Metric Grade 10.9 Screws Manufacturer & Exporter in India

Explore Metric Grade 10.9 Screws Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.

-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are Metric Grade 10.9 Screws?

Metric Grade 10.9 screws are high-strength carbon steel fasteners manufactured to ISO 898-1 and EN 20898-1 standards. These screws are quenched and tempered to achieve a minimum tensile strength of 1040 MPa, making them suitable for demanding structural and machinery applications where high preload and resistance to shear are critical.

Grade 10.9 screws are widely specified in automotive, heavy equipment, and industrial assemblies for their balance of strength, ductility, and cost-effectiveness. They are available in a variety of head styles and thread forms, including hex head, socket head cap, and countersunk, to suit diverse engineering requirements.

Quick Specifications

Material	Alloy Steel (Quenched & Tempered)
Grade	10.9
Material Standard	ISO 898-1 / EN 20898-1
Screw Standard (Metric)	DIN 912 / DIN 933 / ISO 4762 / ISO 4017
Thread Form	ISO Metric (Coarse & Fine)
Diameter Range	M5-M64
Tensile Strength	1040 MPa min
Yield Strength	940 MPa min
Hardness	32-39 HRC

? All screws supplied with EN 10204 3.1 certification. Third-party inspection available.

Complete the Fastener Set

Other Metric Grade 10.9 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Metric Grade 10.9 fastener range from certified alloy steel bar stock, including Metric Grade 10.9 Bolts, Metric Grade 10.9 Nuts, Metric Grade 10.9 Washers, Metric Grade 10.9 Studs, and Metric Grade 10.9 Threaded Rods. All Metric Grade 10.9 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.

Metric Grade 10.9 Bolts

Metric Grade 10.9 Nuts

Metric Grade 10.9 Washers

Metric Grade 10.9 Studs

Metric Grade 10.9 Threaded Rods

Technical Data

Metric Grade 10.9 Screws Dimensions, Sizes & Thread Standards

Metric Grade 10.9 Screws are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 912 (socket head cap), DIN 933 (hex head, full thread), ISO 4017 (hex head, full thread), and ISO 4762 (socket head cap). Custom lengths available in 5mm increments.

Socket Head Cap Screw Dimensions - Metric (DIN 912 / ISO 4762)

Size (M)	Pitch (mm)	Head Dia (mm)	Head Ht (mm)	Hex Socket (mm)	Min L (mm)	Max L (mm)
M5	0.8	8.5	5.0	4	8	60
M6	1.0	10	6.0	5	10	80
M8	1.25	13	8.0	6	12	100
M10	1.5	16	10.0	8	16	120
M12	1.75	18	12.0	10	20	150
M16	2.0	24	16.0	14	25	200
M20	2.5	30	20.0	17	30	250
M24	3.0	36	24.0	19	40	300
M30	3.5	45	30.0	22	50	400
M36	4.0	54	36.0	27	60	500
M42	4.5	63	42.0	32	80	600
M48	5.0	72	48.0	36	100	800
M56	5.5	85	56.0	41	120	1000
M64	6.0	95	64.0	46	140	1200

Dimensional & Material Standards

Standard	Covers	Thread
DIN 912	Socket head cap screws	Metric
DIN 933	Hex head screws, full thread	Metric
ISO 4017	Hex head screws, full thread	Metric
ISO 4762	Socket head cap screws	Metric
DIN 7991	Countersunk socket screws	Metric

Material Standard	Requirement
ISO 898-1	Mechanical properties
EN 20898-1	Mechanical properties
EN 10204 3.1	Mill test certificate
ISO 4042	Coating requirements

Material Chemistry

Metric Grade 10.9 Screw Chemical Composition

Metric Grade 10.9 Screws are produced from medium-carbon or alloy steel with carbon (0.15–0.55%), chromium, manganese, and boron additions controlled per ASTM and ISO 898-1. Carbon content and quench-and-temper heat treatment are the primary strength levers, delivering proof loads from 580 MPa (Class 8.8) to 970 MPa (Class 12.9).

Chemical Composition per ISO 898-1

Element	Composition (%)
Carbon (C)	0.20-0.55
Manganese (Mn)	0.30-1.60
Phosphorus (P)	0.035 max
Sulfur (S)	0.035 max
Silicon (Si)	0.15-0.55
Chromium (Cr)	0.30 max
Nickel (Ni)	0.30 max
Boron (B)	0.003 max

? All heats verified by spectrometry. Full traceability and 3.1 certification provided.

Why Metric Grade 10.9 Alloy Composition Matters for Screws

Carbon & Manganese — Strength & Toughness

The controlled carbon and manganese content ensures high tensile and yield strength while maintaining sufficient ductility for shock and vibration resistance in dynamic assemblies.

Silicon — Deoxidation

Silicon acts as a deoxidizer, improving the steels cleanliness and enhancing the fatigue life of Grade 10.9 screws under cyclic loading.

Low Phosphorus & Sulfur — Crack Resistance

Strict limits on phosphorus and sulfur minimize the risk of embrittlement and cracking, ensuring reliable performance in critical bolted joints.

