Description
Overview:
This is a Genuine Husqvarna left‐hand hex head cap screw (HHCS) built for heavy‐duty use on construction and garden machinery. It is a Grade 8 high‐tensile fastener with a coarse 5/8‐11 left‐hand thread (0.625 in diameter ≈ 15.9 mm; 11 TPI ≈ 2.31 mm pitch) and a 3.5 in length (≈ 89 mm). The robust specification provides a high clamping force and dependable resistance to vibration, helping protect assemblies from loosening under load. Commonly used on Husqvarna floor saws and similar equipment, it suits applications where reverse threading is required, such as rotating components and drive systems. Designed for precise fit and performance on selected machines including the FS4800 and FS6600, it helps maintain structural integrity and reliable operation during demanding work.
Key Features:
- Genuine Husqvarna OEM fastener for assured compatibility and fit
- Left‐hand 5/8‐11 coarse thread (0.625 in ≈ 15.9 mm; 11 TPI ≈ 2.31 mm pitch) for reverse‐thread applications
- 3.5 in length (≈ 89 mm) for correct thread engagement and clamping depth
- Grade 8 high‐tensile steel for high strength and long service life
- Stable under vibration and shock loads, helping prevent self‐loosening
- Precise thread and hex form for consistent torque application with standard tools
- Suitable for maintenance and repairs on heavy‐duty cutting and sawing equipment
- Supports reliable alignment of frames, guards, mounts, and rotating assemblies
Typical Applications:
Used on floor saws and similar equipment where a left‐hand thread resists loosening under rotation, vibration, and heavy load. Typical tasks include securing hubs, pulleys, blade guards, engine or frame mounts, and drive components on Husqvarna FS‐series machines during maintenance or repair.
Also known as:
Left‐hand hex head cap screw, LH hex bolt, reverse‐thread hex bolt, Grade 8 LH bolt, 5/8‐11 LH fastener, heavy‐duty left‐hand screw for rotating assemblies.
Fits Models:
FS4800, FS6600, FS6600 D, FS6600D, FS8400
Alternate Part Numbers:
542 16 34-88, 542163488
