Carbon Steel Fasteners

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Thabiso Steel is a reliable manufacturer and supplier located in Cape Town, South Africa, focusing on top-notch Alloy Steel Gr 12.9 Fasteners that are built for outstanding strength, durability, and precision. Known for its dedication to international quality standards and precision engineering, Thabiso Steel offers fasteners that provide remarkable tensile strength, hardness, and dependability in tough industrial settings. These fasteners are perfect for sectors like automotive, construction, oil and gas, and heavy machinery, where secure and long-lasting connections are a must. Thabiso Steel guarantees consistent quality, performance, and safety in every Alloy Steel Gr 12.9 Fastener they produce.

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Carbon Steel Fasteners

CS Nuts And Bolts

Low Carbon Steel Fasteners

What is Carbon Steel Fasteners?

Alloy Steel Gr 12.9 Fasteners are mainly made from high-grade carbon steel, with carefully controlled amounts of chromium, molybdenum, and other alloying elements. This specific blend boosts their tensile strength, hardness, and wear resistance. The fasteners boast an ultimate tensile strength of about 1,200 MPa and a yield strength of roughly 1,080 MPa. They also offer excellent toughness, fatigue resistance, and dimensional stability, making them perfect for high-stress and high-load applications where mechanical reliability is crucial.

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Carbon Steel Fasteners Specification

Standard	ASTM A193, A194 / ASME SA193, SA194
Sizes	“1/4 to 4”
Length	UPTO 5 METERS
Specification	IS, BS, ASTM
Type	Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc.

Carbon Steel Fasteners Chemical Composition

BS 970: 1955	Chemical Composition
BS 970: 1955	C %	Si %	Mn %	Ni %	Cr/strong> %	Mo %	S %	P %
EN3B	0.25Max	0.35Max	1.0Max	–	–	–	0.06Max	0.06Max
EN1A	0.07/0.15	0.10Max.	0.80/1.20	–	–	–	0.20/0.30	0.07Max
EN8	0.35/0.45	0.05/0.35	0.60/1.00	–	–	–	0.06Max	0.06Max
EN9	0.50/0.60	0.05/0.35	0.50/0.80	–	–	–	0.06Max	0.06Max
EN16	0.30/0.40	0.10/0.35	1.30/1.80	–	–	0.20/0.35	0.05Max	0.05Max
EN19	0.35/0.45	0.10/0.35	0.50/0.80	–	0.90/1.50	0.20/0.40	0.05Max	0.05Max
EN24	0.35/0.45	0.10/0.35	0.45/0.70	1.30/1.80	0.90/1.40	0.20/0.35	0.05Max	0.05Max

Carbon Steel Fasteners Mechanical Properties

Mechanical Properties ISO 898-1 Bolting
Grade	Material	Size Range	Tensile Strength MPa min.	Proof Strength MPa min.	Core Rockwell Hardness		Yield Strength MPa min.
Grade	Material	Size Range	Tensile Strength MPa min.	Proof Strength MPa min.	Min.	Max.	Yield Strength MPa min.
4.6	Low or Medium Carbon Steel	M5 – M39 3/16” – 1-1/2”	400	225	B67	B99.5	240
8.8	Medium Carbon Steel Q+T	M5 – M16 3/16” – 5/8” M18 – M39 11/16” – 1-1/2”	800 830	580 600	C22 C23	C32 C34	640 660
10.9	Alloy Steel Q+T	M5 – M39 3/16” – 1-1/2”	1040	830	C32	C39	940
12.9	Alloy Steel Q+T	M1.6 – M39 #0 – 1-1/2”	1220	970	C39	C44	1100

Carbon Steel Fasteners Equivalent Grades

High Temperature Bolting Steels
Grade	Name	Werkstoff Number	ASTM	BS	Temperature Use
Durehete 900 T22	42CrMo5.6	1.7233	–	BS1506 631-850	Up to 480ºC
Durehete 950 T31	40CrMoV4.6	1.7711	ASTM A193 B16	BS1506 671-850	Up to 510ºC
Durehete 1055 T41	20CrMoVTiB4.10	1.7729	–	BS1506 681-820	Up to 570ºC
25CrMo4	–	1.7218	–	–	Up to 400ºC
21CrMoV5.7	–	1.7709	–	–	Up to 540ºC
42CrMo4	–	1.7225	ASTM A193 B7	BS1506 630-860	Up to 450ºC

If You Are Looking To Buy High Quality
Pipes, Sheet, Fittings and Flanges

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Top Manufacturer and Supplier of
Carbon Steel Fasteners in Cape Town, South Africa

ThabisoSteel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Fasteners in Cape Town, South Africa. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.

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Types of Carbon Steel Fasteners

Carbon Steel Nuts

CS Fasteners

Carbon Steel Bolts

High Carbon Steel Fasteners

Carbon Steel Stud Bolts

Carbon Steel U Bolts

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Uses of Carbon Steel Fasteners

These fasteners are widely utilized in industries that require secure, high-strength connections. You’ll often find them in automotive assembly, heavy machinery, construction projects, and industrial equipment. They’re ideal for securing critical joints, structural components, and load-bearing parts in environments that experience high stress and vibration. With their exceptional mechanical properties, hardness, and resistance to wear and deformation, Alloy Steel Gr 12.9 Fasteners ensure long-lasting performance, safety, and reliability. They are vital for industries that need precision-engineered and robust fastening solutions in challenging operational conditions.