Threaded Caps & Plugs

 (24 product groups)

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Stocked in numerous threads such as Metric, BSP and UNF, our threaded caps and plugs are used across many different industries, including automotive and engineering. Manufactured in various materials such as HDPE and LDPE, our range boasts a large mix of fastening options and colors to suit your application requirements.

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37deg JIC Flared Fitting Threaded Plug

In stock In production

37 JIC Flared Fitting Threaded plugs are designed with a knurled head for easy finger installation. Used to seal light pressure requirements on 37 JIC flared fittings. Functionally equivalent to spec NAS-833, NAS-815 (MIL-C5501/1,MIL-C52078)

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Air Conditioning Chargeport Sealing Caps

In stock In production

Air Conditioning Chargeport Sealing Caps are designed for sealing either the high pressure or low pressure sides of automotive air-conditioning systems. These durable caps are made of heat stabilized glass filled nylon with a neoprene, nitrile or HNBR seal. Your choices include high side, low side, high side with hole, and valve cap. Head styles available are round, knurled round or knurled with ribs.

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Overfill Prevention Device (OPD) Tank Valve Plugs

In stock In production

Overfill Prevention Device Cylinder valve plug protects the overfill prevention device valve threads during transportation and use. This OPD Valve Plug comes with a flat strap attachment tag printed with product instructions and warning. 7/8-14 left hand threads provide a tight fit to guard against damage and contaminants.

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Snap-Fit Plugs

In stock In production

Snap-Fit plugs' design allows a single turn assembly providing a tight fit once pushed into position. The plug has a center tab to allow a strong grip for tightening and easy removal. The range is suitable for Metric, BSP and UNF threads.

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Threaded O-ring Plugs - Metric Threads

In stock In production

Threaded O-ring plugs for Metric Threads can be applied or removed by hand, hex wrench or screwdriver. The O-ring provides a watertight seal for superior leak protection.

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Threaded O-ring Plugs - NPT Threads

In stock In production

Threaded O-Ring plugs for NPT threads are used to protect NPT threaded fittings. The O-Ring gives this part a watertight seal for superior leak protection. Unique head design allows the user to apply or remove this plug by hand or with a 12-point socket head, screwdriver or wrench. Parts come in HDPE for everyday applications or in nylon, which is recommended when abrasion or heat are involved.

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Threaded O-ring Plugs - NS-NF Threads

In stock In production

Threaded O-Ring plugs for NS and NF Class 1-2-3 threads protect and keep dirt, dust or debris out of these threaded ports or fittings. Can be applied or removed by hand, hex wrench or screwdriver. The O-Ring gives this part a watertight seal for superior leak protection.

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Threaded O-ring Plugs - UNF Threads

In stock In production

Threaded O-ring plugs for UNF Threads can be applied or removed by hand, hex wrench or screwdriver. The O-ring provides a watertight seal for superior leak protection.

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Threaded Protection Caps - BSP/Gas Threads

In stock In production

BSP/Gas Threaded Protection caps are used to protect BSP/Gas threaded components from dust, dirt, moisture and damage.

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Threaded Protection Caps - Metric Threads

In stock In production

Metric Threaded Protection caps are used to protect Metric threaded components from dust, dirt, moisture and damage.

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Threaded Protection Caps - UNF/JIC Threads

In stock In production

Threaded Protection caps protect flared/flareless fittings and threaded components from dirt, dents and moisture. The threaded cap design with rolled threads allows you to push-on for easy application.

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Threaded Protection Caps - UNJ/UNJS Threads

In stock In production

Threaded Protection caps meeet UNJ and UNJS thread specifications while protecting components from dust, dirt, moisture and during production, storage or shipment. Designed with an easy grip head for ease of hand installation.

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Threaded Protection Plugs - BSP/Gas Threads

In stock In production

Threaded Protection plugs for BSP/Gas threads protect and keep dirt, dust or debris out of these threaded fittings. Knurled head design makes the part easy to assemble or remove by hand.

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Threaded Protection Plugs - Metric Threads

In stock In production

Threaded Protection plugs for Metric threads protect and keep dirt, dust or debris out of these threaded ports or fittings. Knurled head design makes the part easy to assemble or remove by hand.

