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10.3.2. Rivscrew* Attach
The Rivscrew attach mechanism uses a specialized rivet that is inserted through a hole in the
heatsink into the thermal plate. Upon insertion, a threaded fastener is formed that can be
removed if necessary. For Rivscrew attachment, the maximum depth between the thermal
plate and the bottom of the rivscrew mandrel is 0.125". For use of the Advel Rivscrew (part
number 1712-3510), the heatsink base thickness must be 0.140 ±0.010" See Figure 10-9,
Figure 10-10 and Figure 10-11 for details of heatsink requirements for use with Rivscrews.
For other heatsink base thicknesses, contact your vendor for other Rivscrew parts that would
be required.
3.0
Maximum Total
Heatsink Depth
0.140 ±0.010
Recommended Heatsink
Base Thickness
All dimensions in inches.
Figure 10-9. Heatsink Recommendations and Guidelines for Use with Rivscrews*
Heatsink Base
Thermal Plate
0.125 Max Depth
All dimensions in inches.
Figure 10-10. Heatsink, Rivscrew* and Thermal Plate Recommendations and Guidelines
THERMAL SPECIFICATIONS AND DESIGN CONSIDERATIONS
Mandrel
Rivscrew*
Processor Core
Processor Substrate
0.064
(Including Tolerance)
0.305 gap in fins to allow for
clearance of nose, Rivscrew*
and mandrel (Minimum)
0.140 ±0.010 Heatsink Base (Recommended)
Thermal Grease
000901
00091
000915a
10-9
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