Genuine STIHL OEM Tommy Screw Thumb Knob for FS & KM Series | Part 4140 790 7501

100% Genuine STIHL Precision: Quick, Tool-Less Handle Adjustments

When your equipment works as hard as you do, aftermarket parts just don't cut it. Get your equipment back to factory performance instantly with this Genuine STIHL OEM Tommy Screw Thumb Knob. Designed specifically for a wide range of STIHL trimmers, brushcutters, and Kombi tools, this authentic part ensures a perfect fit, maximum durability, and a secure grip every single time.

This screw allows you to easily adjust or secure your bike handle or loop handle without needing any extra tools, making field adjustments faster and easier.

Product Specifications:

Brand: Genuine STIHL (OEM)

Part Type: Tommy Screw / Handle Thumb Knob

STIHL Part Number: 4140 790 7501 (4140-790-7501)

Design: Ergonomic grip made from STIHL's proprietary high-impact polymer.

Broad OEM Compatibility: Engineered to be the exact replacement for a variety of STIHL models, including:

Trimmers & Brushcutters: FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 80, FS 80 R, FS 85, FS 85 R

KombiMotors (KM Series): KM 55, KM 55 C, KM 55 R, KM 55 RC, KM 90, KM 90 R, KM 130, KM 130 R

(Also fits many other FS, FC, HL, and HT series tools equipped with adjustable handles).

Why Choose Genuine STIHL Parts?

Guaranteed Fit: No more struggling with poorly threaded aftermarket screws.

Maximum Durability: Authentic STIHL parts are built to withstand heavy vibrations, UV rays, and the toughest landscaping conditions.

Peace of Mind: Keep your commercial equipment running exactly as the manufacturer intended.

Pro Tip: Please verify your equipment's model and original part number (4140 790 7501) before purchasing to ensure perfect compatibility.