A-A-52525 Horns And Buzzers, Air-And Electrically-ActuatedThis CID covers horns and buzzers used in 12- or 24-volt (V) direct current (dc) circuits as warning signals in tactical vehicles, combat vehicles, and other equipment operating under severe and extreme conditions of shock, vibration, and climate.

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A-A-52525A

NOTES: 1. Dimensions are in millimeters.

2. Unless otherwise specified, tolerances are + 1 mm.

3. Plate, 51 x 14 x 4 mm, steel, carbon, sheet or strip, with two 6 mm tapped holes, shall be spot welded to mounting bracket.

4. Screw, 6 mm, cap, hexagon head, 20 mm long, steel, SAE Grade 5.

5. Washer, 6 mm, lock, flat-internal tooth, carbon steel.

6. There are four bracket positions: 1, 2, 3, and 4, as indicated. The mounting bracket shall be capable of being located at any of these positions by removing the nuts and/or screws and repositioning.

7. Unless otherwise specified (see 7.2), the horn shall be furnished with mounting bracket located at position "1".

FIGURE 2. Type II horns.