Stampings
Boker's in-house tool department and wire EDM can manufacture your most complex metal stampings. Wether it's flat blanking, piercing, metal forming, or deep draws Boker's has the expertise to provide your precision parts. Stamping capabilities range from 12" x 12" (flat) with material thicknesses from .005" to .134" and draws of up to 3" deep and 8" in diameter.
Washers, Spacers, and Shims
Boker's, Inc. can manufacture your flat washers, spacers and shims with an outside diameter from 0.080" to 12" and material thickness from 0.005" to 0.134". Boker's also inventories thousands of stock tools in order to manufacture specific non-standard washer sizes without tool charges.
Special Shapes and Sizes
As the photos show, Boker's can make special washer shapes and sizes, up to 12" in outside diameter. These custom items are made with very low tooling costs. They can be easily quoted by sending or faxing us your print. Tell us what you need and we'll make it to your exact specifications.
Materials
To expedite your order and shorten delivery time, Boker's has immediate access to 2,000 commonly specified and hard-to-find materials including low carbon, cold rolled strip and sheet steel; SAE 1050, 1075, and 1095 spring steel; blue and black temper spring steel; low alloy steel sheets; brass; copper; nickel silver; beryllium copper; phosphor bronze; stainless steel; aluminum; and several non-metallic materials such as Delrin®, Teflon®, Mylar®, Nylon, fiber, polyethylene, and various phenolics. Certificates of Compliance or chemical/physical analyses are available upon request. Whatever your needs, if it can be stamped, Boker's can turn it into your washer or spacer.
Non-Metallic Washers and Spacers
The thickness ranges stated are minimum and maximum values for metallic washers and spacers but may be suitable for non-metallic pieces as well. When the thickness stated for a particular tool is .005"-.010", that tool can be considered for non-metallic items from .005" to .125" thick. These washer tools are in bold type when listed for easy reference.
When determining the proper sized tool for your washer or spacer, the outside diameter (O.D.) listed in the catalog typically remains the same for both the metallic and non-metallic part. The inside diameter (I.D.), however, may shrink by as much as ten percent of the material thickness depending on the material used and its thickness.
Boker's estimates of these shrinkage factors are as follows:
| Material | Factor (%) |
| Polycarbonate (Lexan®) | 10-12 |
| Nylon | 10 |
| Polyethylene | 10 |
| Acetal (Delrin®, CELCON®) | 10 |
| PVC | 10 |
| A.B.S. | 10 |
| MD Nylon-Nylatron® | 10 |
| Polypropylene | 5-10 |
| PTFE (Teflon®) | 5 |
| Polyester (Mylar®) | 5 |
| Linen Phenolic | 5 |
| Vulcanized Fiber | 0-05 |
| FR-4 | 0-05 |
| G-10 | 0-05 |
For assistance in determining the actual tool to be used, please contact one of our estimators.
ISO 9001:2000 Registered
Boker's maintains an ISO 9001:2000 registered status to ensure your service will be efficient and your parts will meet your specifications - everytime.
