Grommet testing data

TEST DATA (REPRESENTATIVE SAMPLES)

Part Number	Screw Size	Driving Torque*	Stripping Torque*
242-160502-70	6	2-4 in.-lb.	10-15 in.-lb.
	8	4-6 in.-lb.	14-21 in.-lb.
242-170602-80	8	3-5 in.-lb.	11-17 in.-lb.
	10	5-8 in.-lb.	16-28 in.-lb.
242-180602-91	8	4-6 in.-lb.	13-21 in.-lb.
	10	6-9 in.-lb.	20-31 in.-lb.

*NOTE-WHEN INSTALLING GROMMETS:

It is desirable that the burr side of the hole be opposite the grommet entry.

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

Driving torque and stripping torque will generally increase with decreasing hole sizes and increasing panel thickness:

Part Number	Screw Size	Driving Torque†	Stripping Torque†
242-180602-92	8	5-7 in.-lb.	15-22 in.-lb.
	10	8-10 in.-lb.	25-30 in.-lb.
242-180602-93	8	7-9 in.-lb.	22-28 in.-lb.
	10	9-14 in.-lb.	30-45 in.-lb.
242-210602-10	1/4"	12-17 in.-lb.	30-45 in.-lb.

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.

ITW Fastex^®
ITW Fastex^® - U.S. 195 Algonquin Road, Des Plaines, IL 60016 Phone: 847-299-2222 Fax: 847-390-6183	ITW Fastex^® - Europe ZAC Les Echavagnes, BP 123 38 163 St. Marcellin Cedex, France Phone: 33-4-76-64-60-42 Fax: 33-4-76-64-92-97 European Product Line Available Email: sales@itwbcv.com	ITW Fastex^® - Asia A4, No.3-2 K.E.P.Z. Kaohsiung, Taiwan R.O.C. Phone: 886-7-811-9206-10 Fax: 886-7-811-1795 / 811-0332

Appendix

SCREW GROMMETS

Appendix