MIL-DTL-45144E
3.6.9. Jute yarn volatile matter. Volatile matter shall be not greater than 13.5 percent by
weight.
3.7. Asphalt. The fuse shall be treated with asphalt following the cotton yarn spinning of
3.5.2.
3.7.1. Asphalt coating weight. The fuse shall be wiped to give a coating from 1.1 to 1.6
pounds per 1000 feet of fuse.
3.7.2. Asphalt softening point. The asphalt softening point shall be not less than 148º and not
greater than 162° Fahrenheit (F).
3.7.3. Asphalt penetration. The asphalt penetration shall be 2.2 millimeters plus or minus 0.2
millimeters at 77°F and not greater than 130 millimeters at 115°F.
3.7.4. Asphalt volatile matter. The asphalt's volatile matter shall be not greater than 0.1% by
weight.
3.8. Plastic. A plastic coating shall be applied following the application of asphalt.
3.8.1. Plastic extrusion. The plastic coating shall be applied with cross head extrusion
equipment. The plastic used for coating the fuse shall comply with L-P-390 except for pigment or
dye required to comply with 3.8.5 for Type I and 3.8.6 for Type II. The addition of pigment or dye
shall not adversely affect the physical and chemical properties of the plastic.
3.8.2. Plastic coating wall thickness. The wall thickness of the plastic coating shall be not less
than 0.012 inch.
3.8.3. Plastic coating imperfections. The plastic coating shall be smooth and free of foreign
matter, pin holes, bubbles, breaks, discontinuity, or other defects which would adversely affect the
function of the finished fuse.
3.8.4. Plastic elongation. The elongation shall be not less than 70%.
3.8.5. Color (Type I). The plastic shall be green conforming to FED-STD-595/34088.
3.8.6. Color (Type II). The plastic shall be gold conforming to FED-STD-595/17043.
3.9. Fuse diameter after cotton yarn counter spinning. The fuse diameter shall be not greater
than 0.164 inch after the delay train's cotton yarn is counter spun.
3.10. Fuse diameter of the finished fuse. The outside diameter of the finished fuse shall be
0.200 plus or minus 0.005 inch.
3.11. Fuse length. The finished fuse shall be cut into 50 feet plus 0.50 feet minus 0 feet.
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