TM   10-5411-205-13 Table 3-3. Rivnuts. Dash No. SM-C-563711-1 SM-C-563711-2 SM-C-563711-3 SM-C-563711-4 SM-C-563711-5 SM-C-563711-6 SM-C-563711-7 SM-C-563711-8 SM-C-563711-9 SM-C-563711-1O SM-C-563711-11 SM-C-563711-12 SM-C-563711-13 SM-C-563711-14 Part No. S25B151 S25B211 S25B451 S1OB366 S25B140 S8B106 S31B350 S31B125 S31B481 S8B201 S8B161 S25B320 S31B425 S81B350 Style Dim A 0.529 0.529 0.529 0.391 0.475 0.355 0.665 0.666 0.656 0.355 0.665 0.665 Dim D 0.332 0.332 0.332 0.250 0.332 0.221 0.413 0.413 0.413 0.221 0.221 0.332 0.413 0.413 Dim L 1.000 “ 1.062 1.312 1.094 1.000 0.687 1.032 1.187 1.562 0.687 0.687 1.187 1.531 1.437 T 1/4-20  UNC-3B 1/4-20  UNC-3B 1/4-20  UNC-3B 10-32  UNC-3B 1/4-20  UNC-3B 8-32  UNC-3B 5/16-18   UNC-3B 5/16-18   UNC-3B 5/16-18   UNC-3B 8-32  UNC-3B 8-32  UNC-3B 1/4-20  UNC-3B 5/16-18 UNC-3B 4/16-18 UNC-3B Dim C 0.058 0.062 0.062 0.058 0.062 0.062 Grip  Range .089-.151 .151-.211 .391-.451 .316-.366 .080-.140 .065-.106 .275-.350 .030-.125 .406-.481 .161-.201 .106-.161 .260-.320 .350-.425 .275-.350 (1)   Installation.   (Figure   3-9) NOTE When  installing  new  rivnut  in  same  location  as  a  rivnut  that  has been  removed,  if  diameter  of  hole  in  structure  has  been  enlarged during  removal,  use  next  larger  diameter  rivnut  for  replacement. Figure 3-9. Installing Rivnuts. 3-17