MIL-DTL-12883/1F
Inches
mm
Inches
mm
Inches
mm
Inches
mm
.003
0.08
.062
1.57
.312
7.92
.812
20.62
.005
0.13
.065
1.65
.327
8.31
1.109
28.17
.007
0.18
.106
2.69
.379
9.63
1.375
34.93
.010
0.25
.156
3.96
.687
17.45
1.500
38.10
.023
0.58
.188
4.78
.750
19.05
1.875
47.63
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Unless otherwise specified, tolerance is ± .016 inch (0.41 mm) and + ½º on angles.
4. Eight contact cavities equally spaced, and each cavity located within ½º of true position, shall be
established along the pin circle.
5. Each contact tab shall have either:
a. 1 hole of .125 inch (2.39 mm) minimum length and .065 inch (1.65 mm) minimum width.
b. 2 wire holes of .065 inch (1.65 mm) minimum diameter.
The hole, or holes shall lie on the longitudinal centerline of the contact tab within ± .008 inch (0.20
mm).
6. Barriers and their shapes are optional. When present, barriers shall have a maximum height of
0.94 inch (2.39 mm).
7. Keyway may be square or rounded. For rounded keyways, radius shall be 0.53 inch (1.35 mm),
and blending shall be allowed at the junction of the keyway and the center hole. Center-pin hole
shall be relieved to allow the locating pin freedom to rock when a tube is withdrawn. Method of
meeting this requirement is optional.
8. Material thickness of mounting flange shall be measured in an area where burring or dishing of the
mounting hole is not present.
FIGURE 1. Socket configuration Continued.
REQUIREMENTS:
Dimensions and configurations: See figure 1, and table I.
Insulating material: Ceramic, Diallyl Ortho-Phthalate in accordance with ASTM PS 15 type, SDG-F,
GDI-30F, or mineral-filled Phenolic resin in accordance with ASTM D5948 type MFE, see table I.
Contact cavities: One shape only; D-shaped or circular, at option of the manufacturer.
Electrical:
Insulation resistance: 1,000 megohms minimum. Test pin diameter: .093 + .001 inch
(2.36 + .03 mm).
Dielectric withstanding voltage:
Sea level: Test voltage: 3,500 volts root mean square (ms). Test pin diameter .093 + .001
inch (2.36 + .03 mm).
High altitude: Test voltage: 1,000 volts rms. Test pin diameter: .093 + .001 inch
(2.36 + .03 mm).
2
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