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How To Measure
 
Button length is easily calculated by adding the thickness of the material
total including the weld plate, plus the spring height, as shown in the
diagram below.

  HOW TO MEASURE YOUR PANEL FASTENER

Material thickness range for different spring heights & button grip length
Button grip length: 
0.4
0.45
0.5
0.55
0.6
0.65
1”spring (recommended deflection .023” - .056”) 
Spring Height #S5200  .223 - .258  .273 - .308  .323 - .358  .373 - .408  .425 - .458  .473 - .508 
Spring Height #S5225  .198 - .233  .248 - .283  .298 - .333  .348 - .383  .398 - .433  .448 - .483 
Spring Height #S5250  .173 - .208  .223 - .258  .273 - .308  .323 - .358  .373 - .408  .423 - .458 
Spring Height #S5275  .148 - .183  .198 - .233  .248 - .283  .298 - .333  .348 - .383  .398 - .433 
Spring Height #S5300  .123 - .158  .173 - .208  .223 - .258  .273 - .308  .323 - .358  .373 - .408 
Spring Height #S5325  .098 - .133  .148 - .183  .198 - .233  .248 - .283  .298 - .333  .348 - .383 
Spring Height #S5350  .073 - .108  .123 - .158  .173 - .208  .223 - .258  .273 - .308  .323 - .358 
Spring Height #S5375  .048 - .083  .098 - .133  .148 - .183  .198 - .233  .248 - .283  .298 - .333 
1 3/8”spring (recommended deflection .030” - .073”) 
Spring Height #S6275  .155 - .198  .205 - .248  .255 - .298  .305 - .348  .355 - .398  .405 - .448 
Spring Height #S6300  .130 - .173  .180 - .223  .230 - .273  .280 - .323  .330 - .373  .380 - .423 
Spring Height #S6325  .105 - .148  .155 - .198  .205 - .248  .255 - .298  .305 - .348  .355 - .398 
Spring Height #S6350  .080 - .123  .130 - .173  .180 - .223  .230 - .273  .280 - .323  .330 - .373 
Spring Height #S6375  .055 - .098  .105 - .148  .155 - .198  .205 - .248  .255 - .298  .305 - .348 
Spring Height #S6400  .030 - .073  .080 - .123  .130 - .173  .180 - .223  .230 - .273  .280 - .323 
Spring Height #S6425  .005 - .048  .055 - .098  .105 - .148  .155 - .198  .205 - .248  .255 - .298