Heavy Hex Nut Manufacturers in India

  • Heavy hex nuts are slightly larger and thicker than finished hex nuts. There are numerous grades and the heavy pattern is typically used for large diameter and high strength bolts.

  • Heavy Hex Nut Available Size M3 – M48 and also available in all customized sizes.

  • Standard of Heavy Hex Nut ASTM A194 Stainless Steel 304/304H/304L Heavy Hex Nut Fasteners, ASTM A182 SS 316/316Ti Fasteners, ASTM A194 SS 317/317L/321 Heavy Hex Nut, Carbon Steel ASTM A194 B6/B7 Heavy Hex Nut Fasteners, Alloy Steel ASTM A320 L7/L7A/L7B Heavy Hex Nut Fasteners, Copper 110 Heavy Hex Nut, Duplex steel S31803/ S32205 Heavy Hex Nut fastener, Hastelloy C22/C276/B2 Heavy hex nut, Incoloy 800/800H/800HT Heavy Hex Nut Fasteners, Inconel 600/601 Heavy hex nut, Monel 400/K500 Heavy Hex Nut

Heavy Hex Nut Manufacturers – Top Quality Heavy Hex Nut Suppliers in India!

  • Asiamet is a leading manufacturer, suppliers in India heavy hex nuts are thicker and wider than heavy hex nuts of the same size which makes them the strongest of comparably graded nuts. Their additional strength comes from increased thread engagement which is due to their thickness and greater resistance to dilation because of their larger width. The heavy hex nuts increased size yields larger bearing surface and improved wrench ability. Hex is short for hexagon which means they have six sides. Lock washers may use with heavy hex nuts.
  • Threads are standard right hand and unified inch coarse series or unified inch fine. Left hand threaded heavy hex nuts are also available see Left hand nuts. Heavy hex nut size refers to its nominal thread diameter. Typically sizes range from 1/4″ to about 3 1/2″. Size is specified in inches, usually fractional rather than decimal. Table 1 lists width across flats and across corners and thickness.
  • Width across flats which is wrench size, ranges from about 1.53 to 2.00 times the nominal heavy hex nut size and height is 0.938 to 0.986 times the size. Nuts that are 7/16″ and smaller are double (top and bottom) chambered (beveled) larger sizes may be double chambered or have a washer face bearing (bottom) surface and a chartered top.
  • To ensure full thread engagement with the heavy hex nut the bolt/screw 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.
Product Heavy Hex Nut
Size M3 – M48 and also available in all customized sizes
Die forging Closed die forging, open die forging and hand forging.
Threads Metric, BSW, BSF, UNC, UNF
Surface Finish Blackening, Cadmium zinc plated, Galvanized, Hot dip Galvanized, Nickel
Plated, Buffing, etc.
Price Terms Ex-Works, FOB, CIF, CFR, CNF
Latest Price Call +919619672006
Email sales@asiametsteel.com

Heavy Hex Nut Manufactures, Suppliers
  • Do you want to know how much does heavy hex nut cost? Do you want to know where you can get the best price and quality steel nut in India?

  • We are ready to provide you our quality products, fast delivery service and custom cut nut sizes. Send us your detailed inquiry to us, our professional staff will get back to you with our best solution and costs.

  • The experts here in this company are aimed to provide the best quality of nut as per the requirement and demand of customers.

What is a Heavy Hex Nut?

Heavy hex nuts are washer faced are slightly larger and thicker than standard hex nuts. The heavy hex pattern is typically used for large diameter and high strength bolts. Galvanized nuts are always tapped over-size to accommodate for the extra thickness added by the galvanizing process. Hex bolts are bolts with a hexagonal head on one end with no washer face on the bearing surface and a threaded shaft on the other end. The head of a heavy hex bolt is wider and thicker than that of a hex bolt. A heavy hex bolt goes with a heavy hex nut.

Grade of Heavy Hex Nut

  • Stainless Steel – Grade: ASTM 182 , ASTM 193, ASTM 194, B8 (304), B8C (SS347), B8M (SS316), B8T (SS321), A2, A4, 304 / 304L / 304H, 310, 310S, 316 / 316L / 316H / 316 Ti, 317 / 317L, 321 / 321H, A193 B8T 347 / 347 H, 431, 410
  • Carbon Steel – Grade: ASTM 193, ASTM 194, B6, B7/ B7M, B16, 2, 2HM, 2H, Gr6, B7, B7M
  • Alloy Steel – Grade: ASTM 320 L7, L7A, L7B, L7C, L70, L71, L72, L73
  • Brass – Grade: C270000
  • Naval Brass – Grade: C46200, C46400
  • Copper – Grade: 110
  • Duplex & Super Duplex – Grade: S31803, S32205
  • Aluminum – Grade: C61300, C61400, C63000, C64200
  • Hastelloy – Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
  • Incoloy – Grade: Incoloy 800, Inconel 800H, 800HT
  • Inconel – Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
  • Monel – Grade: Monel 400, Monel K500, Monel R-405
  • High Tensile Bolt – Grade: 9.8, 12.9, 10.9, 19.9.3
  • CUPRO-Nickel – Grade: 710, 715
  • Nickel Alloy – Grade: UNS 2200 (Nickel 200) / UNS 2201 (Nickel 201), UNS 4400 (Monel 400), UNS 8825 (Inconel 825), UNS 6600 (Inconel 600) / UNS 6601 (Inconel 601), UNS 6625 (Inconel 625),UNS 10276 (Hastelloy C 276), UNS 8020 (Alloy 20 / 20 CB 3)

