MIL-PRF-19207/31F
Ltr
Inches
mm
Ltr
Inches
mm
Min
Max
Min
Max
Min
Max
Min
Max
A
2.860
2.900
72.64
73.66
M
1.140
1.180
28.96
29.97
B
.860
.900
21.84
22.86
N
.360
.400
9.14
10.16
C
.540
.580
13.72
14.73
P
.088
.098
2.24
2.49
D
1.400 (REF)
35.56 (REF)
R
2.000
2.013
50.80
51.13
E
2.700
2.740
68.58
69.60
S
.994
1.009
25.25
25.63
F
.470 (REF)
11.94 (REF)
T
.246
.256
6.25
6.50
G
.560 (REF)
14.22 (REF)
U
.497
.507
12.62
12.88
H
.500 (REF)
12.70 (REF)
V
.496
.506
12.60
12.85
J
1.190 (REF)
30.23 (REF)
W
.997
1.007
25.32
25.58
K
.995
1.005
25.27
25.53
X
.771
.786
19.58
19.96
L
.040
.080
1.02
2.03
Y
.147
.157
3.73
3.99
NOTES:
1.
Dimensions are in inches.
2.
Metric equivalents (to the nearest 0.01 mm) are given for general information only, and are based upon
1 inch = 25.4 mm.
Unless otherwise specified, tolerances are ±0.02 (0.51 mm) for two place decimals and ±0.005 (0.13 mm) for
3.
three-place decimals.
4.
Cap thread shall be 9/16-27NEF-2 and provide for cap interchangeability.
5.
Cap and body molding material: It is recommended that types MAI-60, GDI-30F or SDG-F of American
Society for Testing and Materials ASTM-D5948 be considered for meeting the cap and body molding material
requirements of this specification.
6.
Gaskets and O-rings: It is recommended that class 3 silicone rubber of A-A-59588 (Rubber, Silicone), be
considered for use in meeting the gasket and o-ring material requirements of this specification.
FIGURE 1. Type FHN47W and type FHN47WB fuseholder - contined.
REQUIREMENTS:
Interface and physical dimensions: See figure 1.
Cap and body molding material: Cap and body molding materials shall be selected to enable the fuseholder to
meet the performance requirements of this specification. Additional information and guidance on cap and body
molding material are specified in the notes.
Fuse accommodation:
Ferrule type:
Size:
0.406 inch (10.31 mm) diameter, 1.500 inches (38.10 mm) length.
(or equivalent size and styles)
Poles: Three.
Rating: 30 amperes maximum, 500 volts maximum.
Panel thickness: 0.125 inch (3.18 mm) maximum.
Nonindicating.
Terminals: Screw and threaded stud (see figure 1).
Enclosure: Watertight or watertight and body sealed (for submarine applications use FHN47WB).
Weight: 5.5 ounces maximum.
2