Grobet USA Swiss Pattern Precision 3" Screwhead File with Tang – #4 (.022")

Designed for precision filing of slots in small screws, this Grobet USA Swiss Pattern screwhead file features an extremely thin profile for controlled work where a conventional file is too thick.

The #4 size measures just .022" (.55mm) thick, making it ideal for refining, cleaning, and restoring narrow screw slots. The cutting edges are single cut for controlled material removal, while the broad sides are smooth, or safe, helping prevent unwanted filing of adjacent surfaces.

Its precision profile makes it particularly useful for watch and clock repair, jewelry work, optical repair, instrument work, and other applications involving small slotted screws and narrow openings.

Features & Benefits

• Designed for Small Screw Slots: Specialized profile provides access to narrow slots that standard files cannot reach.

• #4 Thickness: Measures just .022" (.55mm) thick for precise work on small slotted screws.

• Single-Cut Edges: Provides controlled cutting action when filing and refining narrow slots.

• Safe Sides: Broad sides are smooth and uncut, allowing the edges to perform the filing while helping protect surrounding surfaces.

• Precision Swiss Pattern: Designed for detailed bench work where accuracy and control are essential.

• Tang Design: Allows the file to be fitted with a compatible handle for improved comfort and control.

• Swiss Made: Manufactured in Switzerland for professional precision work.

Specifications

• Brand: Grobet USA

• File Type: Swiss Pattern Precision Screwhead File

• Size: #4

• File Length: 3" (75mm)

• Width: 25/64" (9.9mm)

• Thickness: .022" (.55mm)

• Cut: Single cut on edges

• Sides: Safe / uncut

• Style: With tang

• Grobet Item Number: 31.334

• SKU: 31.334

• MPN: 31-334

• Made In: Switzerland

Ideal For

• Filing slots in small screws

• Cleaning and refining damaged screw slots

• Watch and clock repair

• Jewelry making and repair

• Optical repair

• Precision instrument work

• Working with narrow slots and openings

• Detailed bench repair

Frequently Asked Questions

What is a screwhead file used for?
A screwhead file is specifically designed for filing narrow slots in small screws. Its thin profile allows it to reach slots that are too narrow for conventional files.

How thick is the #4 file?
The #4 file is .022" (.55mm) thick.

Which parts of the file actually cut?
The edges are single cut. The broad sides are safe, meaning they are smooth and do not have cutting teeth.

Why are the sides left smooth?
The safe sides allow the cutting edges to work inside a narrow slot while helping prevent unwanted material removal from adjacent surfaces.

Can it be used to restore a damaged screw slot?
Yes. It can be used for controlled filing, cleaning, and refining of compatible slotted screw heads.

Does this file have a tang?
Yes. It has a tang that can be fitted into a compatible file handle for improved grip and control.

Is the 3" measurement the overall length including the tang?
No. The manufacturer's 3" file length is measured from where the cutting teeth begin near the tang to the opposite end of the file. The tang is not included in the stated file length.

Where is this file made?
It is made in Switzerland.

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