Hardware; Conclusion - Intel Pentium 4 Design Manual

Intel® Pentium® 4 Processor in the 423-pin Package Thermal-Mechanical Support Design Guide

2.3 Hardware

The screws should be 6-32 (x 1/2 inch-3/8 inch) pan-head or round-head screws (four each)
for the direct chassis-attach solution. The screw head must be less than 0.284 inch
diameter and less than 0.190 inch in height. It is the responsibility of the chassis vendor to
supply the four (4) 6-32 screws with the chassis.

3. Conclusion

ATX systems that support Pentium® 4 processors will require additional structural support
for large-mass heatsink solutions. The direct chassis-attach solution outlined in this design
guide identifies a single tested solution that will allow interchangeable ATX motherboards
and ATX chassis combinations. It is the responsibility of the supplier, OEM, and system
integrator to validate the final system design to ensure there is no damage to the system
components during shipping and handling.
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