Square Bolt (C Bolt) M8 x 20 mm Thread, 31 x 42 mm Internal Dimensions - T304 Stainless Steel (A2)


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Square Bolt (C Bolt) M8 x 20 mm Thread, 31 x 42 mm Internal Dimensions - T304 Stainless Steel (A2)

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£ 3.32 tax incl.

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50 10% £ 2.99
80 15% £ 2.83
100 20% £ 2.66
200 25% £ 2.49
500 30% £ 2.33
1000 35% £ 2.16
2000 40% £ 1.99
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Square bolt (C bolt) 31 mm ID * 42 mm IH - T304 Stainless Steel complete with 1 full nut and 1 half nut on each leg
Please refer to diagram for details (all measurements in mm):
A = 8 mm
B = 31 mm
C = 42 mm
D = 20 mm
Centers = 39 mm
R (inside radius) = 4 mm
Material Finish
T304 Stainless steel also called A2
Tolerance on dimensions +/- 1 mm. Please note that as we use roll threading, the bar diameter is slightly less than the thread diameter
Data sheet
Material T304 Stainless Steel (A2)
Inside Diameter 31
Inside Height 42
Thread Size M8
Leg Centers 39
Leg Length 42
Thread length 20
Product Type C / Square-Bolt
Design Graphskill Standard
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 (3)

Rated 5.00 on the scale 1 - 5 based on 3 customer reviews

Square U Bolts

Been searching for a certain type, came across this site and company, well pleased with product and delivery. will be back in future.

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Verified purchase

Wow! Small miracles do happen.

Came across this site whilst looking for specific u bolts that no one seemed to have. Ordering was easy, customer service was perfect and items arrived in good time. Fit my job perfectly. Is now in my favourites list for my next project.

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Verified purchase

Very happy customer

Very high quality products at great prices. In addition shipping was cheap and fast. Very happy, and I will definitively come back!

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