MIL-HDBK-1011/1
8.6
Glass and Glazing. There are few unique requirements for glass and
glazing in tropical areas except for the increased use of tinted glass. Size
and thickness of glass may vary from non-tropical applications because of
increased wind pressure. Plastic and rubber-glazing elements, including
weatherstripping must be UV-resistant.
8.7
Finish Hardware. Do not use copper alloy screws or bolts to secure
or connect aluminum items, even if the copper alloy item is plated. Use
stainless steel or aluminum screws. Use stainless steel Type 302 or 304
screws and bolts on items exposed to the weather. Where 6061-T5 aluminum for
threshold is secured to concrete floors, protect the contact surfaces of the
threshold and concrete against galvanic or corrosive action. The use of
galvanized bolts and screws exposed to the weather is discouraged. Use
galvanized screws and bolts to secure or connect copper alloy items.
8.7.1
Locksets. In a heavy salt spray environment, the entire lockset
used on the exterior is stainless steel Type 302 or 304 including screws,
bolts, and nuts. Standard commercial grade hardware is recommended for use
when conditions are not as severe as direct salt spray.
Interior lock and latch sets are either bronze or stainless steel
Type 302
or 304, including fronts, strike, escutcheons, knobs, bolts and all
interior
working parts. In an air conditioned building commercial grade I
locksets
are acceptable. In a non-air conditioned building, use the same
locksets
recommended for exterior doors, marine grade I, fully non-ferrous.
8.7.2
Hinges. Hinges on exterior doors, whether exposed on the interior
or exterior side of the door, are stainless steel Type 302 or 304 with
stainless steel screws, bolts and pins.
Hinges on interior doors are either cast or cold forged bronze or
stainless steel Type 302 or 304. Screws, pins and bolts are bronze or
stainless steel. Nylon or teflon bearings may be provided; however, use ball
bearing type hinges on large heavy doors and frequently used entrance/exit
doors. Except for stainless steel, do not use ferrous metal as base metal for
hinges.
Fire-rated doors must have a base metal of either steel or
stainless steel. Do not use bronze hinges on fire-rated doors. Use steel
hinges with stainless steel pins. Do not use paint-grade hinges.
8.7.3
Closers. Use stainless steel inside bracketed or door mounted
closures on exterior doors. Non-ferrous closures, such as aluminum or cast
bronze, are permissible where door utilization is minimal. Use Type 302 or
304 stainless steel or non-ferrous closures on interior doors.
On surface-mounted closers use a special rust inhibiting finish on
all ferrous parts. This is also recommended for concealed closers.
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