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2.4. Specifications
Product Specification 108-1219 covers product performance requirements and test data relating to these
connectors.
2.5. Instructional Material
Instruction Sheet 408-9450 provides information on the use and maintenance of the terminating head, which
can be used in a manual handle assembly (408-6790), pneumatic handle assembly (408-6789), or the
bench-mount power assembly (408-9393).
3. REQUIREMENTS
3.1. Wire
A. Wire Selection
The contacts will accept wire sizes 18, 20, and 22 AWG tin-plated solid, concentric fused stranded, and
concentric stranded wire with standard PVC thermoplastic insulation having a maximum insulation diameter
as indicated in Figure 2.
Underwriters Laboratories (UL) style No. 1061 and No. 1007 discreet wires are approved in 18 AWG (7, 16,
and 19 stranded), 20 AWG (7, 10, and 19 stranded), and 22 AWG (7 and 19 stranded).
Refer to Figure 2 for connector assembly and wire size compatibility.
CONNECTOR ASSEMBLY
PART NUMBER
644329
644370
644371
WIRE
SIZE (AWG)
18
20
22
Figure 2
2.41 [.095]
1.78 [.070]
INSULATION DIAMETER (Max)
INDIVIDUAL TERMINATION
MASS TERMINATION
B. Wire Preparation
The contacts feature insulation displacement terminating slots which do not require any wire preparation.
3.2. Contact
A. Termination Requirements
After termination, wire shall meet the requirements specified in Figure 3.
1.52 [.060]
Conductor
2.41+0.46/-0.13
[.095+.018/-.005]
Centerline of
Conductor
Figure 3
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B. Contact Damage
There shall be no evidence of physical damage or distortion to any portion of the contact.
C. Broken Strands
There shall be no broken strands in the conductor.
D. Exposed Conductor
Exposed conductors shall not exceed the limits specified in Figure 4.
Top of Contact
Bare Wires Shall Not be Visible
Beyond Back of Housing
Bare Wires Shall Not Extend
Above Top of Contact
Back of Housing
Figure 4
E. Conductor Insulation
Conductor insulation shall be contained within the confines of the insulation strain relief as indicated in
Figure 5.
Insulation Strain Relief
Conductor Insulation
Figure 5
3.3. Housing
A. Housing Damage
There shall be no cracks, breaks, or other visible damage to the housing due to wire termination.
B. Skiving
Peeling of plastic on the inside wall of the housing cavity is permissible provided that conditions specified in
Paragraph 3.3.A are met.
4. QUALIFICATIONS
No qualifying support was given for MTA .156 Quad connectors at the time of publication of this document.
5. TOOLING
No tooling is required for the application of this product.
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6. VISUAL AID
The illustration below shows a typical application of this product. This illustration should be used by production
personnel to ensure a correctly applied product. Applications which DO NOT appear correct should be inspected
using the information in the preceding pages of this specification and in the instructional material shipped with
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