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| Facciata (f) | Fassade (f) | Facade | Façade (f) | Fachada (f) | |
| Faggio (m) | Buche (f) / Buchenholz (nt) | Beech | Hêtre (m) | Haya (f) | |
| Fascia (f) | Faszie (f) | Fascia | Fascia (m) | Fascia (f) | |
| Fascicolo (m) | Fasche (f) | Fasche / Fascicle | Fascicule (m) | Fascículo (m) | |
| Feldspato (m) | Feldspat (m) | Feldspar | Feldspath (m) | Feldespato (m) | |
| Feldspato potassico (m) | Alkalifeldspat (m) | Alkali feldpsar | Feldspath potassique (m) | Feldspato alcalino (m) | |
| Fermaglio per tubo (m) | Rohrschelle (f) | Pipe strip/clamp/bracket | Collier pour tuyau (m) / Collier de serrage (m) | Abrazadera de tubo (f) / Abrazadera para tubos (f) | |
| Ferri da stiro (m) | Armierungseisen (nt) | Reinforcment iron/bar | Fer de renfort (m) | Hierros de refuerzo (m) | |
| Ferro (m) | Eisen (nt) | Iron | Fer (m) | Hierro (m) | |
| Ferroviario (m) | Geländer (nt) | Balustrade / Rail / Hand rail / Railing | Balustrade (f) / Rampe (f) | Barandilla (f) / Pasamano (m) | |
| Fessure (f.pl) / Crepa dell'attaccatura dei capelli | Haarriss (m) | Hairline crack / Hairline fracture | Fissure capillaire (f) / Fendilles (f.pl) | Fisura delgada (f) / Fisura muy fina (f) | |
| Festone (m) | Feston (m) / Girlande (f) | Festoon | Feston (m) | Festón (m) | |
| Fibra (f) | Faser (f) | Fibre | Fibre (f) | Fibra (f) | |
| Fibra di legno (f) | Holzfaser (f) | Wood fibre | Fibre de bois (f) | Fibra de madera (f) | |
| Fibra di vetro (f) / Vetroresina | Glasfaser (f) | Fibre glass / Glass fibre / Fiberglass / Fibre optic | Fibre de verre (f) / Fibre optique (f) | Fibra de vidrio (f) / Fibra óptica (f) | |
| Fibrocemento | Faserbeton (m) | Fibre concrete | Béton avec fibre (m) | Hormigón con fibras (m) | |
| Fiera specializzata (f) | Fachmesse (f) | Trade show / Trade fair | Foire commerciale (f) | Feria comercial (f) | |
| Filo a piombo (m) | Lot (nt) | Solder | Fil à plomb (m) | Plomada (f) / Plomo (m) | Lote (m) / Solda (f) / Prumo (m) |
| Fine binario | Endschiene (f) | End rail | Rail terminal (m) | Raíl terminal (f) | |
| Finestra a lancetta (f) | Lanzettfenster (nt) | Lancet window | Fenêtre de lancette (f) | Ventana de lanceta (f) | |
| Finestra ad anta ribalta (f) | Kippflügel (m) / Kippflügel Fenster (nt) | Tilt-wing window / Tilt-sash window | Fenêtre basculante (f) | Ventana basculante (f) | |
| Finestra del ventilatore | Fächerfenster (nt) | Fan window | Fenêtre du ventilateur (f) | Ventana del ventilador (f) | |
| Finestra oliva | Fensterolive (f) | Fenster olive | Olive de fenêtre (f) | Aceituna de ventana (f) | |
| Finestre girevoli | Drehflügelfenster (nt) | Pivot windows | Fenêtres pivotantes (f.pl) | Ventanas pivotantes (f.pl) | |
| Finestre incernierate | Klapp-flügelfenster (nt) | Hinged window / Hinged casement window / Casement window | Fenêtre à charnières (f) | Ventanas con bisagras (f) | |
| Finestrini | Fenster (nt) | Window | Fenêtre (f) | Ventana (f) | |
| Finitura (f) | Abschlusspolitur (f) | Finish | Finition (f) | Barniz de pulimento (m) | |
| Fiore delle crocifere | Kreuzblume (f) | Cross flower / Finial | Fleur crucifère (f) / Fleuron (m) | Floron (m) / Flor crucífera (f) | |
| Fissago (m) | Befestigung (f) | Attachment | Fixation (f) | Fijación (f) | |
| Fissativo (m) | Fixativ (nt) / Fixiermittel (nt) | Fixative | Fixatif (m) / Agent fixatif (m) | Fijador (m) / Agente de fijación (m) | |
