Conduit Fittings & Accessories

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Nylon Liquid Tight Threaded Plugs

Heyco Nylon Liquid Tight Threaded Plugs provide an integral sealing ring to ensure a superior seal at the mounting hole location, every time. The IP68 plugs provide a liquid-tight seal up to 70psi and are UL rated for type NEMA 3R, 4 and 4X applications. They have a hex-shaped head with a slot for wrench or screwdriver installation and are made from electrically non-conductive Nylon 6/6. This non-corrosive material resists salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents. Heyco Nylon Liquid Tight Threaded Plugs are a cost-effective option over brass or steel NPT and PG plugs. These threaded plugs are ideal for hydraulic and pneumatic applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Product	Type	Thread Size	Material	Color
Conduit Fittings & Accessories 1/2 NPT BLACK THREADED PLUG 3546B Heyco 1: S/ 2.88 170,603In Stock	Mfr. Part # 3546B Mouser Part # 836-3546B	Heyco	Conduit Fittings & Accessories 1/2 NPT BLACK THREADED PLUG Learn More about Heyco npt pg threaded plugs	Datasheet	170,603In Stock	S/ 2.88 S/ 2.58 S/ 2.48 S/ 2.41 View S/ 2.34 S/ 2.31 S/ 2.08 S/ 1.92 S/ 1.82	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	1/2 in NPT		Black
Conduit Fittings & Accessories 1/4 NPT BLACK THREADED PLUG 3544B Heyco 1: S/ 2.80 8In Stock 1,000Expected 11/3/2026	Mfr. Part # 3544B Mouser Part # 836-3544B	Heyco	Conduit Fittings & Accessories 1/4 NPT BLACK THREADED PLUG Learn More about Heyco npt pg threaded plugs	Datasheet	8In Stock 1,000Expected 11/3/2026	S/ 2.80 S/ 2.37 S/ 2.22 S/ 2.11 View S/ 2.01 S/ 1.89 S/ 1.79 S/ 1.74	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	1/4 in NPT		Black
Conduit Fittings & Accessories 1 NPT BLACK THREADED PLUG 3548B Heyco 1: S/ 7.79 412In Stock	Mfr. Part # 3548B Mouser Part # 836-3548B	Heyco	Conduit Fittings & Accessories 1 NPT BLACK THREADED PLUG Learn More about Heyco npt pg threaded plugs	Datasheet	412In Stock	S/ 7.79 S/ 6.58 S/ 6.19 S/ 5.88 View S/ 5.61 S/ 5.45 S/ 5.29 S/ 5.06 S/ 4.90	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	1 in NPT		Black
Conduit Fittings & Accessories 3/4 NPT BLACK THREADED PLUG 3547B Heyco 1: S/ 4.32 6,683In Stock 6,000Expected 11/11/2026	Mfr. Part # 3547B Mouser Part # 836-3547B	Heyco	Conduit Fittings & Accessories 3/4 NPT BLACK THREADED PLUG Learn More about Heyco npt pg threaded plugs	Datasheet	6,683In Stock 6,000Expected 11/11/2026	S/ 4.32 S/ 3.66 S/ 3.43 S/ 3.27 View S/ 3.11 S/ 2.76 S/ 2.66 S/ 2.61 S/ 2.49	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	3/4 in NPT		Black
Conduit Fittings & Accessories LTTP PG7 BLK INTEGRAL RING 3574B Heyco 1: S/ 2.02 4,909In Stock	Mfr. Part # 3574B Mouser Part # 836-3574B	Heyco	Conduit Fittings & Accessories LTTP PG7 BLK INTEGRAL RING Learn More about Heyco npt pg threaded plugs	Datasheet	4,909In Stock	S/ 2.02 S/ 1.93 S/ 1.91 S/ 1.90 View S/ 1.88 S/ 1.87 S/ 1.60 S/ 1.57	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG7	Nylon	Black
Conduit Fittings & Accessories TP PG 7 GRAY 3405 Heyco 1: S/ 2.96 202In Stock 100Expected 11/4/2026	Mfr. Part # 3405 Mouser Part # 836-3405	Heyco	Conduit Fittings & Accessories TP PG 7 GRAY Learn More about Heyco npt pg threaded plugs	Datasheet	202In Stock 100Expected 11/4/2026	S/ 2.96 S/ 2.50 S/ 2.34 S/ 2.23 View S/ 2.15 S/ 1.99 S/ 1.93 S/ 1.87	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG7	Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG9 GRAY PG THRD PLUGS 3407 Heyco 1: S/ 3.23 1,830In Stock 100On Order	Mfr. Part # 3407 Mouser Part # 836-3407	Heyco	Conduit Fittings & Accessories TP-PG9 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	1,830In Stock 100On Order	S/ 3.23 S/ 2.71 S/ 2.54 S/ 2.42 View S/ 2.26 S/ 2.14 S/ 2.07 S/ 2.01	Min.: 1 Mult.: 1	Hole Plugs		Hole Plug		Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG13 