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|  MIL-H-904J
3.10.1 Method I. Exposed surfaces, except hook chains, and other wearing surfaces, shall be
painted as specified herein. Before assembly, surfaces requiring painting shall be cleaned in
accordance with SSPC SP 10. Steel surfaces, except for corrosion~resisting steels, shall be coated
with an inorganic zinc primer conforming to MIL-P-23236, class 3, applied at 3 to 5 roils dry film
thickness (DFT). Prior to overoating, residual deposits shall be removed by the manufacturer's
recommended cleaning procedure. A coat of formula 150 which has been thinned with 1 pint of
thinner per gallon, at a wet film thickness of 3 roils, shall be applied in accordance with M&P-
24441 and MIL-P-24441/l. This shall be followed by a full coat of formula 151, in accordance with
MIL-P-24441 and MIL-P-24441/2, applied at 2 to 4 roils DFT, and two mats of silicone alkyd
enamel conforming to TT-E-490 (haze gray), applied at 1 to 2 roils DFT per coat. The first coat
of enamel shall be applied when the formula 151 is in the tack stage. Other metals that are not
inherently corrosion resistant, as defined by MIL-E-917, shall be processed (treated, plated, or
painted) in accordance with MIL-E-917 to provide corrosion resistance.
3.10.2 Method II. Method II surface preparation and finish shall be contractor's standard
commercial procedures.
3.11 Identification. Identification shall be cast, stamped, or attached on an identification plate
in a prominent location on each hoist. The following information shall be provided:
Hoist weight and shock (grade), as applicable
b. Class and type, as applicable
c. Rated load
d. Military specification (MIL-H-904)
e. National stock number (NSN)
f. Manufacturer's model number, part number, or serial number
g. Contract or order number
h. Manufacturer's name or trademark.
3.11.1 Class 3. For class 3 hoists, space shall be provided, either on the identification plate or
in another prominent location, for a 21-word inscription (135 spaces) of 0.125 inch (minimum) size
lettering.
3.11.2 Class 3 marking. Metal castings for load bearing parts of class 3 hoists shall be
identified with the foundry heat number cast or stamped on a raised pad 0.125 inch above the
casting surface using 0.250-inch letters. When a raised pad is not practical due to space or function,
the heat number shall be applied in a legible, permanent manner. Marking stamps shall be of the
low stress type in accordance with MIL-STD-792.
3.12 Workmanship. The hoist shall withstand any operation specified herein without
malfunction or component failure caused by faulty workmanship. All parts of the hoist, before and
after painting, shall be clean and free of harmful extraneous material. Edges and surfaces exposed
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