Can these plugs be used outdoors or in wet environments?

Yes. 304 stainless steel offers good corrosion resistance in most outdoor and wet environments. It performs well against rain, humidity, and mild chemical exposure. For marine or highly chlorinated environments, 316 stainless steel is typically recommended for superior salt resistance.

Are these BSP or NPT thread? Will they fit my American pipe fittings?

These plugs use BSP (British Standard Pipe) threads, which are common in the UK, Australia, Asia, and many industrial systems worldwide. BSP threads are NOT directly compatible with NPT (National Pipe Thread) fittings used in most US residential plumbing — the thread angle and pitch differ. Always confirm your existing fittings use BSP before ordering.

Do I need thread sealant (PTFE tape) with these plugs?

Yes, thread sealant is generally recommended for a leak-free seal. PTFE (Teflon) tape or a liquid pipe thread compound applied to the male threads before installation helps fill micro-gaps and prevents weeping, especially in water or gas lines. Apply 2–3 wraps of PTFE tape in the direction of the thread.

Can I reuse these plugs after removal?

In most cases, yes — stainless steel hex plugs can be removed and reinstalled. Clean the threads, remove old sealant, and apply fresh PTFE tape before reinstalling. Inspect threads for any damage or galling before reuse. Avoid over-tightening, which can deform threads and make future removal difficult.

304 Stainless Steel BSP Male Thread Hex Plug — End Stopper Pipe Fitting (1/4" to 2")

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304 Stainless Steel BSP Male Thread Hex Plug — End Stopper Pipe Fitting (1/4" to 2")

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Size (BSP): BSP 1&4" (DN8)

Amount: 1 pcs

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$2.16 USD

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BSP Male Thread Hex Plug — Seal Pipe Ends Reliably with 304 Stainless Steel

Whether you're capping off an unused port on a hydraulic manifold, blanking a test point on a compressed air line, or sealing a spare outlet on a water distribution system, a loose or corroding end plug is a liability you can't afford. These 304 stainless steel BSP male thread hex plugs give plumbers, pipefitters, and DIY builders a dependable, wrench-driven solution that holds tight and resists corrosion over the long haul.

Each plug is machined from 304 stainless steel with a fully formed male BSP (British Standard Pipe) thread and a hex head for positive wrench engagement. Available in eight sizes from BSP 1/4" (DN8) to BSP 2" (DN50), covering the most common nominal pipe diameters used in plumbing, industrial, and hydraulic pipework. Sold individually (1 pc per order) so you can order exactly the quantity you need.

Typical applications include capping spare outlets on water manifolds, blanking unused ports on pneumatic and hydraulic circuits, sealing test points during pressure testing, and closing off pipe ends during system modifications — anywhere a BSP pipe end stopper or stainless steel pipe plug is required in a professional or workshop setting.

🔗 Thread Compatibility: BSP (British Standard Pipe) male thread — fits BSP female threaded sockets, tees, crosses, and manifolds. Not compatible with NPT (National Pipe Thread) fittings. Confirm your system uses BSP before ordering.

✅ Key Features of These BSP Male Hex Plug Pipe Fittings

🔩 Hex Head Design — Six-sided head provides solid wrench grip for controlled torque during installation and removal, reducing the risk of rounding or slipping on stainless steel fittings.
🛡️ 304 Stainless Steel Construction — Resists rust, oxidation, and mild chemical exposure, making these plugs suitable for water lines, compressed air systems, and light industrial fluid circuits.
📐 Full BSP Thread Engagement — Precisely cut male BSP threads ensure consistent fit across standard BSP female fittings from DN8 to DN50, minimizing cross-threading risk during assembly.
📦 Eight Size Options in One Listing — From BSP 1/4" (DN8) to BSP 2" (DN50), covering the most common pipe sizes used in residential plumbing, HVAC, and light industrial pipework — no need to source from multiple suppliers.
💧 Compatible with PTFE Sealant — Smooth thread form accepts PTFE tape and liquid thread compounds cleanly, helping achieve a leak-free seal on water, air, and low-pressure fluid lines.
🔄 Removable and Reusable — Stainless steel threads resist galling better than carbon steel alternatives, allowing these plugs to be removed, cleaned, and reinstalled during system modifications or maintenance.

