HARDEN Go-Through Slotted Screwdriver | Hammer-Through Flathead | CR-V Steel | Models: 550309 / 550312

The HARDEN Go-Through Slotted Screwdriver Series (Models 550309 & 550312) is designed for heavy-duty fastening and loosening tasks where extra impact force is required. Featuring a go-through steel shaft with reinforced striking cap, this hammer-through screwdriver allows direct hammering without damaging the handle. Made from tempered CR-V steel and equipped with a magnetic flat tip, it delivers outstanding strength, durability, and precision for professional use.

🔹 Specifications

Brand: HARDEN

Type: Go-Through / Hammering Slotted (Flathead) Screwdriver

Models: 550309 / 550312

Available Sizes:

1. 550309: 6 × 150mm
2. 550312: 8 × 200mm

Tip Type: Slotted (Flat)

Blade Material: CR-V (Chrome Vanadium) Steel

Heat Treatment: Tempered

Tip Feature: Magnetic

Handle Material: TPR (Thermoplastic Rubber)

Handle Design: Ergonomic, anti-slip

Striking Feature: Reinforced knocking / hammer-through cap

🔹 Features

1. Go-Through Steel Shaft – transfers hammer impact directly to the tip for maximum torque.
2. Hammer-Ready Reinforced Cap – safe for striking without handle damage.
3. CR-V Steel Construction – high strength, wear-resistant, and long service life.
4. Tempered Blade – improves toughness for stubborn or rusted fasteners.
5. Magnetic Flat Tip – holds screws securely and prevents slipping.
6. Ergonomic TPR Handle – comfortable grip with excellent control during heavy use.
7. Professional-Grade Tool – built for demanding industrial and maintenance environments.

🔹 Applications

Ideal for:

✔ Loosening rusted or seized screws

✔ Mechanical & industrial maintenance

✔ Automotive repair

✔ Heavy equipment servicing

✔ Construction and workshop use

✔ High-torque fastening jobs

🏷️ Product Tags

Go Through Screwdriver, Hammer Screwdriver, Slotted Screwdriver, Flathead Screwdriver, CRV Screwdriver, Impact Screwdriver, Harden Hand Tools

#Tags

#Harden #GoThroughScrewdriver #HammerScrewdriver #FlatScrewdriver #CRVTools #ProfessionalHandTools #WorkshopTools #HardenToolsBD