ISO-9974-3-1996.pdf

INTERNATIONAL STANDARD IS0 9974-3 First edition 1996-04-l 5 Connections for general use and fluid power - Ports and stud ends with IS0 261 threads with elastomeric or metal-to-metal sealing - Part 3: Stud ends with metal-to-metal sealing (type B) Raccordements pour applications g 1 MPa = 1 N/mm* 2) To be published. (Revision of IS0 261:1973) 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 99763:1996(E) 0 IS0 3 Definitions For the purposes of this part of IS0 9974, the defi- nitions given in IS0 5598 apply. 4 Dimensions Stud ends shall conform to the dimensions shown in figure 1 and given in table 1. Hex tolerances across flats shall be in accordance with IS0 4759-1, product grade C. 5 Requirements 5.1 Working pressure Stud ends made of low carbon steel shall be designed for use at the working pressures given in table 2. 5.2 Performance Stud ends made of low carbon steel shall meet at least the burst and impulse pressures given in table 2, when tested in accordance with clause 7. 6 Metal-to-metal sealing The machined seal edge is compressed during as- sembly. This causes damage to the sealing face of the port. Safe re-assembly is not possible. A high surface pressure shall also be obtained, otherwise leakage is possible. 7 Test methods Parts used for the cyclic endurance or burst test shall not be tested further, used or returned to stock. 7.1 Burst pressure test 7.1.1 Principle Test three samples to confirm that stud ends in ac- cordance with this part of IS0 9974 meet or exceed a ratio of 4:l between the relevant burst and working pressures. 7.1.2 Materials Test blocks shall be unplated and hardened to 45 HRC to 50 HRC (see IS0 6508). Stud ends shall be made from low carbon steel and plated. 7.1.3 Procedure 7.1.3.1 Thread lubrication For testing only, threads and contact surfaces shall be lubricated with hydraulic oil with a viscosity of VG 32 in accordance with IS0 3448 prior to the application of torque. 7.1.3.2 Stud end torque Test stud ends after application of the torques given in table 3. 7.1.3.3 Pressure rise rate During the burst test, the rate of pressure rise shall not exceed 138 MPa/min (I 380 bar/min). 7.1.4 Test report Test results and conditions shall be reported on the test data form given in annex A. 7.2 Cyclic endurance (impulse) test 7.2.1 Principle Test six samples at their respective impulse press- ures. 7.2.2 Materials Use the same materials as those given in 7.1.2. 7.2.3 Procedures 7.2.3.1 Thread lubrication Apply lubricant as specified in 7.1.3.1. 7.2.3.2 Stud end torques Apply torque as specified in 7.1.3.2. 7.2.3.3 Cycle and pressure rise rate The cycle rate shall be uniform between 0,5 Hz and 1,3 Hz and shall conform to the wave pattern shown in IS0 6803, except that the pressure rise rate shall be adjusted accordingly. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- Q IS0 IS0 9974-3:1996(E) Surface roughness in micrometres s (width across flats) Figure 1 - Stud end with metal-to-metal sealing (type B) Table 1 - Dimensions of stud ends with metal-to-metal sealing (type B) Dimensions in millimetres Thread 4 4 ho 4, 4 L5 Ls r S W (dl x f) LL series L series S series nom.1) tol.2) nom.1) tol.2) nom.1) to1.2) $2 -:,5 -:.2 f 0.2 min. + 0.3 0 M8xl 3 +0.14 0 - - - - 12 11 6.4 8 12 I,5 2 1 MlOxl 4.5 +0.18 0 4 +0.18 _ _ 0 14 13 8,4 8 14 M12x1.5 +0,18 +0,18 - - 6 0 4 0 17 16 9.7 12 17 M14x1.5 - - 7 +0,22 + 0,18 0 5 0 19 18 II,7 12 2 19 M16x1,5 g +022 - - 0 7 +0.22 0 21 20 13,7 12 22 001 3 1.2 M18x1.5 11 +027 o 8 +0,22 - - o 23 22 15,7 12 2,5 24 M20x1,53) +022 - - - - 10 o 25 24 17,7 14 27 M22x1.5 14 +027 - - o8 12 +0.27 0 27 26 19.7 14 27 M26xl,5 +0,27 - - 18 o - - M27x2 16 +027 - - - - o M33 x 2 23 +033 - - o8 20 + 0.33 0 M42 x 2 +033 +033 - - 30 o 25 o M48x2 + 0.39 - - 36 + 0.39 o 32 0 1) Maximum nominal diameter. 2) Tolerance corresponding to HI3 in accordance with IS0 286-2. 3) For measurement applications. 31 30 23,7 16 32 32 30,5 24 16 32 3 02 39 37 30 18 4 1.6 41 49 47 39 20 50 55 53 45 22 55 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9974-3:1996(E) IS0 Table 2 - Pressures for stud ends with metal-to-metal sealing (type B) Working pressure Test pressure Series Thread Burst Impulse 1) MPa (bar) MPa (bar) MPa (bar) LL M8xl 10 (100) 40 (400) 13.3 (133) MlOxl 10 (100) 40 (400) 13.3 (I 33) MlOxf 25 (250) 100 (1 000) 33,2 (332) Ml2 x 1.5 25 (250) 100 (1 000) 33.2 (332) Ml4 x 1.5 25 (250) 100 (1 000) 33,2 (332) Ml6x1.5 25 (250) 100 (I 000) 33.2 (332) M18x1,5 25 (250) 100 (1 000) 33.2 (332) L M22 x I,5 16 (160) 64 (640) 21,3 (213) M26 x I,5 16 (I 60) 64 (640) 21,3 (213) MJ3x2 10 (100) 40 (400) 13.3 (133) M42x2 10 (100) 40 (400) 13.3 (133) M b) reference to this part of IS0 9974, i.e. 9974-3; c) thread size (d, x P); d) stud end series heavy duty (S), light duty (L extra-light duty (LLII. EXAMPLE .I or Stud end IS0 9974-3 - Ml0 x I,5 S 9 Identification statement (Reference to this part of IS0 9974) Use the following statement in test reports, cata- logues and sales literature when electing to comply with this part of IS0 9974: “Stud ends with metal-to-metal sealing conform to IS0 