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ARTS-3A, data entry and display substem
keytop, keyboard
lexan or similar translucent material, dimensions approximate 0.688 in. wide by 1.125 in. long by 0.562 in. high, yellow color, this key cap assembly, consisting of 1 key cap, and 1 insert l plunger has black engraving, the characters to be 0.125 in. high and 0.020 in. line width, the engraved lettering shall be opaque so lettering will appear black in a darkened room key caps are internally illuminated, this key cap is style or type IJ-4224, the word asterisk clear asterisk is engraved on this key cap, p/o key module assy, texas instruments, inc., p/n 684579-2, end item, automated radar terminal system - arts iii, texas instruments, inc. p/n 729408-1, manfacturer data, george risk industries, inc. 24229 columbus, neb., p/n 2-128-004-1A; function, dey cap, "clear"; reference data 3A1A1MP1, TI-6310.8a, instruction book, arts iii data entry and display subsystem, vol ii, sec 10-11, pg 10-63
An item usually marked with letter(s), numeral(s), or other character(s) designed to be attached to a key lever of a typewriter, accounting and calculating machien, office type composing machine keyboard or keyboard, data entry for the purpose of affording fingertip operation.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Precious metal content is unknown
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.
Department of transportation federal aviation administration attn: coe aml-030 tsf bldg 215 po box 25082 oklahoma city, ok 73125-0082
SOS: Source of Supply. A three position code or routing identifier code (ric), which identifies the source of supply activity.
SMIC: Special Material Indicator Code. A two position code, which categorizes material on the basis of requirements for source or quality control, technical design or configuration control, procurement, stocking and issue control, special receipt, inspection, testing, storage, or handling.
MMAC: Material Management Aggregation Code. A two position code that identifies an item of supply to be managed by a specific activity manager.
MCC: Material Echelon Code. A two position code employed by the marine corps in classifying items into categories by materiel category and procurement echelon. the alphanumeric management code is in the first position and identifies the materiel category
IMC: Denotes wether items shall be subjected to integrated management under the defense supply agency or retained by the individual military service or other department of defense components for their management. Assigned by th activity responsible for item management coding.