The YNF01429 Spline Bolt is a heavy-duty fastener designed for construction machinery, hydraulic systems, and industrial equipment. Featuring an 18mm spline head, M18 thread, and internal hex drive, this bolt provides excellent torque transmission, strong clamping force, and long-lasting durability under high-load and high-vibration environments.

• 18mm spline head with internal hex for greater torque application

• Thread specification: M18 (standard pitch)

• Available lengths: 49mm / 68mm

• Manufactured from high-strength alloy steel

• Resistant to shear, vibration, impact, and mechanical fatigue

• Precision-machined for accurate fit and stable fastening

• Suitable for hydraulic components, machinery joints, structural frames, and powertrain assemblies

• Direct OEM-compatible replacement bolt

• Excavators and construction machinery

• Hydraulic system mounting and cylinder joints

• Industrial machinery and powertrain equipment

• Heavy-duty mechanical fastening points

• Ideal for equipment maintenance and assembly

• Size and thread confirmation before shipping

• Technical assistance for installation or replacement

• OEM reference matching

• Custom bolts and special fasteners available upon request

• Individually packed to prevent scratches and corrosion

• Export-grade cartons for secure transportation

• Neutral or YNF-branded packaging optional

• Supports mixed shipments with other parts

Q1: Can this bolt replace OEM fasteners directly?
A: Yes. It is designed as an OEM-equivalent replacement. Provide photos or part numbers for confirmation.

Q2: What is the material grade?
A: High-strength alloy steel suitable for heavy-duty mechanical applications.

Q3: Can I order different lengths in one batch?
A: Yes, mixed lengths (49mm & 68mm) are supported.