Ideal when components are fastened from the opposite side of the panel. Snap-in grommet covers the screw point with an attractive, decorative head.

pf18-1b

PART NUMBER TYPE PANEL HOLE SIZE* PANEL THICKNESS RANGE SCREW SIZE HEAD SIZE
A		 HEAD HEIGHT
B		 PRONG LENGTH
C
212-320602-01 R .250 x .343 .040-.060 8 .485-.515 .085-.105 .377-.397
212-320334-00 R .312 x .343 .062-.092 8 .485-.515 .095-.105 .505-.525
*See panel hole size recommendations below.
NOTE: Dimensions listed are nominal.

Test Data (Representative Samples)

PART NUMBER SCREW SIZE DRIVING TORQUE† STRIPPING TORQUE†
242-160502-70 6 2-4 in.-lh. 10-15 in.-lh.
8 4-6 in.-lh. 14-21 in.-lh.
242-170602-80 8 3-5 in.-lh. 11-17 in.-lh.
242-180602-90 8 3-5 in.-lh. 10-18 in.-lh.
10 5-8 in.-lh. 16-28 in.-lh.
242-180602-91 8 4-6 in.-lh. 13-21 in.-lh.
10 6-9 in.-lh. 20-30 in.-lh.
PART NUMBER SCREW SIZE DRIVING TORQUE† STRIPPING TORQUE†
242-180602-92 8 5-7 in.-lh. 15-22 in.-lh.
10 8-10 in.-lh. 25-30 in.-lh.
242-180602-93 8 7-9 in.-lh. 22-28 in.-lh.
10 9-14 in.-lh. 30-45 in.-lh.
242-210602-10 1/4″ 12-17 in.-lh. 30-45 in.-lh.

*Note–When Installing Grommets:

  1. It is desirable that the burr side of the hole be opposite the grommet entry.
     
  2. The surface condition of the hole edge has a definite bearing on the ease with which a grommet can be inserted and how well it will fit and hold until the screw is driven. For instance, the smaller end of the hole size range, when used with a porcelainized surface, can provide a leak proof fit. Indicated hole sizes are final, i.e.: after painting, enameling, etc. For hole sizes that will provide the best combinations of easy installation and secure fit, the following can serve as a general guide:

    Surface Condition Hole Size
    Porcelain: Small end of indicated range
    Enamel: Slightly below mid range
    Paint: Middle of indicated range
    Plastic Panel: Middle of indicated range
    Raw Metal: Large end of indicated range
     
  3. Driving torque and stripping torque will generally increase with decreasing hole sizes and increasing panel thickness.
NOTE: †Driving and stripping torques will vary depending on panel hole size, panel thickness, and screw type used. In all cases, however, the stripping torque is  at least 250% of the driving torque.
NOTE: Dimensions listed are nominal.