Durable 16mm spline bolt with internal hex, designed for excavators and heavy machinery requiring secure high-load fastening.
High-strength 16mm spline bolt with M16-50/65 thread length
Internal hex design ensures secure tightening in limited spaces
2.0 pitch thread for stable locking and vibration resistance
Heat-treated alloy steel for maximum strength and durability
Suitable for excavators, hydraulic systems, and mechanical assemblies
The YNF01428 spline bolt is a high-strength fastening component widely used in excavators, hydraulic systems, and construction machinery. Featuring a 16mm diameter, M16 thread, and internal hex design, this bolt offers strong locking performance even in tight installation areas. Available in 50mm and 65mm length options, it meets the needs of various assembly requirements.
Manufactured from heat-treated alloy steel, the bolt provides exceptional tensile strength, shear resistance, and long-term durability under heavy vibration and high-load operation. Its 2.0 pitch ensures stable connection and prevents loosening during continuous machine movement.
This spline bolt is frequently used for attachment mounting, hydraulic component installation, swing motor covers, gearbox assemblies, and other structural connection points. YNF Machinery supplies consistent quality with competitive pricing, making it ideal for B2B buyers, repair workshops, and equipment distributors.
| Parameter | Details |
|---|---|
| YNF Part Number | YNF01428 |
| Product Type | Spline Bolt / Spline Screw |
| Diameter | 16mm |
| Thread Size | M16 |
| Length Options | 50mm / 65mm |
| Thread Pitch | 2.0 |
| Drive Type | Internal Hex |
| Material | Alloy Steel / Heat-treated |
| Application | Excavators, hydraulic systems, machinery parts |
| Usage | Fastening, structural connection, mounting |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Piece |
| Shipping | Sea, Air, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application Area | Description |
|---|---|
| Excavator Structural Mounting | Used for bucket links, covers, frames |
| Hydraulic Component Installation | Suitable for valves, pumps, motor flanges |
| Mechanical Equipment Fastening | Provides stable threading for industrial machinery |
| Repair & Replacement Parts | Ideal for maintenance workshops |
| Aftermarket Component Distribution | Suitable for parts resellers and wholesalers |
Related Products:
High-Strength Hex Bolts M16
Excavator Mounting Bolts & Fasteners
Spline Screws for Hydraulic Assemblies
Wear-Resistant Alloy Steel Bolts
FAQs：
Q: What does M16-50(65) mean?
A: It refers to two available lengths—50mm and 65mm.
Q: Is this bolt suitable for excavators?
A: Yes, it is commonly used in excavator structural and hydraulic assemblies.
Q: What material is used?
A: Heat-treated alloy steel for high strength and durability.
Q: MOQ?
A: MOQ = 1 piece.
The YNF01428 16mm spline bolt offers reliable strength and vibration-resistant fastening for excavators and heavy machinery. Its precision-machined threads and durable alloy construction ensure stable performance under high load and harsh jobsite environments. YNF Machinery provides consistent quality, competitive B2B pricing, and fast global delivery—ideal for repair centers, equipment fleets, and aftermarket suppliers. Contact us today for pricing and availability.
