Male-Female stacking spacers from RAF Electronic Hardware help overcome space limitations that may occur when PC/104 or PC/104-Plus bus drives are installed. With this approach, standalone module stacks are used like ultra-compact bus boards, but without needing backplanes or bird cages. Module boards are spaced exactly 0.6 inches apart using RAF precision-made nylon or aluminum male-female spacers, to build structurally secure standalone module stacks. RAF stacking spacers allow PC/104 and PC/104-Plus embedded system designers to employ application-specific module stacks for their products that are easily and securely assembled. The RAF hardware can be used with any of more than 100 different PC/104 ultra-compact bus board modules produced by manufacturers today.

Technical Specs
* Nylon or Aluminum
* Length: 0.600″; Diameter 3/16″; round and hexagon profiles
* 3/16″ long 4-40 male thread on one end
* 1/4″ deep 4-40 internal thread depth
* Mating screw and hex nut available for either material

RAF Product Description
Stacking Spacers Round Profile
4000-440-AL MOD-L = .600 (aluminum)
4000-440-N MOD-L = .600 (nylon)

Stacking Spacers Hexagon Profile
4500-440-AL MOD L =.600 (aluminum)
4500-440-N MOD L =.600 (nylon)

  • Precision manufactured for perfect fit
  • Material quality, finish and performance assured
  • RAF has the highest level of quality, service and on-time delivery in the industry

RAF is the leading supplier of electronic hardware components to a variety of industries, including computers, telecommunications, medical, entertainment and military/aerospace. Our Product Line includes the following: standoffs, spacers, handles & ferrules, male/female standoffs, captive screws, retainers, jackscrews, precision shoulder screws, thumbscrews, thumbnuts, swage standoffs, insulating washers, anti-rotation swage standoffs, swaging tools, and plastic circuit board supports. All products can be supplied in American standard and metric dimensions. RAF products are marketed through our online and print catalogs and are primarily sold through our worldwide network of Distributors. Additional support for both OEM's and Distributors comes from our Regional Sales Managers. As a full service manufacturer, we offer a wide range of products at your fingertips for immediate delivery. Most catalog items are off the shelf and available for same-day shipment. We can also supply any customized products with small minimum orders and competitive pricing. Our in-house plating facility also enables us to provide our customers with a quick turn around on plated parts. We are RoHS compliant.

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