RS PRO Key Steel Square Bar 4mm Diameter, 4mm W, 4mm H, 330mm L

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Subtotal (1 lot of 10 units)*

£53.78

(exc. VAT)

£64.54

(inc. VAT)

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  • Plus 24 unit(s) shipping from 27 October 2025
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Lot(s)
Per Lot
Per unit*
1 - 2£53.78£5.378
3 - 9£50.01£5.001
10 - 29£47.32£4.732
30 +£43.02£4.302

*price indicative

RS Stock No.:
681-508
Brand:
RS PRO
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Brand

RS PRO

Form

Square Bar

Material

Key Steel

Length

330mm

Rod Diameter

4mm

Width

4mm

Material Grade

080A40

Height

4mm

Tensile Strength

≥550MPa

Hardness

201 to 255 HB

Suitability

Automotive Parts, Connecting Rods, Studs, Bolts, Axles, Spindles, and General Engineering Components

Thermal Conductivity

37.5W/mK

Density

7.85g/cm³

Non Compliant

COO (Country of Origin):
GB

RS PRO Key Steel Square Bar, 330 x 4 x 4 mm


This multifunctional square bar from RS PRO is commonly used for a variety of engineering and construction applications. The key steel material provides superior strength and has a zinc and chromate finish for enhanced resistance to corrosion. This means you can use it in moist or wet areas without worrying about decay due to rust.
This component can be easily cut into bits to suit the nature of your project. Its thermal resistance also makes it suitable for use in machines that dissipate a lot of heat. It's supplied in 330 m lengths so there's an ample supply for various tasks. You can find it useful in the manufacture of different kinds of keys for construction machinery and gib heads for diesel generators.

Features and Benefits


• Square bar form
• Dimensions of 4 (height) x 330 (length) x 4 mm (width)
• Key steel material
• Thickness of 4 mm

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