TAMIYA

Tamiya 74164 Conical Diamond File

Manual tool

Conical diamond file

For openings that benefit from a changing diameter along the working surface rather than a constant 3 mm round file.

Working profile: Conical diamond file
Working grade: #200, exact manufacturer
Working-section maximum diameter: 8 mm

$26.98Nov 6, 26, 06:16 PM · New York

Price info

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PACKAGE ROLEManual tool

WORKING TASKHole shaping

Read all specifications & parts ↓

DESCRIPTION

Shape openings with a tapered working section

The 74164 is a tapered shaping tool, which makes it a useful comparison when an opening or tube needs more than a constant-diameter round profile. Tamiya specifically names shaping holes and resizing pipes, along with softer metals such as aluminum and brass. The working surface is diamond-coated with a #200 grade.

The measurements have separate jobs: 150 mm is total tool length, 55 mm is the file section, and 8 mm is its maximum working diameter. The maximum diameter does not mean every hole starts at 8 mm or that the whole tool has that diameter. A textured grip and plastic cover are part of the exact maker description.

Compare the 74107 if a 3 mm cylindrical round file is the better geometry, or the half-round 74126 when a half-round face better matches the surface. The maker also illustrates plastic plate, tube and carbon-fiber plate, but supplies no thickness or removal-rate rating. Choose by the opening’s geometry and the named material rather than assuming a drill-like cutting capacity.

MODEL DETAILS

Specifications & included parts

Details for Tamiya 74164 Conical Diamond File
Detail	Product details
Working profile	Conical diamond file
Working grade	#200, exact manufacturer
Working-section maximum diameter	8 mm
Working-section length	55 mm
Total tool length	150 mm
Grip	Textured
Storage accessory	Plastic cover, exact manufacturer
Named uses	Shaping holes and resizing pipes
Named softer metals	Aluminum and brass
Model	74164

Check the selected size, working profile and supplied parts on Amazon before ordering.

Where this model is useful

Tapered profile supplies a changing diameter along the working section.
Separate overall, working-length and maximum-diameter measurements help assess access.

Trade-offs to check

No minimum tip diameter, material-thickness or removal-rate rating is supplied.

What to check before choosing

Opening geometry

Compare taper and working-section length with the actual opening; 8 mm is the maximum working diameter, not a starting-hole requirement.

Your questions about this product

Why choose a conical file instead of the 3 mm round model?

The conical section changes diameter along its length, while 74107 is specified as a 3 mm round profile. Match the geometry needed for the opening or tube.

What should I check for a deep opening?

The tapered working section is 55 mm long within a 150 mm tool, with an 8 mm maximum diameter. Compare the opening geometry with that working section rather than using total tool length as reach.

Is it only described for plastic?

Tamiya also names softer aluminum and brass, and shows plastic plate, tube and carbon-fiber plate examples. It does not supply a universal material-thickness capacity.