SKU: 4100

The 4100 series spherical metal grommet firewall fitting has a 1 inch steel ball held in place by 1 4130 steel pressure plate.   It requires only one hole in the firewall and has a swivel angle up to 50 degrees from straight. It is held onto the firewall with one 1 5/16 steel nut and stainless steel washer. This fitting is for a composite firewall and the body has a reach of 0.500. Assembly weighs only 1.8oz-2.6oz (.11lb-.16lb) depending on ball hole size.

Meets FAR 23.1191 and AC 20.135 requirements.

Additional information

Weight .09 oz
Hole Size

0.125, 0.188, 0.240, 0.250, 0.260, 0.312, 0.330, 0.375, 0.438, 0.500, 0.750

Grip Length

0.500, 0.750, 1.000


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