{"id":73,"date":"2026-09-05T12:30:00","date_gmt":"2026-09-05T10:30:00","guid":{"rendered":"https:\/\/www.matai.cz\/blog\/?p=73"},"modified":"2026-08-31T17:20:00","modified_gmt":"2026-08-31T15:20:00","slug":"din-916-cervik-vnitrni-sestihran","status":"publish","type":"post","link":"https:\/\/www.matai.cz\/blog\/din-916-cervik-vnitrni-sestihran\/","title":{"rendered":"DIN 916 stav\u011bc\u00ed \u0161roub (\u010derv\u00edk) s d\u016flkem: aretace h\u0159\u00eddel\u00ed"},"content":{"rendered":"

Stav\u011bc\u00ed \u0161roub podle DIN 916<\/strong> \u2013 v d\u00edlensk\u00e9 hant\u00fdrce \u201e\u010derv\u00edk“ \u2013 je bezhlav\u00fd, pln\u011b z\u00e1vitov\u00fd spojovac\u00ed prvek s vnit\u0159n\u00edm \u0161estihranem (imbusem) na jednom konci a charakteristick\u00fdm d\u016flkem (cup point)<\/strong> na konci druh\u00e9m. Slou\u017e\u00ed k aretaci n\u00e1boj\u016f, \u0159emenic, ozuben\u00fdch kol, obj\u00edmek a p\u00e1k na hladk\u00fdch h\u0159\u00eddel\u00edch, tedy v\u0161ude tam, kde pot\u0159ebujete p\u0159en\u00e9st kroutic\u00ed moment nebo axi\u00e1ln\u00ed polohu bez prokl\u00e1dan\u00e9ho pera \u010di kol\u00edku. Mezin\u00e1rodn\u00edm ekvivalentem normy je ISO 4029<\/strong>, se kterou se na v\u00fdkresech i v kataloz\u00edch setk\u00e1te st\u00e1le \u010dast\u011bji.<\/p>\n

Tento v\u00fdklad shrnuje, co DIN 916 definuje, jak\u00e9 rozm\u011bry a jakosti jsou b\u011b\u017en\u011b skladem a kdy d\u00e1v\u00e1 smysl s\u00e1hnout pr\u00e1v\u011b po proveden\u00ed s d\u016flkem oproti dal\u0161\u00edm hrot\u016fm \u0159ady DIN 913\u2013915.<\/p>\n

Co norma DIN 916 popisuje<\/h2>\n

DIN 916 specifikuje hexagon socket set screw with cup point<\/strong> \u2013 stav\u011bc\u00ed \u0161roub bez hlavy, kter\u00fd se utahuje vnit\u0159n\u00edm \u0161estihranem (imbusov\u00fdm kl\u00ed\u010dem nebo bitem). Prvek je pln\u011b z\u00e1vitov\u00fd po cel\u00e9 d\u00e9lce a nem\u00e1 \u017e\u00e1dnou hlavu p\u0159esahuj\u00edc\u00ed jmenovit\u00fd pr\u016fm\u011br z\u00e1vitu, tak\u017ee po za\u0161roubov\u00e1n\u00ed z\u016fstane zcela utopen\u00fd v d\u00ed\u0159e n\u00e1boje. To je d\u016fle\u017eit\u00e9 jak z bezpe\u010dnostn\u00edho hlediska (\u017e\u00e1dn\u00fd vy\u010dn\u00edvaj\u00edc\u00ed d\u00edl na rotuj\u00edc\u00ed sou\u010d\u00e1sti), tak esteticky.<\/p>\n

Funk\u010dn\u00edm prvkem je kruhov\u00fd d\u016flek s ostrou hranou<\/strong> na \u010dele. Hrana se p\u0159i dota\u017een\u00ed zakousne do povrchu h\u0159\u00eddele a vytvo\u0159\u00ed otisk, kter\u00fd br\u00e1n\u00ed pooto\u010den\u00ed i axi\u00e1ln\u00edmu posuvu. D\u00edky tomu dr\u017e\u00ed \u010derv\u00edk s d\u016flkem spolehliv\u011b jak proti rotaci, tak proti vysunut\u00ed, a je proto nejuniverz\u00e1ln\u011bj\u0161\u00edm a nej\u010dast\u011bji pou\u017e\u00edvan\u00fdm proveden\u00edm stav\u011bc\u00edho \u0161roubu.<\/p>\n

Rozm\u011bry a vnit\u0159n\u00ed \u0161estihran<\/h2>\n

DIN 916 se vyr\u00e1b\u00ed v \u0161irok\u00e9m rozsahu jmenovit\u00fdch pr\u016fm\u011br\u016f (b\u011b\u017en\u011b od cca M1,4 do M24, ve speci\u00e1lech a\u017e M30) a v d\u00e9lk\u00e1ch od jednotek milimetr\u016f po des\u00edtky milimetr\u016f. Z\u00e1vit je metrick\u00fd, standardn\u011b v toleranci 6g<\/strong>. Pro praktickou mont\u00e1\u017e je kl\u00ed\u010dov\u00e1 velikost vnit\u0159n\u00edho \u0161estihranu (rozm\u011br s<\/em> = otvor kl\u00ed\u010de), kter\u00e1 je u set screws men\u0161\u00ed ne\u017e u b\u011b\u017en\u00fdch imbusov\u00fdch \u0161roub\u016f DIN 912.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Z\u00e1vit<\/th>\nVnit\u0159n\u00ed \u0161estihran s (otvor kl\u00ed\u010de)<\/th>\n<\/tr>\n<\/thead>\n
M3<\/td>\n1,5 mm<\/td>\n<\/tr>\n
M4<\/td>\n2,0 mm<\/td>\n<\/tr>\n
M5<\/td>\n2,5 mm<\/td>\n<\/tr>\n
M6<\/td>\n3,0 mm<\/td>\n<\/tr>\n
M8<\/td>\n4,0 mm<\/td>\n<\/tr>\n
M10<\/td>\n5,0 mm<\/td>\n<\/tr>\n
M12<\/td>\n6,0 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Hodnoty otvoru kl\u00ed\u010de plat\u00ed shodn\u011b i pro ostatn\u00ed stav\u011bc\u00ed \u0161rouby \u0159ady (DIN 913\/914\/915), tak\u017ee jeden set imbusov\u00fdch kl\u00ed\u010d\u016f \u010di bit\u016f pokryje v\u0161echny typy hrot\u016f. Konkr\u00e9tn\u00ed pr\u016fm\u011br d\u016flku, hloubku \u0161estihranu a dostupn\u00e9 d\u00e9lky v jednotliv\u00fdch dimenz\u00edch v\u017edy ov\u011b\u0159te v aktu\u00e1ln\u00edm rozm\u011brov\u00e9m listu dan\u00e9 normy nebo u dodavatele, proto\u017ee se mezi v\u00fdrobci v detailu li\u0161\u00ed.<\/p>\n

Materi\u00e1ly a jakosti<\/h2>\n

DIN 916 je dostupn\u00fd ve dvou z\u00e1kladn\u00edch materi\u00e1lov\u00fdch lini\u00edch:<\/p>\n