Technical HandbookAb-28German DIN Hose Fittings (DIN – Deutsches Institut für Normung)Often referred to as metric fittings these fittings seal using the angled sealing surfaces (metal to metal) or the combination of metal to metal with O-rings.They are available in very light (LL), light series (L) or heavy series (S) The sealing face angles are either 24° with or without O-rings, or 24°/60° universal cones.Identification is made by measuring the thread size and also the tube outside diameter.Defined by the outside diameter and the pitch(distance between 2 crests of the thread)example: M22x1.5 - pitch of 1,5mmDIN Very Light Series (LL)The male 60° cone will mate with the female 60° cone only.The male has a 60° sealing angle (seat) and straight metric thread. The female has a 60° seat and straight metric thread.Standard DIN 20078 Part 3 1)Parker end configurations C0DIN Light (L) and Heavy Series (S) without O-ringThe male 60° cone will mate with the female universal 24° or 60° cone only.The male has a 60° sealing angle (seat) and straight metric threads. The female has a 24° and 60° universal seat and straight metric threads.Standard DIN 20078 Part 2 1) (previously known as DIN 20078 A, D & E)Parker end configurations light series: C3, C4, C5, C6(Often also referred to as “Ball nose cones”)w ithout O-ringEuropean Thread Types German DIN Hose Fittings 1) obsolete standard, no exact replacement DN Metric Ø A Ø B thread (mm) (mm) 20 M30x1.5 30,00 28,50 25 M38x1.5 38,00 36,50 32 M45x1.5 45,00 43,50 40 M52x1.5 52,00 50,50 50 M65x2 65,00 63,00Catalogue 4400/UKTechnical HandbookAb-29W/DIN 24° Light (L) and Heavy Series (S) with O-ringThe male has a 24° sealing angle cone seat wi...