A-A-55294A
TABLE II. Spectral reflectance requirements
Reflectance values (percent)
Wavelength
Light Green 354
Dark Green 355 and Brown 356
Black 357
Nanometer (nm.)
Min
Max.
Min.
Max.
Min.
Max.
600
8
18
3
9
--
10
620
8
18
3
9
--
10
660
8
18
3
12
--
10
680
10
22
3
14
--
10
700
18
33
5
18
--
10
720
22
45
7
20
--
10
740
30
55
12
28
--
10
760
35
65
18
36
--
10
780
40
75
26
44
--
10
800
45
80
34
52
--
10
820
50
86
42
60
--
10
840
55
88
50
68
--
10
860
60
90
56
74
--
10
3.2.2 Visor interlining. The visor interlining shall be a plastic high density polyethylene
material weighing 12.0 to 14.5 grams per visor, having a thickness of 0.083 to 0.089 inch, and
40 to 60 percent stiffness when tested in accordance with ASTM-D-747.
3.2.3 Cap interlining. The inside of the center front of the cap shall be stabilized with a
square cut piece of natural white, plain weave, multifilament polyester or nonwoven
interlining made from 100 percent polyester continuous filament fibers that are randomly
arranged and bonded at the filament junctions or from a blend of staple nylon and staple
rayon fibers, or a blend of polyester and nylon or rayon staple bound with a suitable acrylic
binder. The contractor shall submit a certificate of compliance to ensure that the fiber
content requirement has been met. The stabilizer cloth shall be cut 3 inches wide, and the
length shall extend from the top crown joining seam to the visor joining seam. The interlining
shall conform to the requirements specified in Table III.
TABLE III. Interlining requirements
Characteristic
Requirement
Test method
Weight(oz./sq. yd., min.)
ASTM-D-1117, Section 17
3.4
Non-woven
ASTM-D-3776
3.3
Woven
Filling
Warp
Breaking strength (lbs., min.)
80
ASTM-D-1117, Section 7
100
Non-woven
ASTM-D-1682, Section 16
190
150
Woven
Warp stiffness (in./lbs.)
0.0030(min.)
0.0120(max.) ASTM-D-747
4
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