📐 Technical Specifications — BSP Male Hex Plug Pipe Fitting

Product Type	Male Thread Hex Plug / End Stopper
Thread Standard	BSP (British Standard Pipe) — Male
Available Sizes	BSP 1/4" (DN8), 3/8" (DN10), 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1-1/4" (DN32), 1-1/2" (DN40), 2" (DN50)
Material	304 Stainless Steel
Head Style	Hex (Six-Sided)
Drive Method	Wrench / Spanner (open-end or adjustable)
Finish	Natural stainless (brushed/machined)
Hex Wrench Size	See variant options (varies by pipe size)
Overall Length	See variant options
Working Pressure	Contact us to confirm (typically up to 150 PSI / 10 bar for standard plumbing)
Compatible Sealant	PTFE tape, liquid thread compound
Quantity per Order	1 pc
Thread Compatibility	BSP female fittings only — not compatible with NPT

⚠️ Size Note: BSP sizes refer to nominal pipe bore, not thread outer diameter. Always verify your fitting's thread standard (BSP vs NPT) and nominal size before ordering. When in doubt, measure the thread OD and consult a BSP thread chart.

❓ Frequently Asked Questions

How do I choose the right BSP hex plug size?

Match the plug size to your pipe's nominal bore (DN number). BSP sizes are based on the internal diameter of the pipe, not the thread OD. For example, a BSP 1/2" plug (DN15) fits a pipe with roughly 15mm internal bore. When in doubt, measure the thread OD of your existing female fitting and compare to a BSP thread chart. The DN number is often stamped on existing fittings.

Quick reference: 1/4" ≈ 6mm bore (DN8) | 1/2" ≈ 15mm bore (DN15) | 1" ≈ 25mm bore (DN25) | 2" ≈ 50mm bore (DN50).

How much pressure can these stainless steel hex plugs handle?

304 stainless steel BSP hex plugs are generally suitable for working pressures up to approximately 150 PSI (10 bar) in standard plumbing and low-pressure fluid applications. Actual pressure ratings depend on pipe schedule, thread engagement depth, and the use of appropriate thread sealant. For high-pressure hydraulic or pneumatic circuits, please contact us to confirm suitability for your specific system.

Can I use these plugs outdoors or in wet/humid environments?

Yes. 304 stainless steel offers good corrosion resistance against rain, humidity, and mild chemical exposure, making these plugs suitable for outdoor plumbing, irrigation systems, and workshop air lines. For marine environments or applications with prolonged exposure to salt water or chlorinated water, 316 stainless steel is typically recommended for superior corrosion resistance.

Are these BSP or NPT thread? Will they fit standard US pipe fittings?

These plugs use BSP (British Standard Pipe) threads, which are widely used in the UK, Australia, Asia, and many industrial systems globally. BSP threads are not directly interchangeable with NPT (National Pipe Thread) fittings common in US residential plumbing — they differ in thread angle (55° BSP vs 60° NPT) and pitch. Always confirm your existing fittings are BSP-threaded before ordering. If you're unsure, check the fitting markings or measure the thread pitch.

Do I need PTFE tape or thread sealant with these plugs?

Yes, thread sealant is generally recommended for a reliable, leak-free seal. Apply 2–3 wraps of PTFE (Teflon) tape in the direction of the thread before installation, or use a liquid pipe thread compound. This is especially important on water, gas, or compressed air lines where even minor seepage is unacceptable. PTFE tape also makes future removal easier by preventing thread galling.

What wrench size do I need to install these hex plugs?

The hex flat-to-flat dimension varies by plug size. As a general guide, smaller sizes (BSP 1/4" to 1/2") typically require a 14–22mm open-end or adjustable wrench, while larger sizes (BSP 1" to 2") generally need a 30–50mm wrench. An adjustable wrench or pipe wrench works across all sizes. Avoid using pliers directly on the hex faces to prevent marring the stainless finish.

Can these plugs be removed and reused after installation?

In most cases, yes. Stainless steel threads resist galling better than carbon steel, so these plugs can typically be removed, cleaned, and reinstalled during system modifications or maintenance. Before reinstalling, remove old PTFE tape or sealant residue from the threads, inspect for any damage, and apply fresh sealant. Avoid over-tightening on initial installation to make future removal easier.

🛒 Select your size (BSP) above, then add to cart — ships from our US warehouse.

304 Stainless Steel BSP Male Thread Hex Plug — End Stopper Pipe Fitting (1/4" to 2")

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Description

BSP Male Thread Hex Plug — Seal Pipe Ends Reliably with 304 Stainless Steel

✅ Key Features of These BSP Male Hex Plug Pipe Fittings

📐 Technical Specifications — BSP Male Hex Plug Pipe Fitting

❓ Frequently Asked Questions

304 Stainless Steel BSP Male Thread Hex Plug — End Stopper Pipe Fitting (1/4" to 2")

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