Carbon Steel Fasteners

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Thabiso Steel stands out as a top manufacturer and supplier of Carbon Steel Fasteners right in Cape Town, South Africa. We pride ourselves on delivering high-quality fastening solutions tailored for industrial, construction, and engineering needs. Our carbon steel fasteners are designed with strength and durability in mind, ensuring they perform reliably and create secure connections in structural, machinery, and piping systems. At Thabiso Steel, we focus on precision manufacturing, rigorous quality control, and compliance with international standards, so you can trust that our fasteners will hold up under heavy loads and tough environmental conditions.

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Carbon Steel Fasteners

CS Nuts And Bolts

Low Carbon Steel Fasteners

What is Carbon Steel Fasteners?

Our Carbon Steel Fasteners are crafted from premium carbon steel, featuring carefully controlled levels of carbon, manganese, and other alloying elements. This combination gives them impressive tensile strength, hardness, and toughness. We offer a range of fasteners, including bolts, nuts, screws, studs, and washers, all designed to deliver exceptional mechanical performance while still being ductile and resistant to wear. Thanks to their consistent composition, you can count on uniform quality, and the material’s weldability and machinability make customization and installation a breeze across various industrial applications.

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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 Carbon Steel Fasteners are a go-to choice in construction, infrastructure, machinery, automotive, and industrial projects. They excel in structural assemblies, equipment installations, pipelines, bridges, and heavy machinery, ensuring secure and lasting connections. With their remarkable strength, durability, and resistance to wear and corrosion, carbon steel fasteners are a reliable and cost-effective option for industries that demand dependable fastening solutions for their toughest applications.