MIL-STD-1130C
SAE INTERNATIONAL
SAE-AMS-QQ-N-290 - Nickel Plating (Electrodeposited). SAE-AMS-P-81728 - Plating, Tin Lead (Electrodeposited).
SAE-AS81822 - Wire, Electrical, Solderless Wrap, Insulated and Uninsulated.
(Copies of these documents are available on line at www.sae.org from SAE International, 400
Commonwealth Drive, Warrendale, PA 15096-0001, and Tel: 877-606-7323 [inside USA and Canada] or
724-776-4970 [outside USA], email at CustomerService@sae.org.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained
3. DEFINITIONS
3.1 Solderless wrapped, electrical connection. The terminology and makeup of this type of connection on one type of wrappost configuration is illustrated on figure 1.
3.2 Class A (solderless wrapped electrical connection) (preferred method). This connection consists of a helix of continuous, solid, uninsulated wire tightly wrapped around the wrappost of a solderless wrapped contact to produce a mechanically and electrically stable connection. The number of turns required will depend on the gage of wire used (see 5.3.2). In addition to the length of uninsulated wire wrapped around the wrappost, an additional minimum half turn of insulated wire shall be wrapped around the wrappost to help insure better vibration characteristics. To accomplish a half turn, the wire must be in contact with at least three corners of the wrappost. (See figure 1.)
3.3 Class B (conventional solderless wrapped electrical connection). This connection is the same as described in class A (see 3.2) except that the additional half turn of insulated wire is not required. (See figure 1.)
3.4 End tail. An end tail is the end of the last turn of wire of a solderless wrapped connection which may extend in a tangential direction instead of resting against the wrappost. (See figure 1.)
3.5 A turn of wire. A turn of wire shall consist of one complete, single helical ring of wire wrapped
360° around the wrappost. For the purpose of counting turns, the number of times the wrapped wire passes and intercepts the reference edge of the wrappost after the first intercept of uninsulated wire and wrappost shall constitute the number of turns of uninsulated wire in the connection.
3.6 Gas-tight area. The gas-tight area is that contact area between the wrappost and wire which, due to the quality of the wrap, will exclude gas fumes. (See 5.6.2.)
3.7 Reference corner. The corner at which the first turn of uninsulated wire intercepts is the reference corner.
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