Carbon steel is an alloy which mostly consists of iron and carbon whereas stainless steel is an alloy of iron and chromium (and sometimes nickel) to greatly increase resistance to corrosion. We produce mild steel and different grades of carbon steel bolts that are applicable in general engineering use with a low load being applied.
Carbon steel is widely classified in relation to its quantity of carbon: Low carbon steel (mild steel), Medium carbon steel and High carbon steel. These alloys are directed into fasteners, metal parts of joining parts, which may be threaded (such as carbon steel bolts and carbon steel screws), or unthreaded (such as rivets or clips). The standard types of carbon steel fasteners are the hex head bolts, lag screws, socket head screws and expansion anchors.
Carbon Steel Bolts, Carbon Steel Nuts, Carbon Steel Anchor Fasteners, Carbon Steel Washers, CS Socket Screw Suppliers in India
Jade Special Metals are the foremost Carbon Steel Fasteners Manufacturers in India, which is known in the production and supply of a wide variety of industrial fasteners of high quality and the extensive ones.
Our product line is a broad assortment of carbon steel fasteners, such as carbon steel bolts, carbon steel nuts, carbon steel screws, washers, and studs. The Carbon steel Bolt material is the most widely used in manufacturing the Fastener, although it is important to choose the correct material that will be used in the application. These fasteners are available in a variety of shapes, sizes and grades of fasteners made of carbon steel, and high-strength and exotic alloys, extensively tested, under national and international standards, such as SAE, ASTM, ASME and ISO. We are determined to deliver the market with the global market of dependable and industrial grade carbon steel fasteners at the best competitive prices.
Carbon Steel Fasteners Types
Carbon Steel Bolts
Carbon Steel Bolts are used to hold together heavy structures, such as bridges, buildings, and machinery. They are also used in automotive & aerospace applications.
Carbon Steel Screws
In woodworking, construction, automotive industries, and various applications used Carbon Steel Screws. They come in various sizes & shapes, including wood screws, machine screws, & sheet metal screws.
Carbon Steel Washers
People use Carbon Steel Washers to distribute the load of a fastener and prevent damage to the surface being fastened. They are commonly used in automotive & construction applications.
Carbon Steel Pins
Using Carbon steel pins are align or secure two or more components together. They are commonly used in machinery, automotive, & aerospace industries.
Carbon Steel Nuts
Carbon Steel Nut is used in conjunction with bolts to hold together heavy structures. They are also used in automotive & aerospace industries.
Carbon Steel Fasteners, Bolts and Nuts Products
Our carbon steel fasteners, including carbon steel bolts and carbon steel nuts, are engineered for superior strength and reliability. These products meet stringent specifications for various applications.
Specification of Carbon Steel Fasteners
Our carbon steel fasteners are manufactured according to leading international standards, ensuring quality and interchangeability across global projects.
| Fasteners Material Specification | ASTM / ASME A/SA 193 / 194 |
|---|---|
| Standard | DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM and all International Standards |
| Fasteners/ Bolts Size | M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M30, M36 to M160 |
| Length | 3 mm to 200 mm |
| Bolts, Studs Threads: | METRIC, BSW, BSF, UNC, UNF or as required |
| Fasteners Standard: |
ANSI – American National Standards Institute
DIN: DIN 931, DIN 933, DIN 934, DIN 970 UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTF ISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards |
| Source of raw materials | Tata Steel, JSPL, RINL, Usha Martin, Dhamm Steel, Mukund Steel etc. |
| SCOPE OF MANUFACTURE |
|
| Fasteners In Form of: | Hex, Square, Round, Threading as per Gauge Etc. |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe, etc |
| bolting Test Certificate: | Manufacturer Test Certificate as per EN 10204 / 3.1 |
| Fasteners finishing: | Zinc (yellow, white, blue, black), black oxide, Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Stainless steel: Passivated Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Stainless Steel, Mechanically Applied coating and some special one like DACROMET |
| Production process | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| bolting materials Surface Coating: |
All surface finishes offered including Geomet & PTFE, Galvanised, Zinc, Electroless Nickel, Sherardized, Dacromet |
| Popular Types of Bolts | Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts etc. |
| Popular Types of Nut | Hex Head Nut, Eye Nut, Dome Nut, Wing Nut, T Nut, Panel Nut, Lock Nut, Coupling Nut, Square Nut, Acorn Nut etc. |
| Popular Types of Screw | Hex Head Cap Screws, Socket Set Screws, Anchor Screws, Blind Rivet, Socket Head Screws, Concrete Screws, Shoulder Screws, Panel Screws, Threaded Screws, Machine Screws etc. |
| Popular Types of Washer | Machine Washers, Flat Washer, Star Washers, Sealing Washer, Lock Washer, Split Washer etc. |
| Our stockyad location for fast delivery in India | Noida, Bengaluru, Pimpri-Chinchwad, Mumbai, Thiruvananthapuram, Tirunelveli, Vasai, Dhanbad, Chennai, Agra, Nagpur, Hyderabad, Kolkata, Coimbatore, Pune, Jaipur, Tiruchirappalli, Shivamogga, Ahmedabad, surat, Bhubaneswar, Thane, Nashik, Navi Mumbai |
| Fasteners Packing: | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
ASTM Bolts Grades
The Carbon steel Bolt material and nut material define the application range of the carbon steel fasteners.
