Square Weld Nuts
DIN 928 Stainless Steel Square Weld Nuts for Sheet Metal Fabrication
VALTOR supplies DIN 928 square nuts with a square outer profile with welding projections for machinery, sheet metal fabrication and industrial fastening assemblies. Stainless steel options support applications requiring corrosion resistance, clean appearance and reliable thread compatibility.
Product Overview
Square nuts are internally threaded fasteners with a square outer profile with welding projections. They are commonly used in machinery, sheet metal fabrication and industrial assemblies where the connection design benefits from a square profile, increased surface contact or anti-rotation support from a retaining pocket.
Compared with six-sided hex nuts, square nuts provide a distinct wrenching and contact geometry. Selection depends on installation space, tool access and the way the nut is retained in the assembly.
VALTOR supplies DIN 928 square nuts in 304 and 316 stainless steel for corrosion-resistant applications. Carbon steel and alternative finishes such as zinc plated or black oxide can be supplied according to requirement, while stainless versions are available natural or passivated.
Technical Specifications
Projection Welding Structure & Sheet Metal Integration
DIN 928 square weld nuts combine a square external body, internal female thread and formed underside projections for permanent attachment to suitable sheet metal by projection welding.
Material, Weldability & Finish Options
Nut material, sheet material, surface condition and fabrication sequence should be selected together for reliable projection welding and corrosion protection.
A finish applied before welding can affect the process. Where coating or post-weld corrosion protection is required, the sequence must follow the actual fabrication specification.
Weld Quality, Inspection & Documentation
Inspection covers the mating thread, projection formation, dimensions, sample fit where required, material and surface condition.
Thread checks cover diameter, pitch, quality and mating fit. Projections are inspected for formation, height or profile consistency, missing features, deformation, burrs and visible defects. Dimensional inspection may include thread size, square-body dimensions, height, projection location and geometry, and overall profile. OEM trials can verify fit with the specified sheet, hole or locating feature, panel thickness and welding process. Any welded-assembly testing follows an agreed customer or project method—without invented pull-out, push-out, torque-out, current, time or pressure values. Available documentation may include a Material Certificate / MTC, raw material report, dimensional report, sample inspection report or third-party support.
OEM Sheet Metal Supply & Packaging
Provide DIN 928 or a custom drawing, thread, nut and projection geometry, material, finish, sheet material and thickness, quantity and welding requirements. Geometry differing from DIN 928 is identified as a custom square weld nut unless it actually conforms.
Thread compatibility is confirmed according to the final assembly.
Packing should reduce damage to welding projections, threads, nut edges and finished surfaces because damaged projections can affect welding consistency.
Customer labels, part numbers, carton markings, packing quantities and customer-authorized private-label packaging can be supported.
Delivery depends on standard or custom geometry, material, thread, quantity, surface requirements, sample validation and current production availability.
Applications
Four-sided fastening solutions for machinery, fabrication and industrial assembly.
Provides a practical retained-nut option for machinery frames and mechanical assemblies.
Used in fabricated brackets and pockets designed to hold the square profile against rotation.
Supports threaded connections in production equipment and industrial hardware.
Available for custom hardware requiring specific dimensions, materials or packaging.
Suitable for general connections where a DIN 928 square nut profile is specified.
Frequently Asked Questions
What are square nuts used for?
Square nuts are used in machinery, sheet metal fabrication and industrial fastening assemblies where a square outer profile is preferred for the connection design.
What is the difference between square nuts and hex nuts?
Square nuts have a square outer profile with welding projections, while hex nuts have a six-sided outer shape. The selection depends on installation requirements, tool access and assembly design.
When should I choose stainless steel square nuts?
Stainless steel square nuts are commonly selected for applications requiring corrosion resistance, cleaner surface appearance or outdoor/environmental durability.
Can square nuts be supplied in custom sizes and packaging?
Yes. VALTOR can supply square nuts according to size requirements, packaging preferences and other project specifications.
How are square nuts packaged for export shipment?
Square nuts can be packed in bags, cartons, boxes or customized export packaging according to quantity and customer requirements.
Related Products
Share the required material, metric thread size, quantity, packaging and documentation requirements with VALTOR.