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DIN 906 Specification

Hexagon Socket Pipe Plug

DIN 906 Scope

DIN 906 Specification specifies dimensions, masses and technical delivery conditions for pipe plugs which are intended to be screwed into holes with parallel thread as specified in DIN 158-1, DIN 3858, DIN EN ISO 228-1 and DIN ISO 261.
NOTE 1 Since tightness is a function of pressure, temperature, the materials involved and the fluid with which the threaded parts are in contact, such connections cannot be assumed to be tight. Therefore, depending on the particular application, a sealant or seal ring is provided. This applies in particular where the hole has a thread as specified in DIN ISO 261.
NOTE 2 Specifications for pipe plugs for use in gas and water supply systems are given in DVGW G 600 Technische Regel für Gasinstallationen (Technical rules for gas installations) and the Technische Regeln für Trinkwasserinstallationen (TRWI) (Codes of practice for drinking water installations) as in DIN 1988-200.
NOTE 3 Pipe plugs complying with this standard are not designed to withstand specific tensile loads or pressure loads.

DIN 906 Related Standards

DIN 908 DIN 909 DIN 910 DIN 7604

DIN 906 Dimensions

Hexagon Socket Pipe Plug

Hexagon Socket Pipe Plug(ISK)
Hexagon Socket Pipe Plug (ISK)

    Key :
  • dg diameter of thread undercut at the base of the drive
  • t1 penetration depth of hexagon socket drive
  • a form of socket base at manufacturer's discretion
  • b centric elevation of ≤ 0,25 mm for d ≤ 24 mm and ≤ 0,5 mm for d > 24 mm permitted
  • c hexagon socket may be slightly rounded or countersunk to 1,2 smax
  • d dg ≤ (1,15smax) + 0,5 mm (applies to turned parts only)
  • e maximum prebore diameter for turned parts with 1,025 smax
  • f any chamfer provided on screw thread for manufacturing reasons shall be not more than 1,5P (P = pitch)
Thread It js16 Hexagon socket Hexalobular socket as in
DIN EN ISO 10664		 12 point socket as
in DIN 34824		 W min. Massa (ρ = 7,85 kg/dm3)
kg/1000 units ≈
Metric tapered external
thread as in DIN 158-1		 Whitworth pipe thread
as in DIN 3858		 eb min. s t1 min. No. t2 min. Nominal size t3 min.
(short thread) Tolerance class
2 (short thread)		 Nominal size min.c max.c
DIN 906 M6 x 1 keg - - 6 3,443 3 3,020 3,080 3,0 - - - - 1,8 0,85
DIN 906 M8 x 1 keg - - 8 4,583 4 4,020 4,095 4,0 25 2,0 N5 2,0 1,8 2,1
DIN 906 M10 x 1 keg - DIN 906 R 1/8 8 5,723 5 5,020 5,140 4,0 30 2,5 N6 2,5 1,8 3,4
DIN 906 M12 x 1,5 keg - - 10 6,863 6 6,020 6,140 5,0 40 2,7 N8 2,9 2,0 6,10
- - DIN 906 R 1/4 10 8,009 7 7,025 7,175 5,0 40 2,7 N8 2,9 2,0 7,00
DIN 906 M14 x 1,5 keg - - 10 8,009 7 7,025 7,175 5,0 45 2,9 N8 2,9 2,0 8,10
DIN 906 M16 x 1,5 keg - - 10 9,149 8 8,025 8,175 5,0 50 3,7 N10 3,7 2,0 11,0
- - DIN 906 R3/8 10 9,149 8 8,025 8,175 5,0 50 3,7 N10 3,7 2,0 12,2
DIN 906 M18 X 1,5 keg - - 10 9,149 8 8,025 8,175 5,0 50 3,7 N10 3,7 2,0 14,6
DIN 906 M20 x 1,5 keg - - 10 11,429 10 10,025 10,175 5,0 55 4,6 N12 4,6 2,0 17,6
- - DIN 906 R 1/2 10 11,429 10 10,025 10,175 5,0 55 4,6 N12 4,6 2,0 19,0
DIN 906 M22 x 1,5 keg - - 10 11,429 10 10,025 10,175 5,0 55 5,4 N14 5,4 2,0 22,0
DIN 906 M24 x 1,5 keg - - 12 13,716 12 12,032 12,212 6,0 60 6,4 N16 6,4 2,0 30,8
DIN 906 M26 X 1,5 keg - - 12 13,716 12 12,032 12,212 6,0 60 6,4 N16 6,4 2,0 38,6
- DIN 906 M27 x 2 keg DIN 906 R 3/4 12 13,716 12 12,032 12,212 6,0 60 6,4 N16 6,4 2,0 40,2
DIN 906 M30 x 1,5 keg DIN 906 M30 x 2 keg - 12 19,437 17 17,050 17,230 6,0 80 7,3 N18 7,3 2,0 44,0
- DIN 906 M33 X 2 keg DIN 906 R 12 19,437 17 17,050 17,230 6,0 80 7,3 N18 7,3 2,0 57,5
DIN 906 M36 X 1,5 keg DIN 906 M36 x 2 keg - 15 21,734 19 19,065 19,275 7,5 - - - - 3,0 85,2
DIN 906 M38 X 1,5 keg - - 15 21,734 19 19,065 19,275 7,5 - - - - 3,0 94,4
- DIN 906 M39 x 2 keg - 15 21,734 19 19,065 19,275 7,5 - - - - 3,0 103,0
DIN 906 M42 x 1,5 keg DIN 906 M42 X 2 keg DIN 906 R11/4 18 25,154 22 22,065 22,275 11,5 - - - - 3,0 135,0
DIN 906 M45 x 1,5 keg DIN 906 M45 X 2 keg - 18 25,154 22 22,065 22,275 11,5 - - - - 3,0 167,0
DIN 906 M48 x 1,5 keg DIN 906 M48 x 2 keg DIN 906 R11/2 20 27,434 24 24,065 24,275 11,5 - - - - 4,0 214,0
DIN 906 M52 X 1,5 keg DIN 906 M52 X 2 keg - 20 27,434 24 24,065 24,275 11,5 - - - - 4,0 253,0
- DIN 906 M56 X 2 keg - 22 36,571 32 32,080 32,330 13,0 - - - - 4,0 274,0
- DIN 906 M60 x 2 keg - 22 36,571 32 32,080 32,330 13,0 - - - - 4,0 350,0
  • a The values deviate slightly for hexalobular sockets and 12 point sockets
  • b emin = 1,14smin
  • c Tolerance as in DIN EN ISO 4759-1, product grade A.

