NCMFA1:   Indicates #1 shank length of L.040 ± .003. For sheet thickness up to .050 with practical flushness for thickness as low as .030.

 

NCFMA2:   Indicates #2 shank length of L.060 ± .003. For sheet thickness of  .050 or heavier.

 

Applications:

Type NCFMA parts are particularly suited for use in applications involving installations in thin aluminum or soft steel sheets or plates having small mounting areas making the use of a miniature fixed type nut desirable. The adaptability of NCFMA's two shank lengths to many sheet thickness is also worthy of note since it minimizes nut stocking requirements for numerous applications.

 

MATERIAL:

STEEL

STAINLESS STEEL, AISI 303 OR EQUIV.

 

FINISH:

STEEL - CADMIUM PLATE

STAINLESS STEEL - UNPLATED

 

LOCKING INSERT:     BLACK NYLON (350°F MAX PERFORMANCE)

 

For optimum installation it is recommended that the proper tools be used, and that the maximum tabulated clinching pressures not be exceeded. Exceeding these values can, depending upon the material into which the nut is installed, cause distortion of the work and/or the nut itself.

 

The most satisfactory installations are obtained when the nut is pressed into the work until its shoulder rests against the surface of the work. The shank should then be flared.

 

It is recommended that the acting surface of the punch face be maintained. Both the punch and the dolly should be regularly inspected and cleaned of any plating build-up in order to assure porper seating of the nut.

 

Flush mounting punches are intended for use with No. 1 shank length parts in .030-.040" thick sheet and No. 2 shank length parts in .050-.060" thick sheet. For sheet thickness .040"-.050", it is recommended that No. 1 shank length parts be used with internal flaring punches and for thicknesses greater than .060", No. 2 shank length parts be used with internal flaring punches.