Title:
BOLT (KU-0113351020)
Description:
The 01133-51020 bolt is a high-strength M10 × 1.25 × 20 mm sems bolt used across Kubota machinery, while also providing reliable fastening in structural, hydraulic, and mechanical assemblies. As a sems-style bolt, it typically includes an integrated washer; therefore, it improves load distribution and helps prevent loosening under vibration.
Moreover, Kubota manufactures this bolt from durable, high-grade steel, so it withstands repeated stress, torque, and environmental exposure. In addition, its precision thread design ensures proper engagement, which allows for secure installation and consistent clamping force. As a result, it supports long-term reliability across a wide range of equipment applications.
Model Fitment:
Primary OEM Fitment (Wide Application Hardware)
This bolt is a multi-application OEM fastener, used across hundreds of Kubota machines depending on assembly location
Mini Excavators (Confirmed Usage)
- K008-3 / K008-5
- KX016-4
- KX018-4
- KX019-4
- KX033-4
- KX040-4 / KX040-5
- KX057-4 / KX057-5
- KX080-4 / KX080-5
- KX101-3 (and variants)
- KX36-3 / KX41-3 / KX61-3 / KX71-3
U Series Excavators
- U10-3 / U10-5
- U17 / U17-5
- U25S
- U27-4
- U30-5
- U35-4
- U48-4 / U48-5
- U55 / U55-4 / U55-5
Compact & Utility Tractors
- B Series (e.g. B2301, B2320, B2150)
- BX Series
- L Series tractors
Common uses include:
- Bonnet/hood supports
- Steps and chassis mounts
- Hydraulic loader pipe assemblies
Additional Equipment
- Backhoe attachments
- Front loaders and hydraulic kits
- Tillers and rotary implements
- Generators and turf equipment
This bolt appears in multiple assemblies such as hydraulic systems, covers, and structural brackets.
Part Details:
- Type: Sems bolt (bolt with captive washer)
- Thread Size: M10 × 1.25
- Length: 20 mm
- Material: High-strength steel
- Function: Secures components and distributes clamping load
- Application: Structural, hydraulic, and panel assemblies
- OEM Reference: 01133-51020
- Replaces: 01130-51020
This bolt:
- Maintains strong clamping force
- Resists vibration loosening
- Improves load distribution via integrated washer
- Ensures reliable fastening in demanding conditions
