Hex Nuts
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HEX NUTS

We are the Roll-Fast leading manufacturers of Hex Nut for the construction of Petrochemical Industries & general maintenance work on a daily basis. We offer thread Nuts in different grades like 8, 10, 12, 2, 2H, 2HM, 7, 7L, B16 etc. & we offer sizes from M10 to M100 or 1/2” to 4”. There are numerous grades and the heavy pattern is typically used for large diameter and high strength bolts.

What is Hex Nut?

A nut is a type of fastener with a threaded hole. Nuts are almost always used with a mating bolt to fasten multiple parts together. Hex nuts are one of the most common nuts available and are used with anchors, bolts, screws, studs, threaded rods and on any other fastener that has machine screw threads. Hex is short for hexagon, which means they have six sides. Hex nuts are also known as: finished hex nuts, hex full nuts.

These Hex Nuts are manufactured by us in Alloy Steel, carbon steel, stainless steel & Duplex Steel. Popular carbon steel grades include A 194 and A 320. Grades include 2, 2H, 2HM, 8, 8M, B8 (Class 1 and 2), A2-50, A2-70, A2-80, SS 316, SS 316S 31 etc. The requirements for these are mentioned in the American standard A 194 and A 320.

Roll-fast manufactures world class Hex Nut for use in petrochemical industry, these Nuts are manufactured as per Indian, European and American standard in Coating like Plain, Black and Hot Dip Galvanised (HDG), Geomat, Zinc Flake, Zinc Electroplating, Xylon, PTFE, Non-Metallic coating etc.

Hex Nuts are used with Stud bolts to extensively in petrochemical projects for flange joints in high temperature pipelines and also on rigs and offshore platforms in various parts of the world. Some of the major grades and sizes manufactured are given below -

Grade

Diameter

Type

Application area

ASTM A 194 Gr. 2, 2H, 2HM, 8, 8M

1/2" to 4"

M10 to M100

Ferratic steel

high temperature piping, flange joints, rigs and offshore platforms

8, 10, 12

1/2" to 4"

M10 to M100

Ferratic steel

high temperature piping, flange joints, rigs and offshore platforms

SS 316 / AISI 316, A2-50, A2-70

1/2" to 4"

M10 to M100

Ferratic steel

high temperature piping, flange joints, rigs and offshore platforms

SS 316 L / AISI 316 L

1/2" to 4"

M10 to M100

Ferratic steel

high temperature piping, flange joints, rigs and offshore platforms

316S311

1/2" to 4"

M10 to M100

Ferratic steel

For low temperature piping, flange joints and platforms

Threads are standard right-hand and unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine). Also metric thread with Right & Left-hand threaded Hex nuts are also available.

To ensure full thread engagement with the hex nut, bolts/screws should be long enough to allow at least two full threads to extend beyond the nut face after tightening. Conversely, there should be two full threads exposed on the head side of the nut to make sure the nut can be properly tightened.

Manufacturing

These Nuts are first cut as per weight requirement for and then the machining on both side with require height, we then do heat treatment on them in our factory using an advanced SQF sealed quench heat treatment furnace from DOWA Japan, the heat treatment furnace is SCADA controlled and provides 100% repeatability batch after batch. The heat treatment result is a perfect marten site after hardening and gives perfect results after tempering as per standard requirement. After heat treatment we complete the Tapping and then coating as per customer requirement and then final assembly.

We also manufacturers low carbon nuts, Nylock Nuts, Thin Nuts, Square Nuts, Round Nuts in M10 to M100 & 1/2” to 4” in plain, zinc plated and hot dip galvanised finish, we are exporting these Nuts to many countries like USA, Europe and middle east. We also distribute and market the following products in alloy steel, carbon steel and stainless-steel grades for the following products in ASME B18.2.2, ASME B18.2.6, ASME B18.2.6M, ISO 4032, BS 3692 etc.

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