Technical Catalogue Summary for Washers and Spacers

1. Product Specifications

This document provides detailed technical data for washers and spacers used in mechanical assemblies. Each product is identified by a unique SKU and characterized by key dimensional parameters:

• SKU: Unique product identifier for ordering and reference.
• B: Inner diameter or bore size (mm).
• A: Outer diameter (mm).
• T: Thickness or height (mm).
• M: Metric thread size designation (e.g., M1.6, M3, M8, M10, up to M75).
• Additional dimensions: Parameters such as D, C, E, H, and others appear in tables, representing various geometric features relevant to fit and function.

These parameters ensure precise mechanical compatibility with bolts, screws, and tubes.

2. Product Range and Variants

The catalogue covers a broad spectrum of washers and spacers, including:

• Sizes from very small (M1.6) to large (M75+).
• Thicknesses ranging from 0.3 mm to over 40 mm.
• Outer diameters from approximately 2 mm up to over 90 mm.
• Variants include standard DIN washers (e.g., DIN 125, DIN 433, DIN 9021) and specialized washers/spacers with custom dimensions.
• Some SKUs marked with an asterisk (*) denote special or non-standard items requiring further consultation.

3. Standards and Norms

Products conform to recognized international standards to ensure interchangeability and quality:

• DIN Standards: Including DIN 125 (flat washers), DIN 433 (thin washers), DIN 9021 (large washers), DIN 34816, and DIN 34815 (specialized washers).
• Thread Standards: Metric thread sizes (M) and some UNC/UNF equivalents are specified.

4. Materials and Compliance

Materials used include various plastics and elastomers such as PA6, PA66, LDPE, PP, PI, POM, PVDF, PEEK, PAGF, PTFE, PPS, RENY, PS, EPDM, VMQ, NBR, CR, and FKM. Key compliance and safety features include:

• RoHS and REACH: Compliance with environmental and chemical safety regulations.
• Flammability Ratings: UL94 classifications such as HB, V2, and V0 indicate fire resistance levels.
• Color coding references (RAL standards) assist in product identification and aesthetic matching.

5. Data Presentation and Key Parameters

The document organizes data primarily in tabular form, listing SKUs alongside dimensional parameters for quick reference. Key dimension labels include:

• D: Outer diameter or nominal diameter.
• C, A, E, B, H: Various dimensions related to thickness, width, height, bore size, or flange width.
• M: Metric thread size.

Tables cover washers, spacers, and tube clamps with dimensions tailored to specific tube diameter ranges and mechanical requirements.

6. Critical Information and Recommendations

• Always select washers and spacers matching the DIN standard and metric thread size of the mating fastener to ensure proper fit and function.
• Verify material compatibility with the application environment, considering chemical resistance, mechanical load, and flammability ratings.
• Use SKU codes and dimensional tables for precise product identification, ordering, and inventory management.
• Consider thickness variations to achieve desired spacing or load distribution in assemblies.
• Consult additional documentation for SKUs marked with an asterisk (*) to clarify special features or non-standard specifications.
• For tube clamps and spacers, ensure compatibility with specified tube diameter ranges and thread sizes (commonly M8 to M12).
• Confirm compliance with RoHS, REACH, and UL94 standards for environmental and safety requirements.

7. Limitations and Notes

• The document excerpt lacks explicit definitions for some dimension labels; users should refer to full technical standards or manufacturer documentation for precise meanings.
• No detailed information on surface finish, hardness, load ratings, or corrosion resistance is provided.
• Graphical or schematic illustrations are absent, which may limit visualization of washer/spacer profiles.
• Some zero values in dimensions may indicate optional features or design variations requiring clarification.

8. Summary

This technical catalogue section offers a comprehensive reference for washers and spacers, supporting engineering design, procurement, and inventory control. It emphasizes dimensional precision, standard compliance, and material safety to ensure proper mechanical assembly and performance. The extensive SKU and dimension listings facilitate accurate product selection across a wide range of sizes and applications.