We are the leading fastener and component suppliers to HVAC Industries. we have wide range of products as per requirements.

Threaded Rod, Stud Bolt, Hexagon bolts are the most used fasteners in HVAC construction. The Hex bolt & Threaded Rods are supplied with Hex Nut & washer.

What are HVAC Fasteners & Components?

They Fasteners used in hanging & assembling the HVAC Ducts & pipes are called HVAC fasteners. With experience of more than 15 years of catering to this industry, we at Roll-fast provide a catalogue of numerous bolts, nuts, studs and m any other types of fasteners used in this industry.

Some types of fasteners used are:

  • Hex bolts
  • Hex tap bolts
  • Button headed socket cap bolts
  • Hex nuts
  • Thread rod
  • Heavy hex nuts
  • Nylon insert lock nuts
  • Flat washers
  • Square washers
  • Stud Bolt
  • Sheet metal parts etc.

Full Threaded Rod according to DIN 975 & DIN 976, Hex bolt according to ISO 4014 & ISO 4017 with Hex nut according to ISO 4032 is primarily the dimensional standard for hex bolt & nut. This area the common fasteners used in HVAC industries.

We actively manufacture the following grade of fasteners :




Grade name



Hex Bolt

ISO 4014, ISO 4017

8.8, 10.9, 12.9

1/2” to 3”, M-16 to M-76


Heavy Hex Bolt

ASME B18.2.1, ASME B18.2.6

B7, B8, L7, B8M, B16

1/2” to 3”, M-16 to M-76


Stud Bolts

ASTM A193, ASTM A320

B7, B7M, B16, B8, B8M, B8T

1/2” to 3”, M-16 to M-76


Threaded Rods

DIN 975, DIN 976

L7, L7M, L43, B8, B8M, B8T, 8.8, 10.9

1/2” to 3”, M-16 to M-76


Heavy Hex Nuts

ASTM A194, ASTM A563, A320

2, 2H, 2HM, 4, 7, 7M, 7L, 8, 8M, A, B, C, DH

1/2” to 3”, M-16 to M-76


Hex Nuts

ISO 4032, BS 3692

8, 10, 12

1/2” to 3”, M-16 to M-76



ASTM F436, DIN 125, ISO

Type 1 & 2, MS, HV100 to 300, SS

1/2” to 3”, M-16 to M-76

Threaded rods made of galvanised steel are suitable for a wide range of applications. Available with threads M8 to M100 and in lengths of up to 6m. They are suitable for use with channel sections, beam clamps, pipe clamps, Ducting Work, or duct hangers. For Ducting work products used are Threaded Rod & Accessories consisting of flat & fender washers, hex nuts, bolts, and rod couplers. Threaded Rod to create a secure system for hanging ductwork and equipment.

Threaded Rods Coatings / Finish

All thread rods are commonly available in plain steel, hot dip galvanized, Yellow Zinc and zinc plated. Plain finish threaded rod is often referred to as "black" and it is raw, uncoated steel. Thread rods that will be exposed to the outside elements may need to be hot-dip galvanized to prevent corrosion. Zinc plating can also be used as a corrosion-resistant coating, though a hot-dip galvanized coating will provide greater corrosion-resistance. Zinc plating is commonly used for aesthetic purposes since it can be plated in multiple colours and provides a consistent and shiny coating. For other types of coating as per client's requirements.

Custom bolts & studs for the HVAC

HVAC Contractes needs fasteners it can use in joint connection during HVAC installation, and under other conditions that demand high-quality Fasteners. we provide mostly like Stud bolt, Hex bolts & nuts.

  • We are your one-stop source for non-standard fasteners cut to length and threaded to your exact application specifications. Our extensive inventory includes blanks in many grades of steel. We carry Stud Bolts up to 4" / M100 in diameter and 48" long, as well as Heavy Hex Nuts up to 4" / M100 in diameter.
  • We can make fasteners as per your requirements because we have in house hot forging capacity of M100 bolts manufacturing with high precision CNC machining.

We have a wide range of fasteners which are suitable for this very need. As a leading supplier of Hex Bolt, Full thread stud bolt, double end stud bolts and hex nuts, our fasteners conform to the strictest ANSI, ASME, BS, European, IS and ISO standards for ideal use in the harsh environments of the Sub Sea.

We can provide you Carbon Steel, Alloy Steel, Stainless Steel, Aluminium, Brass, Silicon Bronze Fasteners as per size or drawing you need.