Spacer/Shim (Feeler Gauge)

What is spacers/shim(Feeler Gauge)

TDC’s Shims, Spacers, Whashers

TDC’s Shims, Spacers, Whashers/Why TDC’s Spacer?

  • Precision
    TDC supplies shims with tolerance of thickness ±0.5μm or ±1μm in compliance with the customers’ requirements.
  • Low Cost
    TDC provide a shim from one piece as par the below price list.
  • Prompt Delivery
    TDC standard type shims can be shipped on the day of your order if stocks are available.
  • Convenience
    We also accept materials and shapes different from TDC standard shim on request.

TDC’s super precision shims, spacers, washers without dispersion in thickness lead to high assembly precision and realize the reproducibility and reliability of assembly.

They reduce looseness even after long-term use.

We provide shims for M2 to M8 as TDC standard shim. (Please refer to the price list below)

You can purchase from one piece at

Processing Achievement

Price List (TDC Standard Shim) ※ Please refer to the above drawing about each size.

Type Size a(mm) Size b(mm) ±1um (Japanese Yen)
※Excluding Tax
±0.5um (Japanese Yen)
※Excluding Tax
For M2, M3 3.3 6.5 400/PCE 600/PCE
For M4  4.5 8 460 /PCE 690/PCE
For M5 5.5 10 550/PCE 830/PCE
For M6 6.5 12 650/PCE 980/PCE
For M8 8.5 16 850/PCE 1,280/PCE

TDC can provide not only TDC standard shim as per the above drawing but also shims in any other shapes, size and quantity on request.
Please contact our sales staff for quotation.

Thickness Size t(um)


※TDC provide a shim from one piece.
※The prices do not include any transportation charge.
※The price do not include any tax.

TDC can provide not only TDC standard shim as per the above drawing but also shims in any other shapes, size and quantity on request.
Please contact our sales staff for quotation.

TDC Super Precision Shim

Material SUS304
Thickness Tolerance ±1μm(0.001mm)
Measurement Equipment Mitutoyo Laser Hologage

Precise adjustment is available for assembling of precision equipment, mold and jig.
TDC can provide not only TDC standard shim as per the below drawing but also any other shapes like washer or square.

TDC can provide not only TDC standard shim but also shims in any other shapes and sizes on request.
Please feel free to contact us.

Mirror Fit Spacer

TDC developed a “Mirror fit spacer” with mirror polished surface, not affecting the volume of variation in assembling equipment, contributing to the stability of dimensions.

Surface Roughness Ra 1nm
Surface Roughness Ra 80nm
Feel free to contact us for any inquires.

What is spacer?

A spacer is an instrument used to create a space between parts. It is an indispensable part for the manufacturing industry, such as eliminating rattling in precision equipment assemblies and making high-precision fine adjustments.

Select materials such as metal and resin according to the purpose such as insulation, heat resistance, and wear resistance.

Familiar examples of use include battery spacers that can be resized from AAA batteries to AA batteries, and beads for pendant head charms.

There are also many types. In the manufacturing industry, there are “screw spacers” that function as both screws and spacers, and cylindrical “pipe spacers” that have no internal threads. Also, “shim spacers” are often used to help fine-tune the height of machines and the spacing between parts.

What is shim?

Shim means a small object or piece of material used between two parts of something to make them fit together, or to prevent them rubbing against each other. It generally refers to a thin piece of 1.0 um.

No matter how accurate the assembly is, the mounting surface of the parts may not be surface-cut, or the dimensions may be out of order due to the effects of cumulative tolerances, so delicate adjustments may be required. By adjusting the tilt and position of the parts assembled in this way, it is used for precision adjustment to finish with higher precision.

Generally, stainless steel with excellent corrosion resistance, high-strength iron, and easy-to-process brass are used as materials.

Regarding the shape, there are highly versatile “shim plate” and highly reproducible “shim ring”, and the thickness can be adjustable according to customer’s needs.

TDC is the best for Spacer/Shim (Feeler Gauge)

TDC Co., Ltd. can deliver according to the desired delivery date, and has accumulated unique technological development and know-how in processing, and can handle many kinds of shapes.

Please feel free to contact us for any concerns and inquiries regarding spacers / shims (feeler gauges).

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Feel free to contact us for any inquires.

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