Square nuts have four flat sides that resist turning in a slot, channel or against a timber face, and are often used with carriage and T bolts. We stock DIN 557 and DIN 562 in Umm Al Quwain from M4 to M30 in steel and stainless A2, zinc plated, hot-dip galvanized and plain.
A square nut has a larger bearing area than a hex nut of the same thread and can be held captive in a square pocket, channel or timber recess so the bolt is tightened from the other side. DIN 557 is the standard-thickness square nut with a chamfer; DIN 562 is the thin flat square nut used in channel systems and sheet-metal slots. Square nuts are also used in T-slot tables, fencing and traditional timber construction.
Applications
- Strut channel and cable management
- Timber fencing, gates and rail work
- Machine tool T-slots and fixtures
- Guard rails and playground equipment
- Furniture, racking and shelving
- Agricultural and trailer hardware
Standards, grades & finishes
Nuts to DIN 557 (standard) and DIN 562 (thin), property class 5 and 8 to ISO 898-2, stainless A2 to ISO 3506-2, threads ISO 965 6H. Finishes zinc plated to ISO 4042, hot-dip galvanized to ISO 10684, plain. Larger sizes and weld-on square nuts to order.
This item is imported from approved mills and held in stock in our Umm Al Quwain warehouse alongside the anchor bolts, studs and plate washers we manufacture ourselves, so complete bolt sets ship from one source. Tensile, hardness and chemical testing is carried out by independent UAE-accredited laboratories, and EN 10204 3.1 certificates are issued with every batch. We supply across the GCC, MENA and Africa.