9974-3:1996, Connections for general use and fluid power - Ports and stud ends with IS0 267 threads with elastomeric or metal-to-metal sealing - Part 3: Stud ends with metal-to-metal sealing (type 0). ” 5 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 99763:1996(E) IS0 Annex A (normative) Test data form for IS0 9974-l ports and IS0 9974-3 stud ends Stud end specifications: Manufacturer: Test facility: Stud end type: Size: . . Minimum material tensile strength: . MPa Stud end working pressure (table 2): . MPa Stud end impulse test pressure (table 2): MPa Stud end burst test pressure (table 2): MPa Qualification test assembly torque (table 3): N.m Burst test results (at least three samples burst tested) Sample No. Pressure at failure Torque Hardness Type of failure 1 MPa N.m 2 . _ MPa N.m 3 MPa N.m Cyclic endurance test results (at least six samples impulse tested) Sample No. Cycles at failure Torque Hardness Type of failure 1 . N.m 2 . N.m 3 . . _. N.m 4 . N.m 5 . _-_.- . N.m 6 . . . N.m Conclusions: . Dimensions/List any exceptions: Name (printed or typed) and signature of person certifying report: Date: . 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- Q IS0 IS0 9974-3:1996(E) Annex B (informative) Bibliography 111 121 131 I41 151 61 (71 81 91 IS0 286-2:1988, IS0 system of limits and fits - Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts. IS0 1101:1983, Technical drawings - Geometri- cal tolerancing - Tolerances of form, orientation, location and run-out - Generalities, definitions, symbols, indications on drawings. IS0 1179-l :- 31, Connections for general use and fluid power - Ports and stud ends with IS0 228-l threads with elastomeric or metal-to-metal seal- ing - Part I: Threaded ports. IS0 1179-2:-s), Connections for genera/ use and fluid power - Ports and stud ends with IS0 228- 7 threads with elastomeric or metal-to-metal seal- ing - Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type El. IS0 1179-3:-l, Connections for general use and fluid power - Ports and stud ends with IS0 228- 7 threads with elastomeric or metal-to-metal seal- ing - Part 3: Light-duty (L series1 stud ends with sealing by O-ring with retaining ring (types G and H). IS0 1179-4:- 31, Connections for genera/ use and fluid power - Ports and stud ends with IS0 228- 7 threads with elastomeric or metal-to-metal seal- ing - Pan 4: Stud ends for general use only with metal-to-metal sealing (type B). IS0 1302:1992, Technical drawings - Method of indicating surface texture on drawings. IS0 6149-1:1993, Connections for fluid power and general use - Ports and stud ends with IS0 261 threads and O-ring sealing - Part 7: Ports with O-ring seat in truncated housing. IS0 6149-2:1993, Connections for fluid power and general use - Ports and stud ends with IS0 267 threads and O-ring sealing - Part 2: Heavy-duty (S series) stud ends - Dimensions, design, test methods and requirements. lOI Ill 1121 I31 141 1151 I61 171 I81 1191 IS0 6149-3: 1993, Connections for fluid power and general use - Ports and stud ends with IS0 261 threads and O-ring sealing - Part 3: Light-duty (L series) stud ends - Dimensions, design, test methods and requirements. IS0 641 O-l :1993, Technical drawings - Screw threads and threaded parts - Part 7: General conventions. IS0 8434-l : 1994, Metallic tube connections for fluid power and general use - Part 7: 24 degree compression fittings. IS0 8434-4:1995, Metallic tube connections for fluid power and general use - Part 4: 24 degree cone connectors with O-ring weld-on nipples. IS0 9974-l :I 996, Connections for genera/ use and fluid power - Ports and stud ends with IS0 261 threads with elastomeric or metal-to- metal sealing - Part 7: Threaded ports. IS0 9974-2:1996, Connections for genera/ use and fluid power - Ports and stud ends with IS0 261 threads with elastomeric or metal-to- metal sealing - Part2: Stud ends with elasto- meric sealing (type E). IS0 11926-I :I 995, Connections for genera/ use and fluid power - Ports and stud ends with IS0 725 threads and O-ring sealing - Part I: Ports with O-ring seal in truncated housing. IS0 11926-2:1995, Connections for genera/ use and fluid power - Ports and stud ends with IS0 725 threads and O-ring sealing - Part 2: Heavy-duty IS series) stud ends. IS0 11926-3:1995, Connections for genera/ use and fluid power - Ports and stud ends with IS0 725 threads and O-ring sealing - Part 3: Light-duty (L series) stud ends. DIN 3852-l :1992, Stud ends and tapped ho/es, with metric fine pitch thread, for use with com- pression couplings, valves and screw plugs - Dimensions. 3) To be published. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9974-3: 1996m Q IS0 ICS 23.100.30 Descriptors: hydraulic fLuid power, pneumatic fluid power, fluid circuits, pipe fittings, pipe joints, standard couplings, screwed connections, stud ends, seals (stoppers), specifications, operating requirements, dimensions, tests, designation. Price based on 7 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Defense Supply Ctr/9960866100 Not for Resale, 04/24/2007 09:56:08 MDTNo reproduction or networking permitted without license from IHS -,-,-