MIL-B-18F
3.7.9.5.1 Mounting, The socket shall be so supported and mounted, that the top surface of the socket shall not
protrude above the adjacent surface of the jacket and shall not be more than .125 inch (3.18 mm) below the surface of
the jacket or socket dome, when used; initially, during, and after subsequent insertions of the mating plug. The socket
pin-circle center shall be located as specified, and the jacket opening shall be positioned so that its center is within a
.094 inch (2.39 mm) diameter circle, whose center coincides with the socket pin-circle center; initially, during, and after
insertions of the mating plug. The angular orientation of the socket shall be within 5° of the battery centerlines or other
lines of orientation, as specified. Socket well-depth, when measured from the top surface of the jacket or socket dome,
shall be as specified (see 3.1).
3.7.9.5.2 Contact resistance. Contact resistance between each socket insert and the applicable pin of the mating
plug, when tested in accordance with 4.7.4, shall not exceed 0.005 ohm.
3.7.9.6 Flat surface. Flat-surface terminals shall be a flat plate of brass, or other metal, when specified (see 3.1),
the center of which may be level, have a raised or a recessed portion, or a punched or drilled hole, as specified (see
3.1). When one terminal is the bottom of the can housing the battery, it shall be smooth and not injured as a result of
cleaning or polishing. When the positive terminal is the carbon rod of a cell, it shall have a tight-fitting cap of brass, or
other metal when specified (see 3.1). The cap shall be coated with solder, tin (see 3.4), or nickel. The cap and the
raised center portion of a flat plat may be provided with a centered, outward projecting point, which does not exceed
.020 inch (.05 mm)
3.7.9.7 Coil and flat spring. Coil and flat-spring terminals shall be made of the beryllium copper, spring brass, or
phosphor bronze, and shall be specified (see 3.1).
3.7.9.8 Protection of terminals. When flash-dip micro-crystalline wax, or equal, is used to waterproof the jacket, the
terminals shall be covered with a removable tape or cap. Marking shall be legible after removal of the tape or cap.
The wax dip shall be applied after the application of the tape or cap.
3.7.10 Strap handles. Strap handles shall be of webbing, using natural or synthetic fiber, or of plastic material.
The width of the strap shall be .438 inch (11.13 mm) minimum. The effective length of the strap shall be at least one
inch longer than the distance between its anchorages. The strap shall withstand the test specified in 4.7.5 without
breaking or separating from its anchorages.
3.7.11 Jackets. The jackets may be fabricated of either metallic or nonmetallic material. The contents of multicell
batteries shall fit snugly enough in the jackets to minimize movement of the cells. Jackets covering one or more
cylindrical cells stacked end on end, and having a open top and open bottom, shall be so attached to the cells as to
prevent them from slipping out when held or shaken vertically. The bottom opening of the jacket shall be of the size
specified (see 3.1).
3.7.11.1 Metallic jacket.
3.7.11.1.1 Prior to battery fabrication. The inside of the jacket, when other than terne plate, shall be coated or lined
with an electrolyte-corrosion-resistant material.
3.7.11.1.2 As a fabricated battery. The outside of the battery shall have a coating to protect the jacket from
corrosion during or at the conclusion of any of the tests specified herein. Unless otherwise specified (see 3.1), the
contents within the jacket shall be completely insulated from the metal. The jacket shall not become permanently
distorted, nor open at any of its seams after being subjected to the test specified in 4.7.6.1. The test specified in
4.7.6.1 shall apply only to batteries weighing five pounds or more.
15
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business