Description
Overview:
This Square Bolt 8 x 125 LH Female is a genuine Oregon fastener designed for demanding garden and construction machinery. It features a square body with an internal left‐hand thread for secure, non-rotating seating in mating housings. Precision-machined steel provides strength and repeatable fitment. The thread specification is M8 with a 1.25 mm pitch (major diameter 8 mm / 0.31 in; pitch 1.25 mm / 0.049 in), making it suitable where a left‐hand female fixing is required. Used in assemblies that spin in a way that could loosen standard threads, it helps maintain clamping force under vibration. Supplied under OEM number 90177T, this part is a dependable replacement for routine maintenance and repairs on brushcutters, trimmers, clearing saws, and similar equipment from the Oregon ecosystem.
Key Features:
- Genuine Oregon part for assured compatibility and quality control (OEM No. 90177T)
- M8 x 1.25 left-hand female thread for applications that need reverse-thread security (8 mm / 0.31 in diameter; 1.25 mm / 0.049 in pitch)
- Square body helps prevent rotation and aids positive location in a matching recess
- Durable steel construction for long service life in high-vibration environments
- Clean, accurate threads for smooth starting and consistent torque
- Designed to maintain fastening integrity under load and frequent use
- Compact form factor suits tight assemblies and adaptors on small machines
- Easy to install with standard tools, helping reduce downtime during maintenance
- Suitable for professional and DIY users working on brushcutters, trimmers, and grounds care equipment
Typical Applications:
Used to secure or adapt cutting heads, blade carriers, and other rotating attachments on brushcutters, line trimmers, and clearing saws where a female M8 x 1.25 left‐hand thread is specified. Helpful for repairs, refurbishments, and preventative maintenance on outdoor power equipment and light-duty site machinery that require anti-loosening reverse-thread fasteners.
Also known as:
Female square bolt M8 x 1.25 LH, left‐hand female square fastener, square-thread insert (LH), M8 x 1.25 LH square coupler, reverse-thread square fixing, LH internal thread square bolt, OEM 90177T square fastener.
Product Specifications
| L&S Part No. | OR90177T |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Oregon |
| OEM No. | 90177T |
| Unit of Sale | 1 |
| Fits Brands | Oregon |
| Key Features | - M8 x 1.25 left-hand female thread for reverse-thread security - Square body prevents rotation in mating housings - Precision-machined steel ensures strength and fitment - Suitable for brushcutters, trimmers, and clearing saws - OEM number 90177T for assured compatibility |
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