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STEEL

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CARBON STEEL SCREWS

Parmar Steel specializes in high-quality carbon steel screws, renowned for their durability and precision engineering. Crafted from premium-grade carbon steel, these screws offer exceptional strength and reliability, making them ideal for various industrial and construction applications. Parmar Steel screws are meticulously manufactured to exacting standards, ensuring consistent performance and secure fastening. Whether used in automotive assembly, infrastructure projects, or household repairs, these screws deliver superior grip and longevity. Available in a variety of sizes and configurations, Parmar Steel carbon steel screws cater to diverse needs with a promise of robustness and efficiency, backed by a legacy of craftsmanship and innovation.

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: ● ANSI B 18.2.4 2M, ANSI B 28.2.4 1M, ● Stud Bolt length are defined in ASME B16.5 standard, ● Hex nuts are defined in ASME B18.2.2, ● ASME B18.5, 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	Hot Forged Fasteners, Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm lg, CNC Machined Fasteners, Nut / Bolt; up to M100 / 4” Dia, up to 1500mm lg
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	Teflon Coated Fasteners, Phosphate Coated Fasteners, Zinc Coated Fasteners, Ptfe Coated Fasteners, Xylon Coated Fasteners, Cadmium Coated Fasteners, Hot Dipped Galvanizing Coated Fasteners, 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

Carbon Steel Bolts Size Chart

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	–

Nuts Type	SIZE	PROPERTY CLASS	STANDARD
Hex Nut	M6 to M42	10	ISO 4032
Nylock Nut	M6 to M20 (Gr.8), M10 to M24 (Gr.10)	8 & `10	DIN 982
Nylock Nut	M6 to M20 (Gr.8), M10 to M24 (Gr.10)	8 & 10	DIN 985
Hex Weld Nut	M6 to M12	8	DIN 929

BS 970: 1955	Chemical Composition
BS 970: 1955	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

Mechanical Characteristics of Carbon Steel Self Drilling Screws

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

Equivalent Material Grade Of Astm A307 Gr A Hex Bolt

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

We Shine For Premier Quality Product

The company has over two decade long record of servicing customers in India as well as all over the world. The company attaches significant emphasis on ensuring adherence to quality standards at all levels.

The basic thrust of the quality philosophy is summed up in the company's Quality Policy which serves as the bench mark of all functions executed by the company. Strict quality assurance system is being followed in all our departments and Total Quality Management is applied to streamline and all the procedures and practices in operation to achieve high standard of efficiency.