Bolts, Nuts, Washers, Pins & Rivets
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Every product page carries the standard it is built to, the catalogue group it belongs to, and the documents that go with it. Use the dimension table below to confirm sizes and tolerances, and the buttons to download the full PDF table or the CAD file for your drawing. If your application needs a size or a finish outside the table, our engineering team will review the drawing with you.
![Preferred Sizes of Type A Plain Washers [Table 1A] (ASTM A325 / ANSI 1060) — ANSI Plain Washers, Indasco product W-03-0004](https://indasco.com/wp-content/uploads/2026/09/W-03-0004-Th.jpg)
Plain washers are flat discs with a central hole, used to distribute load and protect surfaces during bolt or screw tightening. They also help...
"This table provides a clear overview of the technical specifications for different product sizes. The listed dimensions include minimum and maximum values defined by international standards, ensuring accuracy and reliability in diverse applications. By reviewing these details, users can easily identify the right size and configuration for their specific needs, whether in structural projects, mechanical assemblies, or industrial installations. The data is presented in a standardized format to make comparison simple and to support informed decision-making across all product categories."
Materials: carbon steels (C15, C20, C35, A36, 35CrMo, 42CrMo, 40Cr), alloy steels (SCM435, SCM440, A325, A490), stainless steels (201, 202, 301, 302, 303, 304, 304L, 316, 316L, 316Ti, 321, 347), duplex 2205 and super duplex 2507, plus nickel, copper, aluminium (6xxx/7xxx), titanium and Inconel alloys or any material you specify.
Grades and standards: DIN, ISO, ANSI, ASTM, JIS and GB; property classes 4.8, 5.8, 6.8, 8.8, 10.9 and 12.9; A2-50, A2-70, A4-70 and A4-80; other grades on request.
Sizes: metric M3 to M120 and inch 1/4″ to 4″, in any length; non-standard and custom parts made to your drawing.
Finishes: black oxide, phosphating, hot-dip and electro galvanizing, zinc-nickel, zinc flake (Dacromet, Geomet), nickel, chrome, cadmium, silver, gold and copper plating, PTFE, PVD, anodizing and ceramic coatings.
Quality: dimensional inspection on every order; hardness, tensile and salt-spray tests and mill test certificates on request.
These products share a standard or a catalogue group with the one on this page. Open any card to see its drawing, dimension table and downloads, and compare sizes and standards before you ask for a quote.
![Additional Selected Sizes of Type A Plain Washers [Table 1B] (ASTM A325 / ANSI 1060) — ANSI Plain Washers, Indasco product W-03-0005](https://indasco.com/wp-content/uploads/2026/09/W-03-0005-Th.jpg)
Additional Selected Sizes of Type A Plain Washers [Table 1B] (ASTM A325 / ANSI 1060)
Additional Selected Sizes of Type A Plain Washers [Table 1B] (ASTM A325 / ANSI 1060)
Metric Plain Washers (General Purpose)
Metric Plain Washers (General Purpose)
![Type B Plain Washers [Table 2] (ASTM A325 / ANSI 1060) — ANSI Plain Washers, Indasco product W-03-0001](https://indasco.com/wp-content/uploads/2026/09/W-03-0001-Th.jpg)
Type B Plain Washers [Table 2] (ASTM A325 / ANSI 1060)
Type B Plain Washers [Table 2] (ASTM A325 / ANSI 1060)
![Preferred Sizes of Type A Plain Washers [Table 1A] (ASTM A325 / ANSI 1060) — ANSI Plain Washers, Indasco product W-03-0004](https://indasco.com/wp-content/uploads/2026/09/W-03-0004-Th-150x150.jpg)
