1、 WORLDWIDE FASTENER STANDARDWM 920 2009 12 08 GENERAL SPECIFICATION FOR PORT PLUG 1. SCOPE This specification describes the dimensional and performance requirements of an internally driven o-ring plug intended for installation into a WM921, ISO 6149-1 or SAE J2244/1 port. The plug original applicati
2、on was to seal hydraulic pressure to 63 MPa (630 Bar). Actual performance will vary when installed into typical engine or transmission component material and when sealing fluid other than hydraulic fluid. However, it is expected that the sealing performance shall be sufficient for most engine and tr
3、ansmission applications. This plug is intended to seal engine oil, engine coolant and transmission fluids between -30 and 150C. The plug generally follows the dimensions of the ISO 6149-4 internal hex plug except: Plugs seats on the angled surface for improved sealing and anti-loosening Smaller o-ri
4、ng for better fit in the smaller groove area Different o-ring material for increased temperature range and fluid compatibility Hex size, s, increased for weight savings on larger size plugs Hex chamfer diameter increased for better bit engagement during automated assembly Hex drill diameter modified
5、 to provide relief for hex broach Identification groove is not permitted. Recommended torque is reduced because of wedging action created by the angles seat Permissible indent on pilot end for weight savings. Short pilot added to improve automated assembly. 1.1 REFERENCES ASTM D2000, Classification
6、system for rubber products in automotive applications ISO 261:1998, ISO general-purpose metric screw threads General plan ISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6149-1, Connections for fluid power and general use Ports and stud e
7、nds with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for O-ring seal ISO 6149-2, Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 2: Dimensions, design, test methods and requirements for heavy-duty
8、(S series) stud ends ISO 6149-4:2006, Connections for fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 4: Dimensions, design, test methods and requirements for external hex and internal hex port plugs. SAE J 403, Chemical compositions of SAE carbon
9、steels 2. DIMENSIONS Plug dimensions Shall conform to the dimensions shown in Table 1. Undercut and seat run-out If undercut (d5, d20) and seat angle (Z) are generated with a single tool (form, shave) run-out may be checked at single location. Printed copies are uncontrolled Copyright 2009, Ford Glo
10、bal Technologies, LLC Page 1 of 4 WORLDWIDE FASTENER STANDARDWM 920 2009 12 08 Hex dimensions Socket countersink 90 x diameter d11. Shall conform be in accordance with ISO 4759-1, product grade A Across corner dimension emin = 1.145smin Threads The screw threads shall be in accordance with ISO 261.
11、Thread class before plating may be 6e, 6f, or 6g depending on plating thickness. After coating/plating the threads shall meet the requirements of tolerance class 6h GO screw ring gage. For acceptability of thread damage after plating/coating the torque applied to the GO screw ring gage shall not exc
12、eed 0.1xd Nm. Pilot end indent Indent presence, shape and form are optional. Indent diameter shall not be greater than diameter dy. O-ring dimensions Shall conform to the dimensions shown in Table 2. 3. WORKMANSHIP Plugs shall be free from visual contaminants, all hanging burrs, loose scale and sliv
13、ers that can be dislodged in use and any other defects that can affect the function of the parts. Unless otherwise specified, surface finish on all surfaces shall be Ra 6.3 m. 4. SURFACE FINISH An electroplated finish like S437 is recommended. Dip-spin coatings are not recommended because of the pot
14、ential for hex recess fill and undercut fill for smaller plug sizes. 5. RECOMMENEDED TORQUE SPECIFICATION Recommended installation torque is shown in Table 3. Testing is recommended to validate installation torque. The torque shall be released on the engine assembly (543 or ECH) chart or component d
15、rawing or WERS. Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 4 WORLDWIDE FASTENER STANDARDWM 920 2009 12 08 Table 1 (Plug dimensions) Dimensions in mm. d11s L13L17L6L20Xd14d12d20Thread (d1xP)AZ 300.5 d5Ra 3.2 0.1 AR0.2 X L14Pitch diameter 0.1 AOptional Pilo
16、t end Indent L13dY(45) Screw threads Undercut Diameter Hex Counter-sink Hex Drill * Diameter Hex * Recess Diameter Seat Angle DiameterPilot * Recess Diameter Under-cut Length Bottom Clear-ance Hex DepthHex * Recess Length Seat Angle Length Seat Angle Hex Across Flat (d1 P) d5d11d12d14d20dYL6L13L14L1
17、7L20 s + 0.0 - 0.1 + 1.0 - 1.0 Max. + 0.25 - 0.00 + 0.17- 0.00 Max. + 0.35- 0.00 min. min. max. + 0.08 - 0.08 + 0.5 - 0.5 Min Max M8 1 6.1 6.6 4.170 4.7 8.85 3.4 1.6 3 4 2.1 1.25 12 4.020 4.095 M10 1 8.1 7.8 5.170 5.9 10.85 5.4 1.6 3 4.5 2.1 1.25 12 5.020 5.140 M12 1.5 9.7 8.9 6.170 7.0 13.55 6.7 2.