GRAY PG THRD PLUGS 3412 Heyco 1: S/ 4.20 200In Stock	Mfr. Part # 3412 Mouser Part # 836-3412	Heyco	Conduit Fittings & Accessories TP-PG13 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	200In Stock	S/ 4.20 S/ 3.55 S/ 3.51 S/ 2.98 View S/ 2.96 S/ 2.82 S/ 2.69 S/ 2.38	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG13	Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG16 GRAY PG THRD PLUGS 3414 Heyco 1: S/ 4.24 146In Stock	Mfr. Part # 3414 Mouser Part # 836-3414	Heyco	Conduit Fittings & Accessories TP-PG16 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	146In Stock	S/ 4.24 S/ 3.97 S/ 3.37 S/ 2.92 View S/ 2.86 S/ 2.72 S/ 2.56	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG16	Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG21 GRAY PG THRD PLUGS 3416 Heyco 1: S/ 5.72 920In Stock	Mfr. Part # 3416 Mouser Part # 836-3416	Heyco	Conduit Fittings & Accessories TP-PG21 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	920In Stock	S/ 5.72 S/ 5.18 S/ 3.39 S/ 3.18	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG21	Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG29 GRAY PG THRD PLUGS 3418 Heyco 1: S/ 8.91 98In Stock	Mfr. Part # 3418 Mouser Part # 836-3418	Heyco	Conduit Fittings & Accessories TP-PG29 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	98In Stock	S/ 8.91 S/ 7.79 S/ 7.67 S/ 6.46 View S/ 6.38 S/ 6.03	Min.: 1 Mult.: 1	Hole Plugs		Hole Plug		Polystyrene (PS)	Gray
Conduit Fittings & Accessories 3/8 NPT BLACK THREADED PLUG 3545B Heyco 1: S/ 2.96 1,504In Stock	Mfr. Part # 3545B Mouser Part # 836-3545B	Heyco	Conduit Fittings & Accessories 3/8 NPT BLACK THREADED PLUG Learn More about Heyco npt pg threaded plugs	Datasheet	1,504In Stock	S/ 2.96 S/ 2.50 S/ 2.32 S/ 2.21 View S/ 2.11 S/ 1.98 S/ 1.88 S/ 1.79 S/ 1.71	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	3/8 in NPT		Black
Conduit Fittings & Accessories LTTP PG9 BLK INTEGRAL RING 3575B Heyco 1: S/ 2.96 2,681In Stock	Mfr. Part # 3575B Mouser Part # 836-3575B	Heyco	Conduit Fittings & Accessories LTTP PG9 BLK INTEGRAL RING Learn More about Heyco npt pg threaded plugs	Datasheet	2,681In Stock	S/ 2.96 S/ 2.82 S/ 1.68	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG9	Nylon	Black
Conduit Fittings & Accessories LTTP PG13.5 BLK INTEGRAL RING 3576B Heyco 1: S/ 3.81 466In Stock	Mfr. Part # 3576B Mouser Part # 836-3576B	Heyco	Conduit Fittings & Accessories LTTP PG13.5 BLK INTEGRAL RING Learn More about Heyco npt pg threaded plugs	Datasheet	466In Stock	S/ 3.81 S/ 2.54 S/ 2.41 S/ 2.12	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG13.5	Nylon	Black
Conduit Fittings & Accessories TP-PG11 GRAY PG THRD PLUGS 3402 Heyco 1: S/ 3.39 122Expected 11/4/2026	Mfr. Part # 3402 Mouser Part # 836-3402	Heyco	Conduit Fittings & Accessories TP-PG11 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	122Expected 11/4/2026	S/ 3.39 S/ 2.85 S/ 2.67 S/ 2.54 View S/ 2.46 S/ 2.41 S/ 2.27 S/ 2.19 S/ 2.12	Min.: 1 Mult.: 1	Hole Plugs	Hole Plugs	Threaded Plug	PG11	Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG36 GRAY PG THRD PLUGS 3415 Heyco 1: S/ 20.98 Non-Stocked	Mfr. Part # 3415 Mouser Part # 836-3415	Heyco	Conduit Fittings & Accessories TP-PG36 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	Non-Stocked	S/ 20.98 S/ 17.87 S/ 16.66 S/ 16.47 View S/ 15.80 S/ 15.06 S/ 14.67 S/ 14.09 S/ 13.51	Min.: 1 Mult.: 1	Hole Plugs		Hole Plug		Polystyrene (PS)	Gray
Conduit Fittings & Accessories TP-PG48 GRAY PG THRD PLUGS 3417 Heyco 1: S/ 23.28 Non-Stocked	Mfr. Part # 3417 Mouser Part # 836-3417	Heyco	Conduit Fittings & Accessories TP-PG48 GRAY PG THRD PLUGS Learn More about Heyco npt pg threaded plugs	Datasheet	Non-Stocked	S/ 23.28 S/ 19.77 S/ 18.29 S/ 17.87 View S/ 17.09 S/ 16.47 S/ 16.04 S/ 15.38 S/ 14.67	Min.: 1 Mult.: 1	Hole Plugs		Hole Plug		Polystyrene (PS)	Gray

Nylon Liquid Tight Threaded Plugs

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