Steel Adapter, 9/16-18 Male JIC 37 deg Flare To 9/16-18 Male JIC 37 deg Flare, Straight Bulkhead

A 2.18	B 1.28	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 2700-LN-06-06	Thread 1 9/16-18	Thread 2 9/16-18	Thread Sealant No	Tube O.D. 0.38	Tube O.D. 0.38	Product Weight 0.14 lbs

Product Questions & Answers

What size hole do I need to drill in my panel for this fitting?

Question by: Harold W on Nov 2, 2025, 4:34 PM

The body of this bulkhead adapter is 1.28 inches in diameter, so you'll need a hole slightly larger than that to accommodate it.

Answer by: Customer Support on Nov 4, 2025, 12:05 PM

Model Number	Tube O.D.	Thread 1	Thread 2	A	B
2041-4-4S	0.25	7/16-20	7/16-20	2.07	1.2
2041-6-6S	0.38	9/16-18	9/16-18	2.18	1.28
2041-8-8S	0.5	3/4-16	3/4-16	2.44	1.44
2041-10-10S	0.63	7/8-14	7/8-14	2.74	1.58
2041-12-12S	0.75	1-1/16-12	1-1/16-12	3.09	1.75
2041-16-16S	1	1-5/16-12	1-5/16-12	3.14	1.75
2041-20-20S	1.25	1-5/8-12	1-5/8-12	3.31	1.8
2041-24-24S	1.5	1-7/8-12	1-7/8-12	3.52	1.84
2041-5-5S	0.31	1/2-20	1/2-20	2.07	1.2
2700-LN-06-06-FG	0.38	9/16-18	9/16-18	2.18	1.28