Flange Nuts
DIN 6923 / ISO 4161 Stainless Steel Hex Flange Nuts
Flange nuts combine a hexagonal wrenching body with an integrated circular flange that provides a wider bearing surface and helps distribute clamping pressure. VALTOR supplies stainless steel serrated and non-serrated flange nuts for machinery and industrial equipment.
Product Overview
Flange nuts combine a hex nut body with a one-piece flange that creates a larger bearing surface than a standard hex nut. This design helps distribute clamping force, supports stable positioning and can reduce the need for a separate washer in many assemblies.
VALTOR supplies DIN 6923 and ISO 4161 stainless steel flange nuts in serrated and smooth-bearing versions. Serrated undersides provide additional resistance to loosening, while non-serrated flanges provide a broad, smooth contact area.
304 and 316 stainless steel options support corrosion-resistant machinery, equipment and fabricated assemblies. Metric thread sizes, packing, documentation and custom dimensional requirements can be supplied according to the order.
Technical Specifications
Integrated Flange & Serration Performance
DIN 6923 / ISO 4161 flange nuts combine a hexagonal wrenching body with an enlarged bearing flange; the underside may be serrated or smooth according to the joint requirement.
Material, Thread & Finish Options
Material, thread, finish and flange underside should be specified together for the mating fastener and service environment.
Finish availability depends on the base material and technical specification; not every finish applies to every material.
Quality Control & Documentation
Inspection covers mating-thread fit, flange geometry, serrations where applicable, material and surface condition.
Thread size, pitch and mating fit are checked to the required specification. Dimensional inspection may cover nut height, width across flats, flange diameter, flange thickness and thread dimensions. Serrated versions are checked for formation, consistency, underside condition and visible deformation or damage without assigning unsupported performance values. Material, finish consistency, burrs and visible manufacturing defects are also checked. Order-specific documentation may include a Material Certificate / MTC, raw material report, dimensional inspection report or third-party inspection support.
Packaging & Matching Fastener Supply
Selection should match the thread, material, mechanical requirement, finish and application environment.
The integrated flange provides a larger bearing surface and may reduce the need for a separate washer in suitable assemblies. The actual washer requirement remains dependent on joint design and project specification.
Customer labels, part numbers, carton markings, packing quantities and customer-authorized private-label packaging can be supported.
For quotation, provide DIN 6923 / ISO 4161 or the required specification, thread size, serrated or non-serrated type, material, finish, quantity, packaging and required inspection documents. Availability and lead time depend on the complete order specification and current production conditions.
Applications
Integrated bearing flanges for efficient fastening in machinery and industrial equipment.
Used on machine frames and brackets where a wider bearing surface supports efficient installation.
Suitable for production machinery, equipment guards and fabricated industrial assemblies.
Applied in automotive production equipment and mechanical assemblies requiring compact fastening.
Used in equipment cabinets, mounted components and fabricated control-system frames.
A practical option for fabrication, maintenance and equipment-building requirements.
Frequently Asked Questions
What is the difference between flange nuts and standard hex nuts?
Flange nuts include an integrated flange that provides a larger bearing surface, while standard hex nuts usually require a separate washer when additional support is needed.
What are serrated flange nuts used for?
Serrated flange nuts are designed for applications where additional resistance against loosening is required, especially in assemblies affected by vibration.
When should I choose stainless steel flange nuts?
Stainless steel flange nuts are suitable for applications requiring corrosion resistance, outdoor exposure or cleaner surface conditions.
How are flange nuts packaged for export shipment?
Flange nuts can be supplied in bags, cartons, boxes or customized export packaging according to quantity and customer requirements.
Can you provide inspection documents and customized packaging?
Yes. Material certificates, inspection documents and customized packaging can be arranged according to order requirements.
Share the required standard, type, material, thread size, quantity and documentation requirements with VALTOR.