Pipe Plug With Hexalobular Socket

Pipe Plug With Hexalobular Socket
Pipe Plug With Hexalobular Socket (ISR) as in DIN EN ISO 10664

    Key :
  • dg diameter of thread undercut at the base of the drive
  • t1 penetration depth of hexalobular socket drive
  • a form of socket base at manufacturer's discretion
  • b centric elevation of ≤ 0,25 mm for d ≤ 24 mm and ≤ 0,5 mm for d > 24 mm permitted
  • c hexalobular socket (ISR) may be slightly rounded or countersunk to 1,1A
  • d dg ≤ A + 0,5 mm (applies to turned parts only)
  • e maximum prebore diameter for turned parts with 1,15B
  • f any chamfer provided on screw thread for manufacturing reasons shall be not more than 1,5P (P = pitch)

Pipe Plug With 12 Point Socket

Pipe Plug With 12 Point Socket
Pipe Plug With 12 Point Socket (IVZ) as in DIN 34824

    Key :
  • dg diameter of thread undercut at the base of the drive
  • t3 penetration depth of 12 point socket drive
  • a form of socket base at manufacturer's discretion
  • b centric elevation of ≤ 0,25 mm for d ≤ 24 mm and ≤ 0,5 mm for d > 24 mm permitted
  • c dg ≤ d1 max + 0,5 mm (applies to turned parts only); with d1 max as in DIN 34824
  • d any chamfer provided on screw thread for manufacturing reasons shall be not more than 1,5P (P = pitch)

DIN 906 Technical delivery conditions

Material Steel Stainless steel Nonferrous metals
General requirements DIN ISO 8992
Thread DIN 158-1: short thread/ DIN 3858: tolerance class 2 (short thread)
Chemical composition Materialsa Free-machining steel without lead additives Cold extrusion steel A1 to A5 AL1 to AL6 CU1 to CU7
Standards DIN EN 10277, DIN EN 10263-2 DIN EN ISO 3506-1 DIN EN 28839b
Limit deviations, geometrical tolerances Product grade B
Standards DIN EN ISO 4759-1, DIN 267-2
Surface finish - Coating As processed (without coating) Phosphate coatings as specified in
DIN EN ISO 9717 Electroplating as specified in DIN EN ISO 4042
Nonelectrolytically applied zinc flake coatings as
specified in DIN EN ISO 10683		 Clean and metallically bright As processed (without coating)
Surface discontinuities DIN EN 26157-3 applies by analogy to limits for surface discontinuities.
Acceptance inspection Acceptance inspection as specified in DIN EN ISO 3269