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Home / Hardware / Washers /Washer A3235-028-193 Tinnerman
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Washer A3235-028-193 Tinnerman

39 Reviews 3 Answered Questions
Packaged Items
SinglePack of 50
Price Includes GST
Quantity
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MFG No.PNScrew SizeI.D.
(in.)		O.D.
(in.)		Approx.
Thickness		Price per
100
A3235-028-19304-0203610.196.750.035"$37.40

Overview

Washers for use with 100° flat-head screws such as MS24693 and MS24694 machine screws and NAS548 sheet metal screws to provide reinforced, low-profile attachments. Made of spring steel, Zinc plated.
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Reviews

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Works great, if you have an older plane, these are essential.

Gp A Verified Purchase

Washer A3235-028-193 Tinnerman (Pack Of 50)
August 27, 2025

As described. Just what I needed. Received quickly

Mark D Verified Purchase

Washer A3235-028-193 Tinnerman (Pack Of 50)
August 4, 2025

The washer had ridges where the punch did not shear cleanly, Not a big problem.

Thomas D Verified Purchase

Washer A3235-028-193 Tinnerman (Pack Of 50)
June 27, 2025

Excellent if the plastic with the fiberglass Vibrated to make the whole little larger this helps the problem

Michael W Verified Purchase

Washer A3235-028-193 Tinnerman
June 13, 2025

Gregory J Verified Purchase

Washer A3235-028-193 Tinnerman
March 15, 2025

Thank you for the great product that arrived in good time. Look forward to purchasing again in the near future.

Peter J Verified Purchase

Washer A3235-028-193 Tinnerman (Pack Of 50)
February 17, 2025

Steve G Verified Purchase

Washer A3235-028-193 Tinnerman
February 12, 2025

Richard D Verified Purchase

Washer A3235-028-193 Tinnerman
October 12, 2024

I use the 1.25 inch diameter cone shaped washers to fasten rigid cement board to substrate plywood and substrate rigid insulation board, so fasteners be flush-mounted to the finished surface. The 0.75 inch diameter washers are too small for this purpose. May i suggest to restore the availability of the 1.25 inch diameter units.

Ed M Verified Purchase

Washer A3235-028-193 Tinnerman
October 11, 2024

Works well in securing trim panels on sliding door on our RV.

Charles C Verified Purchase

Washer A3235-028-193 Tinnerman (Pack Of 50)
August 14, 2024

Q&A

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Please note, Aircraft Spruce Australia's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Australia assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the material thickness of these countersunk washers?

Approximate material thicknesses: #6 = 0.016", #8 = 0.024", #10 = 0.035", 1/4 = 0.035".

Q: Are these Tinnerman countersunk washers silver in color or yellow?

These washers are silver.

Q: What size countersink tool should be used?

For this particular part number you would want a .140-.147" hole, a #28 or #27 drill would work.

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