Engineering Resources
Find tools designed to streamline sourcing, specification and planning. View the quick-reference guides or download for continued use to support your workflow.

Stampings & Washers Brochure
Developed specifically for design engineers and procurement teams, this valuable resource provides design guidelines, technical tools and capability overviews to support sourcing, specification and planning needs.

Scheduling Calendar
The Boker’s 15-month calendar is an easy-to-read scheduling reference featuring clearly numbered weeks, with all holidays and Sundays listed in red.

Designer’s Guide to Precision Metal Stampings
A valuable resource of design considerations for engineered stamped components, providing foundational knowledge for material thickness, size and tolerance factors.

Selecting the Optimal Washer Solution
A comprehensive guide of washer styles, materials and other variable factors for identifying the appropriate washer for a specific application.

Sheet Metal Gauge Chart
An essential guide to standard sheet metal thicknesses across various materials, helping engineers and buyers accurately specify material requirements and understand gauge-to-thickness relationships.

Drill Bit Conversion Chart
A convenient tool for accurately matching drill sizes, decimal equivalents and tap sizes, to ensure precise hole sizing and alignment with design and manufacturing requirements.

Metric Conversion Chart
A handy reference tool for anyone involved in design, sourcing, or manufacturing operations, the metric conversion chart displays equivalents for common measurements ranging from 1/64″ to 1″ and 0.1 mm to 100 mm.

Raw Materials List
A full list of the raw materials in inventory or immediately accessible, with many stocked in a variety of thicknesses, tempers and grades.

Base Element Index
Quick reference guide for primary metals used in manufacturing engineered stamped components, aligned with their associated symbols.

Washer List
View or download the complete list of stock tools, from which Boker’s washers, spacers, shims and disks are made to order in any quantity without a tooling charge.

Glossary of Stamping Terms
A list of commonly used terms and their meanings within the Boker’s culture, to ensure effective communication with our customers.

Non-Metallic Shrinkage Factor
When determining the proper sized tool for a flat washer or spacer, the O.D. typically remains the same for both metallic and nonmetallic parts, but the I.D. may shrink based on material used and thickness. Find shrinkage factor estimates.

Stamping Edge Conditions
Burrs are a normal by-product of the metal stamping blank and piercing process. They can have ragged, sharp and uneven edges. Find additional details, specs and diagrams.

Stampings/Washers
Arandelas
Rondelles
Unterlegscheiben
Rondelles
Arruelas
Rondanas
Arandelas
Washers (India)
Chinese (Simplified)


