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1 ScopeThis European Standard specifies the characteristics of hermetic jam-nut mounted receptacles in thefamily of circular electrical connectors coupled by threaded ring.It applies to the class defined in Table 4.For plugs and protective covers, see EN 2997-008 and EN 2997-009 respectively. For spare jam-nuts andO-rings, see EN 2997-012 and EN 2997-013 respectively.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application. For dated references, only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies.EN 2997-001, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 001: Technical specificationEN 2997-002, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 002: Specification of performance and contact arrangementsEN 2997-008, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 008: Plug — Product standardEN 2997-009, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 009: Protective cover for receptacle — Product standardEN 2997-012, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 012: Jam-nut for jam-nut receptacles — Product standardEN 2997-013, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistantor non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak —Part 013: O-ring seal for jam-nut receptacles — Product standardISO 263, ISO inch screw threads — General plan and selection for screws, bolts and nuts — Diameter range0,06 to 6 in3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN 2997-001 apply.

6 MarkingUnless there are other specific contractual requirements, the marking shall include:— the identity block as defined in Clause 5;— the date of manufacture (year, week);— the manufacturer's name or trade mark.7 Technical specificationSee EN 2997-001.