AMSC N/A FSC 5935
MIL-PRF-18148/1
30 September 2009
SUPERSEDING
MS3349C
1 June 1984
PERFORMANCE SPECIFICATION SHEET
PLUG, ELECTRIC, TWO-WIRE, AIRCRAFT STORAGE BATTERY
This specification is approved for use by all Departments and Agencies of the
Department of Defense.
The requirements for acquiring the product described herein shall consist of this specification
sheet and MIL-PRF-18148.
REQUIREMENTS:
1. Part or identifying number. The part or identifying number (PIN) of the plug covered by this
specification sheet shall be MS3349-2. The MS3349-2 is a two-wire electric plug used with
aircraft storage batteries.
2. Dimensions and weight. The dimensions of the plug shall be as shown on figure 1. The
weight of the plug shall be not greater than 0.75 pounds (see 3.12.3 of MIL-PRF-18148 and
3.12.4 as modified herein).
3. The spacing of rigid sockets shall be as shown on figure 1. Nonrigid sockets must self-align
with the MS3509 series receptacle.
4. MIL-PRF-18148 variance
. The plug shall comply with MIL-PRF-18148 except as follows.
4.1 Modify the following paragraphs:
3.8.2 Electrical connections. Insert after the first sentence: "Each two-wire MS3349-2
plug shall include as its electrical connections two sockets with their axes vertical and in a plane
parallel to the face of the receptacle. Each plug shall be usable with two 000-gauge wires
conforming to SAE-AS50861/2 for type 2. Each plug shall include two wire entry holes on the
bottom, through which the wires may be brought into the sockets. Each plug shall be made so
that the wires shall enter it vertically and in a plane parallel to the face of the receptacle. Each
plug shall be made so that the wire which enters the left wire entry hole, as viewed looking at the
front (handle) face of the plug, can be connected to the negative contact only, and the wire which
INCH-POUND
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