Square Bolt (C Bolt) M6 x 18 mm Thread, 26 x 43 mm Internal Dimensions - ZP (Zinc Plated)


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Square Bolt (C Bolt) M6 x 18 mm Thread, 26 x 43 mm Internal Dimensions - ZP (Zinc Plated)

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£ 2.76 tax incl.

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Quantity Discount Unit price
50 10% £ 2.48
80 15% £ 2.35
100 20% £ 2.21
200 25% £ 2.07
500 30% £ 1.93
1000 35% £ 1.79
2000 40% £ 1.66
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Zinc Plated Mild Steel Square bolt (C bolt) complete with 1 full nut and 1 half nut on each leg
To Suit 25*25 RHS (Rectangular hollow Section)
Ideally suited for use with standard rectangular hollow section, but of course will have many uses
These 1124 series are for holding just one RHS onto a supporting material not exceeding thickness 2*A

See 1125 series which are extended leg for thickness of supporting material greater than 2*A

Please refer to diagram for details (all measurements in mm):

RHS : 25*25

A = 6 mm

B = 26 mm

C = 43 mm

D = 18 mm

Centers = 32 mm
Our manufacturing tolerances are + / - 1 mm)

We use roll threading so the diameter of the bar is usually less than the thread size. Please ask if unsure
Data sheet
Material ZP (Zinc Plated)
Inside Diameter 26
Inside Height 43
Thread Size M6
Leg Centers 32
Leg Length 43
Thread length 18
Product Type C / Square-Bolt
Design Suit RHS Box Section
Delivery Details

We offer a range of delivery options based on the weight of the overall shopping cart and your specific location.

After adding the products to the shopping cart you will see a range of options based on delivery to mainland UK. Change country and the delivery options will be modified for your address.

  • Please be aware of our latest order times for same-day dispatch (2 PM)
  • We ship orders every weekday
  • Be aware of current stock levels (shown on the product page and the checkout page)
  • Be aware of our shipping terms and conditions (CLICK HERE) which basically state we may upgrade delivery at our discretion and that we are not responsible for late deliveries outside of our control


Every product page and the cart shows the current stock level. Our normal practice is to only ship the full order unless the shortfall is our fault.

If you can see we are short of stock and want to receive what we have as soon as possible, and the remainder when they are available, then add this product to the shopping cart also (UK Only):


Reviews (4)

Rated 5.00 on the scale 1 - 5 based on 4 customer reviews
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Great Value

Great Value

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U Bolts

Great service really helpful staff, speedy delivery everything perfect will be back. thanks

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Easy transaction

Got what i wanted to bolt a cycle carrier to a BakRak without having to buy a box full. The bolts fit the square section & prevent lateral movement from the over large bolts supplied with the carrier.

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