Volume 1 of 2
MIL-HDBK-162A
APPENDIX A
15 December 1965
EXPLANATION OF THE NAVY TYPE DESIGNATION SYSTEM (cont'd)
Class No.
Material
10
Miscellaneous: To be used when a definite class is not available.
14
Special RF Devices (Not covered by any other classification). (Electronic switching, etc.)
18
Prime Movers and Accessories: All types except electrical.
19
Batteries: All types; parts and accessories.
20
Rectifier Power Units - Voltage Regulators - Copper Oxide Rectifiers: All types. A20 crystal detectors.
21
Motors - Generators - Synamotors - Motor Generators - Rotary Converters, etc. Motor controllers.
22
Instruments - Electrical Indicating and Recording.
23
Control Panels and Control Units. (Except motor controllers).
24
Switches: Manually operated.
25
Shields and Shielding Mater1Al: Finishes.
26
Keys - Telegraph: Manually operated.
28
Protective Devices: Static types.
29
Electromagnetic Contact Devices: All types.
30
Transformers and Reactors: Power and audio.
35
Oscillators - Complete Units (Audio or RF).
36
Ranging Equipment - Radio (Localizer, rotating beacons, etc.)
38
Vacuum Tubes - Photo - Electric Cells: AUl types.
40
Piezo - Electric Crystals and Holders - Thermometers and Thermostats.
41
Compensators - Underwater Sound.
43
Transmitter - Receiver Units (Combined): Equipment in which the transmitter and receiver are not separable as units.
46
Receiver Units and Converters (RF to IF, etc) - Radio and Sound.
47
RF Transformers - Inductors - Chokes.
48
Capacitors: All types.
49
Head Telephones - Telephone Cords - Patch Cords - Loudspeakers - Plugs - Jacks - Sockets - Receptacles: All types.
50
Amplifier, Modulator and Coupler Units - Electronic Converters - Mixing Panels: All types (Complete diplex and duplex
units.) See 14 for electronic switching.
51
Microphones - Hydrophones - Underwater Sound Electrical Pickup Devices - Combination Handsets: All types.
52
Radio Transmitter Units: includes RF drivers for underwater sound equipment, etc.
53
Filter Units: All electrical types.
54
Sound Receiving Devices - Acoustical.
55
Indicators and Recorders: Radio, radar and underwater sound. (Indicating instruments under class 22.)
56
Wave Propagation.
59
Television - Photo - Radio.
60
Test Equipment (Integral instruments under Class 22.) A60 Training Equipment (Operator trainers and instruction
devices.)
61
Insulators and Insulating Mater1Al: Phenolic and ceramic.
62
Wires and Conductors - Junction Boxes. A62 RF Transmission lines and RF cables, etc.
63
Resistors: All types.
64
Static Recorders and Eliminators.
65
Remote Control Systems by Wire: Repeater systems, etc.
66
67
Automatic Systems, Facsimile, Tele-Automatic: Automatic keyers and recorders.
68
Secrecy Systems: Sending and receiving. (Speech scrambling.)
69
Direction Finding Equipment: Radio.
70
Distance Finding: A70 Radio Altimeters.
72
Portable Equipment - Field Sets.
73
Combined Gas Engine Generator Sets.
74
Precision Calibration and Measuring Equipment.
75
Standards: (Including standardization notices, etc).
78
HF Underwater Sound Projector (above 10 kc) and supporting parts.
1A-12
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