18、4 3 5.5 2.5 1.25 15 6.020 6.140 M14 1.5 11.7 11.2 8.205 9.3 15.55 8.7 2.4 3 5.5 2.5 1.5 15 8.025 8.175 M16 1.5 13.65 11.2 8.205 9.3 17.55 10.7 2.4 3 6.5 2.5 1.5 15 8.025 8.175 M18 1.5 15.65 13.5 10.205 11.6 19.55 12.7 2.4 3 6.5 2.9 1.5 15 10.025 10.175 M20 1.5 17.63 13.5 10.205 11.6 21.55 14.7 2.4 3
19、 6.5 2.9 1.5 15 10.025 10.175 M22 1.5 19.63 15.9 12.252 13.9 23.55 16.6 2.4 3 6.5 3.7 1.5 15 12.032 12.212 M27 2 24.16 18.0 14.252 16.3 29.15 20.9 3.1 3 8.5 3.7 1.5 15 14.050 14.230 M30 2 27.16 21.5 17.340 19.7 32.08 23.9 3.1 3 9 3.7 2 15 17.050 17.230 M33 2 30.16 23.8 19.405 22 35.15 26.9 3.1 3 9 3
20、.7 2 15 19.065 19.275 M42 2 39.16 29.5 24.405 27.7 44.15 35.9 3.1 3 9 3.7 2 15 24.065 24.275 M48 2 45.16 32.9 27.405 31.2 50.15 41.9 3.1 3 9 3.7 2 15 27.065 27.275 M60 2 57.16 38.6 32.490 36.9 62.15 53.8 3.1 3 10 3.7 2 15 32.080 32.330 Printed copies are uncontrolled Copyright 2009, Ford Global Tech
21、nologies, LLC Page 3 of 4 WORLDWIDE FASTENER STANDARDWM 920 2009 12 08 Table 2 (O-Ring Dimensions) Dimensions in mm Screw threads Thread O-ring size (d1 P) d8d9M8 1 5 0.15 1.5 0.08 M10 1 7 0.17 1.5 0.08 M12 1.5 9 0.18 2 0.08 M14 1.5 11 0.20 2 0.08 M16 1.5 13 0.21 2 0.08 M18 1.5 15 0.23 2 0.08 M20 1.
22、5 17 0.24 2 0.08 M22 1.5 19 0.26 2 0.08 M27 2 24 0.29 2.5 0.09 M30 2 27 0.32 2.5 0.09 M33 2 30 0.34 2.5 0.09 M42 2 39 0.40 2.5 0.09 d8d9Table 3 (Recommended Torque Specification) Screw threads Install Torque (d1 P) Nm 15 % M8 1 8 M10 1 10 M12 1.5 11 M14 1.5 15 M16 1.5 23 M18 1.5 32 M20 1.5 40 M22 1.5 48 M27 2 72 M30 2 85 M33 2 98 M42 2 136 M48 2 161 M60 2 212 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 4 of 4