ASTM Specifications for Heavy Hex Nuts Fasteners

A193 Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
A307  Carbon steel bolts and studs, 60,000 psi tensile strength.
A320  Alloy steel and stainless steel bolting materials for low temperature service.
A325 Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
A354 Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
A449  Quenched and tempered steel bolts and studs for general use.
A490  Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
F568  Standard for metric bolts, screws and studs that are used in general engineering applications
F593 Stainless steel bolts, hex cap screws, and studs.
F1554 Anchor bolts designed to anchor structural supports to concrete foundations
DIN 6914 10 Heavy Hexagon Structural Bolts

Heavy Hex Nut Specification

  • Range Size: (M6 – M48)
  • Different kinds of nuts available, M3 to M30 to be make by cold forming, M33 and up to be made by hot-forging
  • Different finish, such as bright, zinc plated, yellow zinc plated
  • Can be made as low carbon steel and high tensile
  • Mainly used for indoor and outdoor construction field
  • Special anchors can be supplied according to customers’ drawings or samples
  • Diameters: 3/8″ – 2-3/4″
  • Grades: A563 (grades A, C, and DH), A194 grade 2H
  • Finish : Auto Black , White Zinc Plating , Yellow Zinc Plating , Hot Dip Galvanized
  • Threading : Unc , Unf , Bsf, Bsw , Metric Thread With Fine Pitch

Heavy Hex Nut Dimensions

Nominal Width Across Flats (F) Width Across Corners (C) Heavy Hex Nut Thickness (H)
Size Basic Max Min Max Min Basic Max Min
4-Jan 2-Jan 0.5 0.488 0.577 0.556 15/64 0.25 0.218
16-May 16-Sep 0.562 0.546 0.65 0.622 19/64 0.314 0.28
8-Mar 16-Nov 0.688 0.669 0.794 0.763 23/64 0.377 0.341
16-Jul 4-Mar 0.75 0.728 0.866 0.83 27/64 0.441 0.403
2-Jan 8-Jul 0.875 0.85 1.01 0.969 31/64 0.504 0.464
16-Sep 15/16 0.938 0.909 1.083 1.037 35/64 0.568 0.526
8-May 1  1/16 1.062 1.031 1.227 1.175 39/64 0.631 0.587
4-Mar 1 1/4 1.25 1.212 1.443 1.382 47/64 0.758 0.71
8-Jul 1  7/16 1.438 1.394 1.66 1.589 55/64 0.885 0.833
1 1 5/8 1.625 1.575 1.876 1.796 63/64 1.012 0.956
1 1/8 1 13/16 1.812 1.756 2.093 2.002 1  7/64 1.139 1.079
1 1/4 2 2 1.938 2.309 2.209 1  7/32 1.251 1.187
1 3/8 2  3/16 2.188 2.119 2.526 2.416 1 11/32 1.378 1.31
1 1/2 2 3/8 2.375 2.3 2.742 2.622 1 15/32 1.505 1.433
1 5/8 2  9/16 2.562 2.481 2.959 2.828 1 19/32 1.632 1.556
1 3/4 2 3/4 2.75 2.662 3.175 3.035 1 23/32 1.759 1.679
1 7/8 2 15/16 2.938 2.844 3.392 3.242 1 27/32 1.886 1.802
2 3 1/8 3.125 3.025 3.608 3.449 1 31/32 2.013 1.925
2 1/4 3 1/2 3.5 3.388 4.041 3.862 2 13/64 2.251 2.155
2 1/2 3 7/8 3.875 3.75 4.474 4.275 2 29/64 2.505 2.401
2 3/4 4 1/4 4.25 4.112 4.907 4.688 2 45/64 2.759 2.647
3 4 5/8 4.625 4.475 5.34 5.102 2 61/64 3.013 2.893
3 1/4 5 5 4.838 5.774 5.515 3  3/16 3.252 3.124
3 1/2 5 3/8 5.375 5.2 6.207 5.928 3  7/16 3.506 3.37
3 3/4 5 3/4 5.75 5.562 6.64 6.341 3 11/16 3.76 3.616
4 6 1/8 6.125 5.925 7.073 6.755 3 15/16 4.014 3.862

Application of Heavy Hex Nut

  • Paper and Ports
  • Chemical and Sugar
  • Oil & Gas and Defense
  • Breweries and Railway
  • Oil Mills Petrochemical
  • Shipbuilding and Offshore
  • Construction and Fertilizers
  • Power Plant and Steel Plant
  • Mining Refineries and Nuclear Power
  • Cement Engineering Co. and Government Org.

Test Certificates

  • Manufacturer Test Certificate as per EN 10204 / 3.1B
  • Raw Materials Certificate, 100% Radiography Test Report
  • Third Party Inspection Report

Quality Assurance

Asiamet all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All forged fittings are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also make custom marking on our products.