Square Bolt (C Bolt) M12 x 36 mm Thread, 121 x 156 mm Internal Dimensions - T316 Stainless Steel (A4)


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Square Bolt (C Bolt) M12 x 36 mm Thread, 121 x 156 mm Internal Dimensions - T316 Stainless Steel (A4)

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£8.39 tax incl.

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Description & Dimensions
T316 Stainless Steel Square bolt (C bolt) complete with 1 full nut and 1 half nut on each leg
To Suit 120*120 RHS (Rectangular Hollow Section)
Ideally suited for use with standard rectangular hollow section, but of course, will have many uses
These are for holding just one RHS onto a supporting material not exceeding thickness 2*A (twice bar diameter)

See the extended leg series for the thickness of supporting material greater than 2*A (twice bar diameter)

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

RHS : 100*100
A = 12 mm
B = 121 mm
C = 156 mm
D = 36 mm
Centers = 133 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 T316 Stainless Steel (A4)
Inside Diameter 121
Inside Height 156
Thread Size M12
Leg Centers 133
Thread length 36
Product Type C / Square-Bolt
Design Suit RHS Box Section
Delivery & Part Deliveries

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 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:


Volume discounts

Quantity Price
50 £7.55
80 £7.13
100 £6.71
200 £6.29
500 £5.87
1000 £5.45
2000 £5.03


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