Intel Xeon X3440 BX80605X3440 User Manual
Product codes
BX80605X3440
Thermal/Mechanical Specifications and Design Guidelines
31
Independent Loading Mechanism (ILM)
4.1.3
Shoulder Screw and Fasteners Design Overview
The shoulder screw is fabricated from carbonized steel rod. The shoulder height and
diameter are integral to the mechanical performance of the ILM. The diameter provides
alignment of the load plate. The height of the shoulder ensures the proper loading of
the IHS to seat the processor on the socket contacts. The design assumes the shoulder
screw has a minimum yield strength of 235 MPa.
diameter are integral to the mechanical performance of the ILM. The diameter provides
alignment of the load plate. The height of the shoulder ensures the proper loading of
the IHS to seat the processor on the socket contacts. The design assumes the shoulder
screw has a minimum yield strength of 235 MPa.
A dimensioned drawing of the shoulder screw is available for local sourcing of this
component. Refer to
component. Refer to
The standard fasteners can be sourced locally. The design assumes this fastener has a
minimum yield strength of 235 MPa. Refer to
minimum yield strength of 235 MPa. Refer to
for the standard 6-32 thread
fasteners drawing.
Note:
The screws for Server ILM are different from Desktop design. The length of Server ILM
screws are shorter than the Desktop screw length to satisfy Server secondary-side
clearance limitation.
Note:
The reference design incorporates a T-20 Torx* head fastener. The Torx* head fastener
was chosen to ensure end users do not inadvertently remove the ILM assembly and for
consistency with the LGA1366 socket ILM.
Figure 4-3. Shoulder Screw
Shoulder
6-32 thread
Cap