ISO 3282:1976 PDF

Name: ISO 3282:1976 — Aircraft — Dimensions for single-hole and triple-hole mounting (Class 3) lever-operated manual switches
SKU: ISO 3282:1976
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Aircraft — Dimensions for single-hole and triple-hole mounting (Class 3) lever-operated manual switches

Название (английский):

ISO 3282:1976

Aircraft — Dimensions for single-hole and triple-hole mounting (Class 3) lever-operated manual switches

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 2
Дата публикации:: 1 февраля 1976 г.
Издание:: ISO IS 3282 edition 1 version 1
ICS:: 49.060

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Описание (английский):

Includes the overall dimensions, including terminal screws for switches, having the characteristics specified in ISO 3456. These dimensions shall be in accordance with figure 1 and the table. The holes in the mounting panel for fixing the switch to the panel in the case of single-hole mounting shall be as shown in figure 1a) and in the case of triple-hole mounting as shown in figure 2.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 3282:1976 specifies the mechanical dimensions and panel-drilling details for Class 3 lever‑operated manual switches used in aircraft. It defines overall switch sizes (including terminal screws), the required mounting thread and keyway features, and the panel hole patterns for single‑hole and triple‑hole mounting configurations. The standard references the switch performance characteristics given in ISO 3456 and relies on figure and table data for exact dimensional limits.

Key topics and technical requirements

Scope: Overall external dimensions and terminal screw allowances for Class 3 lever‑operated switches intended for aircraft installations.

Mounting configurations:

Single‑hole mounting: Panel holes and keyway pattern per figure 1a (washer + keyway prevent switch rotation).
Triple‑hole mounting: Body and panel pattern per figure 2 / 2a.

Thread and fastening: Switch case must present a 12 mm diameter male thread with approximately 1 mm pitch (or equivalent) at the center front face for panel fixation.

Anti‑rotation feature: A smaller locating hole (minimum Ø 3 mm) with keyway and keyway washer is specified to orient and prevent rotation of the switch body in the panel.

Pole‑size dimensional limits (from the standard table): maximum overall widths for typical pole counts - single‑pole ~19.0 mm, double‑pole ~25.9 mm, three‑pole ~35.1 mm, four‑pole ~46.0 mm (use the standard table for exact tolerances).

Lever length note: A lever length of 17.5 ± 0.8 mm is listed as acceptable but non‑preferred (see figure details).

Applications

Panel designers and avionics engineers creating instrument and control panels that accept standardized lever switches.

Switch manufacturers and suppliers producing Class 3 lever‑operated switches to fit aircraft panels and ensure interchangeability.

Maintenance, overhaul, and retrofit teams replacing or upgrading cockpit/control‑surface switches to match existing drilled panels.

Procurement and quality assurance teams verifying dimensional compliance and compatibility between switch hardware and panel cutouts.

Related standards

ISO 3456 - referenced for the performance and characteristic requirements of lever‑operated manual switches (Class 3).

Technical context: developed by ISO/TC 20 (Aircraft and space vehicles); consult ISO 3282 figures and table for exact drill templates and tolerances.

Keywords: ISO 3282, aircraft switch dimensions, single‑hole mounting, triple‑hole mounting, lever‑operated switches, panel drilling, aviation equipment standards, ISO 3456.

ISO 3282:1976 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications

Related standards

Технические детали

ISO 3456:1975

Aircraft — Lever-operated manual switches (Class 3) — Performance requirements

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