Description
Overview:
The Square Headed Malleable Iron Plug 1/8" BSP is a tough, male-threaded blanking plug for sealing unused or test ports in pipework and machinery. Made from malleable iron, it offers strength and durability under tightening loads and everyday site use. The square head gives a secure grip with a spanner or socket for quick fitting and removal. Sized for 1/8" BSP systems (3.2 mm nominal; thread outside diameter approx. 9.7 mm), it suits a wide range of UK and European BSP fittings. Use it to close off female BSP connections in plumbing, industrial, agricultural, and general workshop applications, including compressors, pumps, manifolds, and plant equipment. It provides a dependable seal to help prevent leaks, keep contaminants out, and maintain system integrity during operation, transport, or storage.
Key Features:
- Durable malleable iron construction for long service life and resistance to cracking under torque and vibration
- Square head for positive drive and easy tightening/removal with a spanner or socket, even in confined spaces
- 1/8" BSP male thread (3.2 mm nominal; approx. 9.7 mm thread OD) for compatibility with common UK/EU pipework and fittings
- Clean, well-formed threads to support reliable sealing with PTFE tape or thread sealant where appropriate
- Compact head profile reduces protrusion after installation
- Suitable for water, air, and light oils in general-purpose plumbing and industrial systems
- Re-usable when threads remain clean and undamaged
Typical Applications:
Sealing unused female BSP ports on manifolds, valves, pumps, compressors, gear housings, and pneumatic or hydraulic equipment. Useful for blanking test points, gauge connections, and auxiliary outlets in water, air, and light oil lines across plant maintenance, workshop setups, agricultural machinery, and general plumbing tasks.
Also known as:
Blanking plug, square head plug, BSP male plug, pipe stop, screw plug, pipe bung, end stop, sealing plug, stop plug, BSP blank, closure plug.
Product Specifications
| L&S Part No. | 888 018 |
|---|---|
| Unit of Sale | 1 |
| Key Features | - 1/8" BSP male thread fits UK/EU pipework - Malleable iron construction resists cracking - Square head allows easy spanner use - Suitable for water, air, light oils - Compact head reduces installation protrusion |


