[[TitleIndustry]]

DIN 3852-2 vs ISO 1179-1 BSPP thread port

Date:Jun 01, 2019

DIN 3852-2 and ISO 1179-1 standards has the same points as follows:

For Stud ends and ports of fittings, valves and plug screws

BSPP parallel thread port


The difference is between  DIN 3852-2 and ISO 1179-1as follows:

ISO 1179-1: Connections for general use and fluid power — Ports and stud ends with

ISO 228-1 threads with elastomeric or metal-to-metal sealing.

ISO_1179_1 drawing

Dimensions for ISO 1179-1 ports

DIN 3852-2 standard specifies the dimensions, types and designation of stud ends for fittings, valves and plug screws (port plugs) and their ports that are not specified in DIN EN ISO 1179-1 to DIN EN ISO 1179-4.


DIN 3852-2 contains specifications for component parts with

Whitworth pipe threads as in DIN 3858.

pipe threads where pressure-tight joints are not made on the threads as in DIN EN ISO 228-1 and

DIN_3852_2_dimension_drawings

Thread d 1 a, d 2, d 3,  d 4 Type N (narrow)  Type W (wide),  b min. L 1 max. L 2 min. L 3 c min. W

G 1/8  4,5  9,8  15  17,2  1  8,5  10,5  0,1

G 1/4  7,5  13,2  20  20,7  1,5  12,5  15,5  0,1

G 3/8  9  16,7  23  24,5  2  12,5  15,5  0,1

G 1/2  14  21  28  29,6  2,5  15  19  0,1

G 3/4  18  26,5 33  36,9  2,5  16,5  20,5  0,2

G 1  23  33,3  41  46,1  2,5  19  24  0,2

G 1 1/4  30  42  51  54  2,5  21,5  26,5  0,2

G 1 1/2  36  47,9  56  60,5  2,5  22,5  27,5  0,2

G 2  d 47  59,7 69  73,28 to 73,53  3  26  31  0,2

Here is pictures of 24degree cone fitting ends to BSPP stud end fitting, with type E sealing of DIN 3852-11, tube end connection will need compression nut, cutting ring to connect hydraulic tubes.

DIN 3852-11 E stud connection to compression tube fitting end

DIN 3852-11 standard stud end usage guide

This picture shows din 3852 system fittings used in heavy duty equipment such as excavator, from hydraulic manifolds ( bspp port dimensions ) flowing in or out, need BSPP stud end fittings( form a,b,e types of DIN 3852-2 bspp fittings), metric compression fitting end to types of hydraulic tube with cutting ring connection, hose assemblie connection, swivel adapter connections.

DIN 3852-11  Form E seal stud fitting  connect to Hose assemblies, tubes

Types of Tube end connection to DIN 3852 part 2 stud fittings as follow:

From DIN Fittings

From JIC fittings

From O-ring face seal fittings

From BSPP 60 cone fitting

Oil port screw Plug

DIN 3852-11  Form E seal stud fitting guide to application

Explains the manufacturing process: 1. DIN 3853-2 G thread adaptors, with Type E DIN 3852-11 sealing groove; 2. inspction by equipment; 3. electroplating; 4. assemblied the correct ED seal. 6, show CNC automatic workshop.


The related BSPP thread port with O-ring seal standards is DIN 3852-21.

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