S9407-AB-HBK-010 Datasheet, PDF (49/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
4.6 FINISH
4.6.1 Finish for Low-Carbon Steel Fittings
Finish for components made of low-carbon steel shall be a nickel coating in accordance with
ANSI/ASTM-2404C.
4.6.2 Finish for CRES Fittings
Parts made of 300-Series CRES shall be passivated in accordance with QQ-P-35.
4.6.3 Finish for Conduit Coupling (GR2127)
Finish for GR2127 conduit coupling shall be a cadmium plating in accordance with QQ-P-416,
Type I, Class 3.
4.7 PERFORMANCE
4.7.1 Mechanical
The body of a transition fitting shall telescope over the conduit end-fitting (GR2126) to allow
room for cable termination. Assembly of parts shall not place any torque or tensile loads on the
transition fitting.
4.7.2 Moisture Sealing
Where moisture sealing or splashproof conditions are required, an O-ring gasket of material
specified in 4.5.5 shall be provided as part of the transition fitting to seal each critical joint.
Where moisture sealing is not a requirement, O-ring gaskets may be omitted from transition
fittings. However, such omission shall not impair the mechanical performance of the assembly.
4.7.3 Cable Protection
The fitting shall have smooth inner surfaces free of sharp burrs or edges that could abrade
the insulation or shield of a cable.
4.7.4 Tensile and Compressive
All transition fittings and end-fittings shall withstand, without slippage, a tensile load of 50
pounds applied between fitting and conduit for 1 minute. Also, such fittings shall withstand, without
slippage, a compressive load of 50 pounds applied between fitting and conduit for 1 minute.
4.8 QUALIFICATION
4.8.1 Qualification
Manufactures' designs for transition-fittings must be approved by the Navy. Qualification tests
are not required for accessory fittings, but they must be manufactured in accordance with this
specification. Manufacturers who are interested in having their designs approved should follow the
procedure listed below. Samples sent for testing should be addressed to the Naval Undersea
Warfare Center, EMC Branch, Code 3431, Newport, RI 02841-1708. Approval of the GR2120,
GR2123, GR2124 and GR2125 transition fittings will be based on conformity of the fitting to the
characteristics outlined in this specification and on any other factors which may affect intended
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