MIL-DTL-28804 Connectors, Plug And Receptacle, Electric, Rectangular, High Density, Polarization Center Jackscrew, General Specification ForThis detail specification covers the general requirements for rectangular electrical connectors, with size 22, nonremovable, solder type contacts, and rear removable crimp type contacts, environment resistant and non-environment, intended for use in electronic and electrical equipment \(see 6.1 for restrictions on intended use and application\).

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19

MIL-DTL-28804D

4.7.10 Contact engagement and separation force (see 3.6.9). Sockets shall be mounted in a suitable position or fixture for

applying gradually increasing loads for the engagement and separation of test pins from the sockets. Maximum and minimum test

pins shall be in accordance with figure 3. Insertion of test pins shall be to a depth of .140 inch (3.56 mm) minimum when measured

from the front of the socket contact. The test pin shall not bottom in the socket. This test shall be performed in the following

sequence:

a. Insert and separate a maximum diameter pin in and from each socket contact, then insert and remove a minimum

diameter pin in the same sockets. During separation of the minimum diameter test pin, the minimum separation force

shall conform to 3.6.9.

b. Insert and separate a maximum diameter pin in and from each socket contact three times. During the third cycle, the

engagement shall conform to 3.6.9.

HANDLE SHOWN TYPICAL

RECOMMENDED LENGTH 1.0000

MINIMUM DIAMETER TWICE "A" MAX

STAMP GAGE WITH

M28804-# or MS 3197-#

.500 MIN

RADII SHALL BE SMOOTHLY

BLENDED INTO PIN DIAMETER

Contact

size

(dash number)

Minimum diameter

Maximum diameter

Max

flat

(-22X1)

(-22Y1)

.007

0.0305 (0.77)

0.0295 (0.75)

(0.18)

+.0000

+.0001 (0.0025 mm)

-.0001 (0.0025 mm)

-.0000

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are given for general information only.

3. Material: Gauge pin for contact size 22, tool steel or tungsten carbide.

4. Finish: 6 to 10 microinches root mean square determined in accordance with ANSI B46.1.

5. No plating.

6. These gauges are intended for use with electric connector socket contacts referenced in this document.

FIGURE 3. Test pin.

4.7.11 Thermal shock (see 3.6.10). Unmated connectors shall be tested in accordance with method 1003 of MIL-STD-1344.

Test condition letter shall be A1 except the minimum temperature shall be -55 C, +0 C, -3 C. Following the last cycle, the

connectors shall be returned to room temperature for inspection and further testing.