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Threaded Protection Plugs - NPT Threads

In stock In production

Threaded Protection plugs for NPT threads are used to protect NPT threads against contaminants and moisture. The square head design allows the user to install or remove these by hand or with a wrench. Parts come in HDPE for everyday applications or in nylon, which is recommended when abrasion or heat are involved.

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Threaded Protection Plugs - Quick Fit

In stock In production

Quick Fit Threaded Protection plugs are suitable for UNF, BSP and Metric thread sizes. They come with a knurled head to easily grip the head and the short thread allows a quick fit on the part.

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Threaded Protection Plugs - UNF Threads

In stock In production

Threaded Protection plugs for UNF threads protect and keep dirt, dust or debris out of these threaded ports or fittings. Knurled head design makes the part easy to assemble or remove by hand.

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Threaded Protection Plugs - UNJ/UNJS Threads

In stock In production

Threaded Protection plugs for UNJ/UNJS threads protect and keep dirt, dust or debris out of these threaded ports or fittings. Knurled head design makes the part easy to assemble or remove by hand.

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Threaded Protection Plugs - Wide Flange

In stock In production

Threaded Protection plugs with a wide flange design keeps dirt, dust or paint flakes away from the hole when removed. The nylon material absorbs paint, keeping paint flakes to a minimum. The nitrile gasket seals the plug to the mating surface for a watertight seal.

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Threaded Sealing Caps - Metric Threads

In stock In production

Metric Threaded Sealing caps are suitable to protect metric threads. They include an internal neoprene rubber sealing disk to limit fluid leaks and entry of particles. Hand tightening is recommended but the cap can be applied or removed by wrench or socket at a low torque.

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Threaded Sealing Caps - UNF Threads

In stock In production

UNF Threaded Sealing caps are suitable to protect UNF threads. They include an internal neoprene rubber sealing disk to limit fluid leakage and entry of particules. Hand tightening is recommended but the cap can be applied or removed by wrench or socket at a low torque.

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Threaded Sealing Plugs - BSP/Gas Threads

In stock In production

Threaded Sealing plugs for BSP/Gas threads have a double sealing ring design on the underside of the flange. Design includes five complete threads for a secure fit and a head that will not trap liquid. The nylon material will work at higher temperatures and absorbs paint, keeping paint flakes to a minimum. Can be manually applied or removed with a screwdriver, wrench, socket or power tools.

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Threaded Sealing Plugs - Metric

In stock In production

Threaded Sealing plugs for Metric threads have a double sealing ring design on the underside of the flange. Design includes five complete threads for a secure fit and a head that will not trap liquid. The nylon material will work at higher temperatures and absorbs paint, keeping paint flakes to a minimum. Can be manually applied or removed with a screwdriver, wrench, socket or power tools.

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Threaded Sealing Plugs - UNF Threads

In stock In production

Threaded Sealing Plugs are used in the sheet metal industry as a protection against sharp edges and are ideal for closing panel cavities. They provide a clean finish and a quick solution. They come in a large offering to suit hole diameter and panel thickness.

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Frequently Bought

Tapered Caps & Plugs - Standard
Tapered Caps & Plugs - Standard
Tapered Caps & Plugs - Standard
37deg JIC Flared Fitting Threaded Plug
37deg JIC Flared Fitting Threaded Plug
37deg JIC Flared Fitting Threaded Plug
Threaded Protection Plugs - UNF Threads
Threaded Protection Plugs - UNF Threads
Threaded Protection Plugs - UNF Threads
Round Vinyl End Caps
Round Vinyl End Caps
Round Vinyl End Caps
Flanged Caps
Flanged Caps
Flanged Caps
Round End Caps - Standard
Round End Caps - Standard
Round End Caps - Standard
Threaded Protection Plugs - NPT Threads
Threaded Protection Plugs - NPT Threads
Threaded Protection Plugs - NPT Threads
Tear-Tab Caps
Tear-Tab Caps
Tear-Tab Caps
SAE J518 Studded Full Face Flange Protectors
SAE J518 Studded Full Face Flange Protectors
SAE J518 Studded Full Face Flange Protectors
Pull-Tab Caps
Pull-Tab Caps
Pull-Tab Caps