Fasteners

Established in 2003, the Fasteners business vertical has integrated advanced and state-of-the-art manufacturing facilities at MIDC, Tarapur in Maharashtra. We are amongst the most modern and one of the largest manufacturers of HT Fasteners in the country.

manufacturing capacity of 30000 MT
certified under
ISO 9001:2015, ISO 14001:2015 AND ISO 45001:2018

Karamtara Fasteners offers a total systems approach to fastening solutions to the customers' requirements. We manufacture bolts, nuts, anti-theft bolts & nuts, studs, foundation bolts, U-bolts, plain and spring washers.

Our manufacturing facility in Tarapur has installed capacity of 30000 MT per annum. This plant manufactures HT & MS fasteners for Power Generation, Transmission & Distribution Industry, Telecom Tower Industry, Automobile Industry etc.

The manufacturing facility has both Hot Forging and Cold forging facilities. It is certified with ISO 9001:2008, ISO 14001:2004 and OHSAS 18001:2007 standards.

We source raw materials from Tata Steel, JSPL, RINL, Usha Martin, Dhamm Steel, Mukund Steel etc.

Click here to download Fastener Business Brochure

Approved by

RDSO
Diesel Locomotive Works
Central Railway
Western Railway
DFCC
CORE
BHEL

Hot Products

HSFG Structural Bolting Assemblies
Direct Tension Indicator Washers
Shear Studs with Ferrule
Hex head bolts nuts washers 8.8/10/9
Track Shoe Bolts

RANGE

SIZES: From M10 to M52
GRADES: From 4.6to 12.9as per various standards: IS, ISO, DIN, JIS, BS and ASTM, etc.
Finishes :Zinc Phosphate , HDG , Auto-Black , Bright Zinc plating , Zinc Flake

Picture	Description
	Hex Screw Sizes from: M12 to M24 Cold Forging Sizes from: M27 to M29 Hot Forging Grade: 4.6,5.6,6.8,8.8 As Per IS, DIN, JIS, ASTM and Customer Specification
	Bolts Sizes from: M12 to M24 Cold Forging Sizes from: M27 to M29 Hot Forging Grade: 4.6,5.6,6.8,8.8 As Per IS, DIN, JIS, ASTM and Customer Specification
	Nuts Sizes from: M12 to M24 Cold Forging Grade: 4,5,6,8 As Per IS, DIN, JIS, ASTM and Customer Specification
	Spring Washer Sizes from: M12 to M24 As per IS 3063, DIN 127
	Square Washer Sizes from: M12 to M24 As Per Customer Specification
	Pack Washer Sizes from: M12 to M24 As per IS 2016, DIN 126
	Step Bolt Sizes from: M16 to M24 Grade: 4.6,5.6,6.8,8.8 As Per IS 10238 and Customer Specification.

Item	Dimensions	Grades	Raw Materials
Transmission Line Tower Bolts Hexagon Bolts for Steel Structures, Steel Bolts for Steel Structures and Guard Rail Fasteners	Dia M 12 TO m24 Length 30 mm to 200 mm As per customer's specification	4.6, 5.6, 5.8, 6.8, 8.8 etc. As per customer's specification	Medium Carbon Steel, Plain Carbon Steel. As per customer's specification
Hex Head Bolts, Cup Head Square Neck Coach Bolts, T-Head Bolts, Anchor Bolts	Dia M 4 to M 72 Length 10 mm to 500 mm As per customer's specification	4.6, 5.6, 5.8, 6.8, 8.8, 10.9, 12.9 etc. As per customer's specification	Alloy Steel, Stainless Steel Medium Carbon Steel As per customer's specification
Socket Head Caps Screw, Low Head Socket Cap Screw, Socket and Slotted Counter Sunk Head screw	Dia M4 to M 64 Length 10 mm to 500 mm As per customer's specification	4.6, 5.6, 5.8, 6.8, 8.8, 10.9, 12.9 etc. As per customer's specification	Alloy Steel, Stainless Steel Medium Carbon Steel As per customer's specification
Hex Nuts, Thin Nuts, Slotted and Slotted Counter Sunk Head Screw	Dia M4 to M 64 As per customer's specification	4, 5, 6, 8, 10, 12 etc. As per customer's specification	Alloy Steel, Stainless Steel Medium Carbon Steel As per customer's specification
Fasteners suitable for Automotive and Earth moving equipment	Dia M 4 to M 64 Length 10 mm to 500 mm As per customer's specification	4.6, 5.6, 5.8, 6.8, 8.8, 10.9 etc. As per customer's specification	Alloy Steel, Stainless Steel Medium Carbon Steel As per customer's specifications

Fasteners

Approved by

Hot Products

RANGE

Business

Product Range and Applications: