M7 series tractors
Typical uses in tractors:
- Engine mounting brackets
- Chassis and frame connections
- Hydraulic component mounts
- PTO and hitch hardware
Excavators
- KX Series: KX016‑4, KX018‑4, KX027‑4
- U Series: U10‑5, U15 series, U17 series, U27‑4
Typical uses in excavators:
- Structural and armor bolts
- Side and access panel fasteners
- Undercarriage frame connections
RTV Utility Vehicles
- RTV‑X900
- RTV‑X1100
- RTV‑X1120D
- RTV‑X1140
- RTV‑XG850
Typical uses in RTVs:
- Frame bracket fasteners
- Suspension linkage bolts
- Engine and accessory mounts
Groundcare & Industrial Products
- Ride‑on mowers
- Power units
- Generators and pumps that share M12 hardware
Typical uses in industrial/groundcare:
- Guard and cover panels
- Engine accessory connections
- Structural element joints
Part Details:
- Type: Hex nut / lock nut (standard OEM style)
- Material: Hardened steel
- Function: Fastens bolts and studs to hold assemblies together
- Application: Structural, engine, transmission, chassis, and mechanical systems
- Installation: Threaded onto matching bolt or stud
- OEM Reference: 02574‑50100
This nut:
- Maintains secure clamping under stress
- Resists vibration‑induced loosening
- Protects assemblies from displacement
- Meets OEM quality and strength standards
