MPN

STAHLWILLE 731/40 Series Open Ended Insert Open-Ended Shell Tool, 36.0 mm, 14 x 18mm Insert

RS Stock No.:: 778-2358
Mfr. Part No.:: 58214036
Brand:: STAHLWILLE

STAHLWILLE 731/40 Series Open Ended Insert Open-Ended Shell Tool, 36.0 mm, 14 x 18mm Insert

Subtotal (1 unit)*

£88.88

(exc. VAT)

£106.66

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

8 unit(s) ready to ship
Plus 4 unit(s) ready to ship from another location
Plus 5 unit(s) shipping from 23 October 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	£88.88

*price indicative

RS Stock No.:: 778-2358
Mfr. Part No.:: 58214036
Brand:: STAHLWILLE

Find similar products by selecting one or more attributes.

Stahlwille 731/40 Series Spanner Insert, 36mm size, Open Ended Insert Head Type - 58214036

This spanner insert features a 36mm size designed for use with torque wrenches that employ an interchangeable insert system. Constructed from high-quality materials, this open-ended shell tool is specifically engineered for durability in demanding environments, making it ideal for professional use in industries such as automation, electronics, and mechanical engineering.

Features & Benefits

• Open-ended design facilitates easy access to fasteners
• Special chromium over nickel plating ensures corrosion resistance
• Drop-forged construction adds strength and durability
• Compatible with a socket insert size of 14 x 18mm
• Cooled in an oil bath for improved hardness
• Designed to withstand rigorous workshop conditions

Applications

• Suitable for use in automotive repair and maintenance
• Ideal for mechanical assembly tasks requiring precision
• Utilised in electrical installations where space is restricted
• Perfect for heavy-duty in industrial settings

What materials are used in the construction of this spanner insert?

It is made from high-quality steel that is drop-forged and treated with a special chromium over nickel plating, providing a durable and chip-proof finish ideal for long-term use.

How does the open-ended design benefit users?

The open-ended design allows easy engagement with fasteners in tight spaces, making it highly effective for applications where standard wrenches may not fit.

What is the significance of the socket insert size?

The standard socket insert size of 14 x 18mm ensures compatibility with a range of torque wrenches, facilitating seamless integration into existing toolkits.

How does the oil cooling process affect the tool's performance?

Cooled in an oil bath, this process enhances the hardness of the spanner insert, resulting in increased strength and resistance to wear during heavy-duty applications.

What are the weight specifications of this spanner insert?

The gross weight of this unit is 275 g, making it manageable and easy to handle for extended use in professional settings.

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	Select all
	Brand STAHLWILLE
	Type Open-Ended Shell Tool
	Series 731/40
	Head Type Open Ended Insert
	Size 36.0 mm
	Insert Size 14 x 18mm