Flange Nut

DIN6923 Flange Head Nut

DIN6923 Flange Head Nut provide a secure and tight fit, while also preventing the nut from loosening due to vibration. This is especially important in industries where machinery and other heavy equipment are used, as any loosening of fittings can cause dangerous and costly consequences. The flange of DIN6923 Flange Head Nut acts as a washer, providing additional support while preventing the nut from embedding itself into the surface of the material being fastened. This greatly reduces the risk of damage to the structure, as well as providing a more aesthetically pleasing finish.

DIN6923 Flange Head Nut provide a secure and tight fit, while also preventing the nut from loosening due to vibration. This is especially important in industries where machinery and other heavy equipment are used, as any loosening of fittings can cause dangerous and costly consequences. The flange of DIN6923 Flange Head Nut acts as a washer, providing additional support while preventing the nut from embedding itself into the surface of the material being fastened. This greatly reduces the risk of damage to the structure, as well as providing a more aesthetically pleasing finish.

Previous: No more data
Product Details

Product Introduction
Hexagon flange nuts manufactured to DIN 6923, incorporating an integrated circular flange that replaces a separate washer. The serrated flange face resists rotation under vibration, preventing loosening in dynamic service without the need for chemical threadlockers or secondary locking elements. Sizes from M5 through M20 are stocked in stainless steel; larger diameters available on order. Standard pairing with hex head bolts, socket head bolts, and carriage bolts.

Material & Mechanical Properties
Produced from high-grade austenitic stainless steel, grades A2 (304) and A4 (316) per ISO 3506-2. Strength classes A2-70 and A4-80 deliver minimum tensile strength of 700 MPa and 800 MPa respectively. Mechanical properties are certified by lot with full chemical and physical test traceability. Stainless steel alloy selection ensures retention of mechanical integrity in both ambient and elevated temperature service.

Geometry & Thread
Internal ISO metric coarse thread per DIN 13 / ISO 724. The flange diameter and thickness conform to DIN 6923; the bearing face carries annular serrations that embed into the mating surface, generating mechanical lock. The enlarged flange footprint distributes clamp load and prevents the nut from sinking into softer structural materials, protecting painted or plated assemblies from surface damage.

Corrosion Resistance
Stainless steel construction provides inherent corrosion resistance without applied coating, maintaining performance in wet, humid, and mildly acidic environments. Grade A4 (316) is specified for enhanced pitting resistance in chloride-exposed conditions including marine, coastal, and chemical processing applications. Passivation treatment is applied as standard to optimize the passive chromium oxide layer.

Application Suitability
Machinery and heavy equipment assembly where vibration-induced loosening is a risk; food processing and pharmaceutical equipment requiring corrosion-resistant, washer-free fastening; architectural and structural framing exposed to weather; and any joint where a compact, single-piece flanged nut improves assembly efficiency and long-term reliability.

Technical Parameters

Place of Origin CHINA
Standard DIN6923 Flange Head Nut
HS CODE 7318160000
Brand Name QBH
Certification ISO9001
Material 35K, 40Cr, 35CrMo, SCM435, etc.
Size M3-M90
Production Process Cold forging and hot forging
Class 4/ 6/ 8/ 10
Delivery Time Within 30 Days

Product Introduction
Hexagon flange nuts manufactured to DIN 6923, incorporating an integrated circular flange that replaces a separate washer. The serrated flange face resists rotation under vibration, preventing loosening in dynamic service without the need for chemical threadlockers or secondary locking elements. Sizes from M5 through M20 are stocked in stainless steel; larger diameters available on order. Standard pairing with hex head bolts, socket head bolts, and carriage bolts.

Material & Mechanical Properties
Produced from high-grade austenitic stainless steel, grades A2 (304) and A4 (316) per ISO 3506-2. Strength classes A2-70 and A4-80 deliver minimum tensile strength of 700 MPa and 800 MPa respectively. Mechanical properties are certified by lot with full chemical and physical test traceability. Stainless steel alloy selection ensures retention of mechanical integrity in both ambient and elevated temperature service.

Geometry & Thread
Internal ISO metric coarse thread per DIN 13 / ISO 724. The flange diameter and thickness conform to DIN 6923; the bearing face carries annular serrations that embed into the mating surface, generating mechanical lock. The enlarged flange footprint distributes clamp load and prevents the nut from sinking into softer structural materials, protecting painted or plated assemblies from surface damage.

Corrosion Resistance
Stainless steel construction provides inherent corrosion resistance without applied coating, maintaining performance in wet, humid, and mildly acidic environments. Grade A4 (316) is specified for enhanced pitting resistance in chloride-exposed conditions including marine, coastal, and chemical processing applications. Passivation treatment is applied as standard to optimize the passive chromium oxide layer.

Application Suitability
Machinery and heavy equipment assembly where vibration-induced loosening is a risk; food processing and pharmaceutical equipment requiring corrosion-resistant, washer-free fastening; architectural and structural framing exposed to weather; and any joint where a compact, single-piece flanged nut improves assembly efficiency and long-term reliability.

Technical Parameters

Place of Origin CHINA
Standard DIN6923 Flange Head Nut
HS CODE 7318160000
Brand Name QBH
Certification ISO9001
Material 35K, 40Cr, 35CrMo, SCM435, etc.
Size M3-M90
Production Process Cold forging and hot forging
Class 4/ 6/ 8/ 10
Delivery Time Within 30 Days
FAQ

1. How do you let me trust you.

Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.

 

2. How about your price.

We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.

 

3. How do you control your quality.

Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods

 

4. Could you provide free samples?

For new customer, We can provide free samples for standard fastener, But the clients will pay the express

charges. For old customer, We will send you free samples and pay express charges by ourself.

 

5. What is your packing.

Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information

such as LOGO and pattern of customers.

 

6. What is your payment term

Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately.

Get Your Free Sample Now
Submit this form and our sales representative will contact you soon.
*Name
Phone
*Email
Company
*Message