1、FORD WORLDWIDE FASTENER STANDARDDate: 1996-07-01Engineering Standards & 1 of 2 Printed copies are uncontrolled .Systems Engineering (ESSE)WG 951General Specifications for Semi-Tubular Rivets1. MATERIAL. Steel per Ford Specification WSD-M1A283-B1 through WSD-M1A283-B3.2. HEADS. The bearing surface of
2、 oval, flat, and truss rivets shall be at right angles to the axis of the rivetshank within 2 degrees. Heads of all tubular rivets shall not be eccentric with the shank beyond atolerance of 3% of the maximum head diameter.3. LIMITS. Allowable variation on dimensions controlling finished surfaces is
3、plus or minus 0.25 mmunless otherwise specified.4. UNDERHEAD FILLETS. Rivets, other than countersunk type, shall be furnished with a definite filletunder the head, but radius of fillet shall not exceed the values specified in the dimensional tables.5. LENGTH. Length Increments and Length T olerances
4、 shall be as specified in the following table.Table 1.Dimensions in mmTolerance on LengthMinimumFor Nominal LengthsNominalSizeMaximumUnderheadRadiusLengthIncrementRivetLengthUp to andincluding 4times shankdiameterOver 4 timesshankdiameter andup to andincluding 8times shankdiameterOver 8 timesshank d
5、iameter1.6 0.2 0.4 1.75 +/- 0.18 +/- 0.20 +/- 0.252.0 0.3 0.4 2.00 +/- 0.18 +/- 0.20 +/- 0.252.5 0.3 0.4 2.00 +/- 0.18 +/- 0.20 +/- 0.253.0 0.4 0.4 2.50 +/- 0.18 +/- 0.25 +/- 0.383.5 0.5 0.8 3.00 +/- 0.25 +/- 0.30 +/- 0.384.0 0.6 0.8 3.50 +/- 0.25 +/- 0.30 +/- 0.385.0 0.6 0.8 3.00 +/- 0.25 +/- 0.30
6、/- 0.386.0 0.6 1.6 5.00 +/- 0.25 +/- 0.38 +/- 0.507.0 0.75 1.6 5.50 +/- 0.25 +/- 0.38 +/- 0.508.0 0.75 1.6 6.00 +/- 0.25 +/- 0.38 +/- 0.50A slight taper resulting from extrusion of the hollow section is permissible on tubular rivets.FORD WORLDWIDE FASTENER STANDARDDate: 1996-07-01Engineering Standa
7、rds & 2 of 2 Printed copies are uncontrolled .Systems Engineering (ESSE)WG 951General Specifications for Semi-Tubular Rivets6. HOLE DEPTH. The tolerance on hole depth shall be the same as the tolerance on the length of the rivet.7. DEFECTS. The finished rivet and irregularities shall not be such tha
8、t usability of the rivet is impaired. Rivets shall be free from surface seams, splits, and all other defects that might affect their serviceability.8. ASSEMBLY CONSIDERATIONS. The approximate length for tubular rivets should be determined byadding the total compressed thickness of the work to be ass
9、embled to the approximate clinch allowancefrom the following table. If the length so determined does not conform to the length increments specified,the next longer length should be used. Recommended hole sizes and clinch allowances for tubular rivetsare given in the following table.T - Thickness to
10、be riveted.L - Rivet Length.H - Allowance for clinching.G - Work hole diameter.Table 2. - Recommended Clinch Allowances and Hole Sizes for Semi-Tubular RivetsDimensions in mmNominal Size Clinch Allowance Hole Size Diameter *1.6 0.88 1.752.0 1.10 2.192.5 1.50 2.733.0 1.80 3.273.5 2.10 3.814.0 2.40 4.
11、375.0 3.25 5.446.0 3.90 6.537.0 4.55 7.608.0 5.20 8.67* Optimum Hole Size based upon 107% of the maximum shank diameter.NOTES: The above information is intended for guidance only and the rivet length and hole sizerequired to provide optimum assembly conditions for a particular application can best bedetermined by experiment.
