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NXF USN A36/DIN17100/EN 10025-2/JIS G3101 Diameter M2-60 Grade 4.8-10.9 Length 3-120mm Black Oxide Flat Head Tapping Screws
2026-09-19 20:21 NXF GROUP
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Product Description
A36 Introduction
ASTM A36 is the most commonly used mild and hot-rolled steel. It has excellent welding properties and is suitable for
grinding,punching, tapping, drilling and machining processes. Yield strength of ASTM A36 is less than that of cold roll C1018,thus enabling ASTM A36 to bend more readily than C1018. Normally, larger diameters in ASTM A36 are not produced since C1018 hot roll rounds are used.
grinding,punching, tapping, drilling and machining processes. Yield strength of ASTM A36 is less than that of cold roll C1018,thus enabling ASTM A36 to bend more readily than C1018. Normally, larger diameters in ASTM A36 are not produced since C1018 hot roll rounds are used.
A36 Black Oxide Flat Head Tapping Screws Introduction
Black Oxide Flat Head Tapping Screw is a self-tapping fastener engineered for direct fastening without pre-tapped threads. It features a flat countersunk head design that sits flush with the workpiece surface after installation to maintain a smooth
exterior. Manufactured from high-strength carbon steel and finished with black oxide surface treatment, the screw retains good surface hardness while offering mild corrosion resistance and excellent anti-glare property.
The sharp self-tapping thread and cutting tip can carve internal threads into substrates during tightening, simplifying assembly operations. The flat head provides large bearing area to prevent sinking and distribute fastening pressure evenly. Black oxide finish forms a thin black conversion film on steel, also serving as a good base for oil or lubricant to reduce friction during installation.This product is widely used in machinery assembly, electrical equipment, metal cabinet fabrication, tooling and indoor metal connection applications, ideal for fastening thin metal sheets, castings and composite materials in dry environment.
exterior. Manufactured from high-strength carbon steel and finished with black oxide surface treatment, the screw retains good surface hardness while offering mild corrosion resistance and excellent anti-glare property.
The sharp self-tapping thread and cutting tip can carve internal threads into substrates during tightening, simplifying assembly operations. The flat head provides large bearing area to prevent sinking and distribute fastening pressure evenly. Black oxide finish forms a thin black conversion film on steel, also serving as a good base for oil or lubricant to reduce friction during installation.This product is widely used in machinery assembly, electrical equipment, metal cabinet fabrication, tooling and indoor metal connection applications, ideal for fastening thin metal sheets, castings and composite materials in dry environment.
A36 Black Oxide Flat Head Tapping Screws Drawing
A36 Chemical Composition And Mechanical Properties
Factory and Product Pictures
A36 Black Oxide Flat Head Tapping Screws Product Pictures
A36 PMI spectral testing proves
Video of a customer visiting us
Product processing
A36 Black Oxide Flat Head Tapping Screws Product Processing
1.Raw Material Inspection & Blanking:
Adopt high-quality carbon steel wire rods that conform to international fastener industry standards. Strictly inspect raw material tensile strength, surface flatness, ductility and internal metallographic structure to exclude materials with cracks, oxide spots and impurity defects. Qualified steel wires are precisely cut into fixed-length blanks according to screw specifications, providing consistent and stable raw material conditions for subsequent cold forming and thread processing.
2.Surface Pretreatment & Cold Heading Forming:
2.Surface Pretreatment & Cold Heading Forming:
Complete professional degreasing, decontamination and lubrication pretreatment to remove surface oil stains and oxide layers, ensuring smooth forming and flawless surface texture. Adopt multi-station precision cold heading technology to complete one-piece integral forming of flat countersunk head, cross recess and screw rod. The integral molding process ensures compact internal structure, accurate head size and standard recess tolerance for stable tool engagement.
3.Trimming, Shaping & Thread Rolling:
Thoroughly remove residual burrs, flashes and sharp edges on the screw head and rod surface. Conduct fine shaping and flatness calibration to ensure smooth countersunk head contour and flush mounting effect. Adopt high-precision thread rolling process to form sharp self-tapping threads with uniform pitch and complete tooth profile, delivering excellent cutting performance, smooth installation and reliable locking stability.
4.Heat Treatment & Stress Relief:
4.Heat Treatment & Stress Relief:
Perform standardized quenching and tempering heat treatment to optimize surface hardness, structural toughness and overall tensile strength. Effectively eliminate residual internal stress generated during cold heading and thread rolling processes. This treatment greatly improves wear resistance, deformation resistance and fatigue resistance, preventing thread slipping, fracture and structural failure during repeated self-tapping fastening.
5.Black Oxide Treatment & Full-Range Quality Inspection:
5.Black Oxide Treatment & Full-Range Quality Inspection:
Conduct professional black oxide finishing and oil sealing treatment to form a uniform, dense and matte black protective film on the screw surface. The treatment enhances surface lubricity, anti-glare performance and mild corrosion resistance while maintaining original mechanical properties. Carry out comprehensive quality inspection including dimensional tolerance detection, cross recess precision test, thread tooth integrity check, hardness testing, surface uniformity screening and assembly performance verification to meet industrial fastening standards.
6.Sorting, Packaging & Warehousing:
6.Sorting, Packaging & Warehousing:
Automatically sort and count qualified black oxide flat head tapping screws by complete specifications. Adopt dust-proof, moisture-proof and anti-extrusion standardized packaging to protect thread teeth and surface finish from damage and scratches. All finished products are labeled with specification and batch information, classified and stored in standardized warehouses, and delivered after strict final inspection.
Our NXF GROUP advantage as follow
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
Packing & Delivery
Packing
Delivery
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals,machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories.Established in1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material)
Certification
FAQ
1.Who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4.Why should you buy from us not from other suppliers?
Our advantage:
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4.Why should you buy from us not from other suppliers?
Our advantage:
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great
advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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Phone
+8613917160311
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+8613917160311
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