Liquid Tight, with Integral Sealing Ring
Hex Head with Slot

• Integral sealing ring ensures a superior seal at mounting hole location, every time.
• IP 68 Rated.
• Provide a liquid-tight seal up to 70 psi.
• Threaded plugs for hydraulic and pneumatic applications.
• Seal threaded openings and protect against contamination and moisture.
• Lower cost option over brass or steel plugs.
• Non-corrosive—resist salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents.
• Resist oil and heat up to 221°F (105°C).
• Approximate Head Thickness: .21" (5,3 mm). Thickness may vary.
• Hex shaped head with slot for wrench or screwdriver installation.
• Electrically non-conductive Nylon 6/6.

QuickSpecs

THREAD TYPE/SIZE	PART NO.		DESCRIPTION	PART DIMENSIONS				CAD
	Black	Gray		A Wrenching Flats		B Overall Length
				in.	mm.	in.	mm.
NPT
NPT 1/4	3544B	3544	LTTP NPT 1/4	.63	16,0	.66	16,8
NPT 3/8	3545B	3545	LTTP NPT 3/8	.83	21,0	.69	17,5
NPT 1/2	3546B	3546	LTTP NPT 1/2	.98	24,9	.81	20,6
NPT 3/4	3547B	3547	LTTP NPT 3/4	1.29	32,8	.86	21,8
NPT 1	3548B	3548	LTTP NPT 1	1.74	44,2	1.05	26,7
NPT 1-1/4	3549B	3549	LTTP NPT 1-1/4	2.06	52,3	1.08	27,4
PG*
PG 7	3574B	3574	LTTP PG 7	.63	16,0	.53	13,5
PG 9	3575B	3575	LTTP PG 9	.83	21,0	.53	13,5
PG 13.5	3576B	3576	LTTP PG 13.5	.98	24,9	.62	15,8
PG 21	3401B	3401	LTTP PG 21	1.29	32,8	.68	17,3
PG 29	3578B	3578	LTTP PG 29	1.74	44,2	.87	22,1
PG 36	3579B	3579	LTTP PG 36	2.06	52,3	.78	19,8
Metric
M12	3582B	3582	LTTP M12	.63	16,0	.53	13,5
M16	3583B	3583	LTTP M16	.83	21,1	.53	13,5
M20	3584B	3584	LTTP M20	.98	24,9	.62	15,8
M32	3586B	3586	LTTP M32	1.74	44,2	.87	22,1
M40	3587B	3587	LTTP M40	2.06	52,3	.78	19,8

Standard color black. Consult Heyco for other colors.
*PG Thread Specifications.