| Standard / Material grade | C | MN | P | S | Si | CR | MO | AI | V |
|---|---|---|---|---|---|---|---|---|---|
| A 307 Grade B | 0.29 | 1.2 | 0.04 | 0.15 | – | – | – | – | – |
| 4.6 | 0.55 max | – | 0.05 | 0.06 | – | – | – | – | – |
| 5.6 | 0.13-0.55 | – | 0.05 | 0.06 | – | – | – | – | – |
| 6.8 | 0.15-0.55 | – | 0.05 | 0.06 | – | – | – | – | – |
| 8.8 | 0.25-0.55 | – | 0.05 | 0.06 | – | – | – | – | – |
| 10.9 | 0.25-0.55 | – | 0.05 | 0.06 | – | – | – | – | – |
Chemical Composition of Carbon Steel Fasteners
The specific Carbon steel Bolt material composition determines its strength, ductility, and application suitability. The composition varies by grade (e.g., A307 vs. A325).
|
BS 970: 1955 |
Chemical Composition |
|||||||
|---|---|---|---|---|---|---|---|---|
|
C % |
Si % |
Mn % |
Ni % |
Cr % |
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 |
|
BS 970 1991 |
BS 970 1955 EN |
AISI/SAE |
Werkstoff |
|---|---|---|---|
|
070M20 |
EN3B |
1020 |
1.0402 |
|
220M07 |
EN1A |
1113 |
1.0711 |
|
230M07 |
EN1A |
1213 |
1.0715 |
|
080M40 |
EN8 |
1040 |
1.1186 |
|
080A42 |
EN8D |
1042 |
– |
|
070M55 |
EN9 |
1055 |
1.0535 |
|
605M36 |
EN16 |
– |
– |
|
708M40 |
EN19 |
4140 |
1.7225 |
|
817M40 |
EN24 |
4340 |
1.6582 |
Mechanical Properties of Carbon Steel Fasteners
The mechanical properties are critical for determining the load-bearing capacity of carbon steel fasteners.
| 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. |
|
|
Min. |
Max. |
||||||
|
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 |
Equivalent Grades of Carbon Steel Fasteners
We manufacture carbon steel bolts grades and nuts that meet global equivalent standards for seamless integration into international projects.
| 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 |
Carbon Steel Fasteners Size Chart
We supply carbon steel fasteners sizes ranging from standard imperial (inches) to metric (mm) dimensions to suit varied requirements.
|
Copper Nickel 70/30 Bolt Type
|
SIZE
|
PROPERTY CLASS
|
TENSILE STRENGTH
|
STANDARD
|
|---|---|---|---|---|
|
Copper Nickel 70/30 Hex Head Bolt / Screws
|
M4 to M80
|
10.9
|
1040N / mm2 min
|
ISO 4017 (Full Thread)
ISO 4014 (Half Thread) |
|
Screws Type
|
SIZE
|
GRADE
|
ASME
|
ISO
|
ASTM
|
|---|---|---|---|---|---|
|
Socket Head Cap Screws
|
M1.6 to M64
|
12.9
|
B18.3.1 M
|
4762
|
A574M
|
|
Socket Low Head Cap Screws
|
M4 to M20
|
10.9
|
|
|
|
|
Socket Head Shoulder Screws
|
M6 to M24
|
012.9
|
B18.3.3M
|
|
|
|
Countersunk Socket Head Screws
|
M3 to M20
|
012.9
|
B18.3.5M
|
10642
|
F835M
|
|
Button Head Socket Screws
|
M3 to M12
|
012.9
|
B18.3.4M
|
7380
|
F835M
|
|
Flange Button Head Socket Screws
|
M3 to M10
|
012.9
|
|
|
F835M
|
|
Knurled Point Socket Set Screws
|
M3 to M20
|
45H
|
B18.3.6M
|
4029
|
F912M
|
|
Flat Point Socket Set Screws
|
M6 to M12
|
45H
|
B18.3.6M
|
4026
|
F912M
|
|
Dog Point Socket Set Screws
|
M3 to M20
|
45H
|
B18.3.6M
|
4028
|
F912M
|
|
Cone Point Socket Set Screws
|
M3 to M12
|
45H
|
B18.3.6M
|
4027
|
F912M
|
|
Plain Point Socket Set Screws
|
M3 to M20
|
45H
|
B18.3.6M
|
4029
|
F912M
|
|
Taper Pressure Plug
|
M8 to M22
|
–
|
|
|
Carbon Steel Screws HS Code
Understanding the carbon steel screws hs code is essential for international trade and customs classification of carbon steel fasteners.
| HS Code | Description |
|---|---|
| 7318 | The general heading for carbon steel fasteners (screws, bolts, nuts, etc. of iron or steel). |
| 73181400 | Specifically for self-tapping carbon steel screws. |
| 73181500 | Used for other screws and carbon steel bolts, whether or not with nuts or washers. |
| 73181900 | A more general code for “Other” threaded carbon steel fasteners. |
| 73181600 | Specifically for carbon steel nuts. |
Applications of Carbon Steel Fasteners
Carbon steel fasteners are essential in sectors demanding high mechanical strength and economy:
Construction
Automotive
Aerospace
Woodworking
Machinery / Mechanical
General Engineering
Carbon Steel Fasteners Price List
| Product | Price (US$) |
|---|---|
| Carbon steel bolt | 0.50 – 5.00 / Piece |
| Carbon steel metric fasteners clamp U bolt with nut screw | 0.30 – 0.50 / Piece |
| Carbon Steel Zinc Plated U Bolts | 0.01 – 0.05 / Piece |
| Carbon Steel 12 point hex flange bolt | 0.06 – 0.80 / Piece |
| DIN 912 Carbon Steel Pan Head Hex Socket Cap Screws and Fasteners | 0.01 – 0.99 / Piece |
| Carbon steel screw eye bolt with wing nut | 0.02 – 1.00 / Piece |
Please note that the price provided is an approximate cost for carbon steel fasteners in India. For the final, definitive CS fasteners price list, kindly contact us via email.