Fastener Performance

Metric Grade 10.9 Screws Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Metric Grade 10.9 Screws per ASTM. Metric Grade 10.9 screws achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Screw Size	Dry (Nm)	Lubricated (Nm)	Clamp Load (kN)
M8	35	28	20
M10	70	56	32
M12	120	96	46
M16	295	236	90
M20	580	464	140
M24	1000	800	200
M30	2000	1600	320
M36	3500	2800	460

?? Anti-galling: Use molybdenum-based anti-seize for assembly. Lubricated values assume K=0.14. Avoid over-torquing to prevent thread stripping.

Industry Applications

Metric Grade 10.9 Screws Applications — Industries & End Uses

Metric Grade 10.9 Screws from RealBolt are specified across structural engineering, automotive, machinery, and pressure vessels where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.

Automotive & Heavy Vehicle Assembly

Metric Grade 10.9 screws are the industry standard for critical joints in automotive chassis, suspension, engine mounts, and transmission assemblies. Their high strength and fatigue resistance ensure safety and reliability under dynamic loads and vibration.

Construction & Structural Steelwork

Used for steel frame connections, machinery baseplates, and crane assemblies where high preload and shear strength are required. Grade 10.9 screws are preferred for bolted joints in bridges, towers, and heavy equipment.

Industrial Machinery & Equipment

Socket head and hex head screws for gearboxes, presses, pumps, and conveyor systems. Grade 10.9 provides the necessary strength for high-torque and high-load applications in manufacturing plants.

Wind & Renewable Energy

Employed in wind turbine nacelle assemblies, tower flanges, and solar tracker structures where high-strength, vibration-resistant fasteners are essential for long-term reliability.

Metric Grade 10.9 Screws Standards & International Certifications

Metric Grade 10.9 Screws from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, hardness test certificate, dimensional inspection report per ISO 4759, and proof load test records — available on request for all orders.

Standards

DIN 912 DIN 913 DIN 914 DIN 915 DIN 916 DIN 6912 DIN 7984 DIN 7991 ISO 4762 ISO 10642 ISO 14579 ASME B18.3 EN ISO 4762 IS 1367 SAE J933

Certifications

ISO 9001:2015EN 10204 3.1CE MarkingRoHS CompliantREACH

Buy Metric Grade 10.9 Screws from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Metric Grade 10.9 Screws — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.

Answers for Buyers

Metric Grade 10.9 Screws — Frequently Asked Questions

Browse expert answers to common questions about Metric Grade 10.9 Screws from RealBolt — covering property class, tensile and proof load, galvanizing embrittlement risk, surface finishes, and dimensional certification. Contact our technical team directly for project-specific guidance on Metric Grade 10.9 screws selection and pricing.

What standards are Metric Grade 10.9 screws manufactured to?

Metric Grade 10.9 screws are produced to ISO 898-1 and EN 20898-1 for mechanical properties, with dimensional standards including DIN 912 (socket head), DIN 933 (hex head), ISO 4017, and ISO 4762. Coating and surface finish requirements are per ISO 4042. Certificates of compliance and 3.1 MTCs are supplied with every batch.

What is the recommended anti-seize for Metric Grade 10.9 screws?

For Metric Grade 10.9 screws, use a molybdenum-based anti-seize compound (such as Molykote 1000 or Loctite LB 8012) to prevent galling and thread seizure during assembly. Avoid copper-based anti-seize if the screws are zinc plated, as it may cause galvanic corrosion.

Are Metric Grade 10.9 screws suitable for outdoor or corrosive environments?

Standard Metric Grade 10.9 screws are not inherently corrosion resistant. For outdoor or corrosive environments, specify zinc plated, hot-dip galvanized, or Geomet-coated screws. For severe corrosion, consider stainless steel or apply a suitable protective coating.

What is the minimum order quantity (MOQ) for Metric Grade 10.9 screws?

We supply standard Metric Grade 10.9 screws from single pieces for urgent needs. Custom sizes or finishes may require a minimum order of 10 kg or 100 pieces. Bulk discounts are available at 100, 500, and 1000 piece price breaks.

Industrial Cities We Serve:

Ahmedabad
Aurangabad
Bengaluru
Chennai
Coimbatore
Faridabad
Gandhidham
Greater Noida
Gurugram
Hazira
Hosur
Hyderabad
Jamnagar
Jamshedpur
Ludhiana
Mumbai
Mundra
Mysuru
Nagpur
Nashik
Navi Mumbai
Noida
Pune
Rajkot
Sanand
Surat
Thane
Tiruppur
Vadodara
Visakhapatnam

Countries We Export To:

US
Canada
Mexico
Germany
UK
France
Italy
Spain
Netherlands
Belgium
Poland
Sweden
Norway
Denmark
Turkey
UAE
Saudi Arabia
Qatar
Oman
Kuwait
Bahrain
South Africa
Egypt
Nigeria
Australia
New Zealand
Singapore
Malaysia
Indonesia
Thailand
Vietnam
South Korea
Japan
Brazil

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