1、 WORLDWIDE FASTENER STANDARD WM 901 2013 05 23 Printed copies are uncontrolled Copyright 2013, Ford Global Technologies, LLC Page 1 of 4 GENERAL SPECIFICATION FOR CUP PLUG 1. SCOPE This specification describes the dimensional requirements for expansion plugs. Retention and sealing is produced by mec
2、hanical interference fit between plug and bore. Anaerobic sealant is often applied to the bore before plug installation to seal surface imperfections. Alternate names for expansion plugs are: Cup plug Core plug Freeze plug 2. DIMENSIONS Plug dimensions Shall conform to each of the dimensions shown i
3、n Table 1 Diameter Measurements, d (Fig. 2) Diameter measurements shall be taken 0.5mm from the edge of the plug. The diameter is the average of four equally spaced measurements taken from the perimeter of the cup plug. Diameter measurement is before plating. After plating, diameter may be 0.024mm g
4、reater than table 1 values. Roundness Measurements Roundness is the difference between the max and min diameter measurement. Roundness must be less than 0.080mm for carbon steel and 304 stainless-steel. Roundness must be less than 0.100mm for 430 stainless-steel. Taper Angle Measurement (Fig. 3) Sha
5、ll be calculated based on diameter d and d. Diameter d shall be measured at a location equal or greater than h. The distance between measurement d and d is h. The angle is equal to inverse TAN of (d-d)/2/h Inner Radius, r Is equal to material thickness 0.5 mm. It is not necessarily mean centered and
6、 will vary among manufacture. Thickness, S Is measured in the domed portion of the plug. Gage Diameter, d d (Fig. 1) Is intended to match the installation tool. d= Min Bore Diameter 2*sNom 0.55 mm d =d5- 2 * r Nom. WORLDWIDE FASTENER STANDARD WM 901 2013 05 23 Printed copies are uncontrolled Copyrig
7、ht 2013, Ford Global Technologies, LLC Page 2 of 4 Surface Finish and Flatness, h2 Applies to the full length of h2. Rz11 max Rmax14 Traverse/evaluation length h2 Measured with 5 micron with skid less stylus This surface must not be distorted and must be free from burrs, die marks, and pits of any s
8、ize. Recommended Hole Dimensions For hole dimensions refer to Table 2 3. WORKMANSHIP Plugs shall be free from visual contaminants, all hanging burrs, loose scale and slivers that can be dislodged in use and any other defects that can affect the function of the parts. Unless otherwise specified, surf
9、ace finish on all surfaces shall be Ra 3.2 m. Figure 1 Plug Dimensions WORLDWIDE FASTENER STANDARD WM 901 2013 05 23 Printed copies are uncontrolled Copyright 2013, Ford Global Technologies, LLC Page 3 of 4 Table 1 Plug Dimensions Dimensions in mm Diameter, d h3s d d Nominal max. min. min. max. 0.08
10、 0.01 0.01 8 8.155 8.097 0.8 1.2 0.75 5.95 4.45 10 10.155 10.097 0.8 1.3 0.75 7.95 6.45 12 12.2 12.13 1.1 1.7 1 9.45 7.45 14 14.2 14.13 1.1 1.8 1 11.45 9.45 16 16.22 16.15 1.2 1.9 1 13.45 11.45 18 18.22 18.15 1.2 2.0 1 15.45 13.45 20 20.272 20.188 1.3 2.1 1 17.45 15.45 22 22.272 22.188 1.7 2.6 1.27
11、18.45 16.37 25 25.302 25.218 1.8 2.7 1.27 21.45 19.37 28 28.302 28.218 1.9 3.1 1.27 24.45 22.37 32 32.374 32.274 2.0 3.3 1.27 28.45 26.37 36 36.374 36.274 2.1 3.7 1.5 32.45 29.45 40 40.374 40.274 2.2 3.9 1.5 36.45 33.45 Figure 2 Gaging Location for Diameter, d Figure 3 Taper Measurement WORLDWIDE FA
12、STENER STANDARD WM 901 2013 05 23 Printed copies are uncontrolled Copyright 2013, Ford Global Technologies, LLC Page 4 of 4 Table 2 Hole Diameter Dimensions in mm Nominal Diameter d Max. Bore Diameter Min. Bore Diameter 8 8.036 8 10 10.036 10 12 12.043 12 14 14.043 14 16 16.043 16 18 18.043 18 20 20.052 20 22 22.052 22 25 25.052 25 28 28.052 28 32 32.062 32 36 36.062 36 40 40.062 40