| Flangia (f) | Flansch (m) | Flange | Brida (f) | Brida (f) | |
| Flauto (m) | Kannelierung (f) / Kannelüre (f) | Flute / Fluting | Flûte (f) / Cannelure (f) | Flauta (f) / Estria (f) | |
| Fluida (f) | Flüssigkeit (f) | Liquid / Fluid | Liquide (m) / Fluide (m) | Líquido (m) / Fluido (m) | |
| Fluorite (f) | Fluorit (nt) / Flussspat (m) | Fluorite | Fluorite (f) | Fluorita (f) | |
| Focolare | Cheminée (n) | Fireplace | Cheminée (f) | Chimenea (f) | |
| Fodera (f) | Futter (nt) | Lining | Doublure (f) | Forro (m) | |
| Foglia d'angolo a coda di rondine (f) | Schwalbenschwanzeckblatt (nt) / Hakenblatt mit Weichschwanz (nt) | Half-lapped dovetail corner joint | Vantail d'angle à queue d'aronde (m) | Cola de milano hoja de la esquina (f) | |
| Foglia d'oro (f) | Blattgold (nt) | Gold leaf | Feuille d'or (f) | Hoja de oro (f) | |
| Foglio angolare liscio (m) | Glattes Eckblatt (nt) / Einfaches Blatt (nt) | Half-lap joint / Corner halving joint | Plaque d'angle lisse (f) | Plancha de esquina lisa (f) | |
| Foglio di bordo | Einfassung Blech (nt) | Edging plate / Border sheet | Feuille de bordure (f) | Hoja de borde (f) | |
| Fonderia (f) | Giesserei (f) / Gusswerk (nt) | Foundry | Fonderie (f) | Fundición (f) | |
| Fondo (m) | Grundanstrich (m) | Base coat / Base layer / Primer | Fond (m) | Imprimación (f) | |
| Formazione di bolle (f) | Blasenbildung (f) | Blistering | Formation de bulles (f) | Formación de burbujas (f) | |
| Formula (f) | Formel (f) | Formula | Formule (f) | Fórmula (f) | |
| Fregio | Fries (m) | Frieze | Frise (f) | Friso (m) | |
| Fregio | Vertikalfries (m) | Vertical frieze | Frise | Friso | |
| Fregio a soffitto | Deckenfries (m) | Ceiling frieze / Moulding | Frise de plafond (f) | Friso del techo (m) / Moldura (f) | |
| Fregio centrale a croce (m) | Mittleres Querfries (nt) | Middle cross frieze | Frise centrale en croix (f) | Friso de la cruz del medio (m) | Friso cruzado médio (m) |
| Frese | Graten (nt) | Burr | Bardanes | Rebabas | |
| Frizionare | Abreiben (v) | Abrade | Frotter | Desempolvar | |
| Fucsina | Anilinrot (nt) | Magenta | Magenta (f) | Fucsina (f) | |
| Fuga (f) / Crepa (f) / Fessura (f) | Fuge (f) | Gap / Groove / Seam / Joint / Grout line | Fugue (f) / Emboîture (f) / Joint (m) | Fuga (f) / Junta (f) | |
| Fungicida (m) | Fungizid (nt) | Fungicide | Fongicide (m) | Fungicida (m) | |
| facciata | Stirnseite | front side | front | frente | |
| fare le bolle | blasen bilden (v) | bubble (form) | former des bulles | formar burbujas | |
| feluca | Zweispitz | pick | bicorne / smille | pica / escoda | |
| finestra laterale | Seitenfenster | side window | fenêtre latérale | ventana lateral | |
| fissare | befestigen (v) | attach | attacher | sujetar | |
| fisso , Binario di guida | Führungsschiene (fest) (f) | Guide rail, fixed | Rail de guidage fixe (m) | Carril guía, fijo (m) | |
| fondo / suola | Sohle | base | semelle | planta / suela | |
| formare | ausbilden (Risse, Beulen) (v) | form | former | formar | |
| fossato | Burggraben | castle moat | fossé m. | foso del castillo | |
| fregio verticale | Vertikalfries | vertical frieze | frise verticale | cornisamento vertical | |
| fuga (f) / crepa (f) / fessura (f) | Standfuge | gap / groove | fugue (f) / emboîture (f) / joint (m) | fuga (f) / junta (f) | |
| fuga (f) / crepa (f) / fessura (f) | Sandfuge | gap / groove | fugue (f) / emboîture (f) / joint (m) | fuga (f) / junta (f) | |