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Nut

Last Updated: July 25, 2026

Starting From 48Rs/Pcs

A nut is a fundamental internally threaded mechanical fastener designed to mate with male-threaded components such as bolts, studs, and threaded rods. It works by screwing onto the exposed threads of a matching bolt or stud, converting rotational torque into high axial compression that clamps joint members together securely. Nuts are available in various drive profiles—including hex, heavy hex, locknut, and flange configurations—to optimize wrench engagement, load distribution, and thread locking integrity across pressurized piping networks, heavy structural steel frames, and mechanical machinery.

Technical Specifications of Nut In India

Size / Thread Range M3 to M100 (Metric) / 1/8" to 4" (Imperial standard)
Thread Pitch UNC, UNF, UNEF, Metric Coarse, Metric Fine
Specification (All sizes available)
Nut Configuration Styles Standard Hex Nut, Heavy Hex Nut, Nylon Insert Lock Nut (Nyloc), Flange Nut, Coupling Nut, Wing Nut, Acorn / Dome Cap Nut, Slotted / Castle Nut, Weld Nut, Square Nut
Material Grades Carbon Steel: IS 2062, Class 4, 6, 8, 10, ASTM A563 Grade A/B/C/DH, ASTM A194 Grade 2H
High-Strength Alloy Steel ASTM A194 Grade 4, Grade 7, Grade 8M, Class 10.9, 12.9, ASTM A320 Grade L7M
Stainless Steel AISI 304 (A2-70/80), AISI 316 (A4-70/80), 316L, 321, 347, Duplex 2205, Super Duplex 2507
High Nickel Alloy Monel 400/K500, Inconel 600/625/718, Incoloy 800/825, Hastelloy C22/C276, Titanium Grade 2/5
Specification (All Grades available)
Standards & Specifications ASME/ANSI B18.2.2, DIN 934, DIN 985, ISO 4032, ISO 4035, BS 3692, ASTM A194
Surface Finish Plain Black / Oiled, Hot-Dip Galvanized (HDG), Electro-Zinc Plated, Teflon / PTFE Coated, Cadmium Plated, Yellow Zinc Passivated, Bright Passivated (SS)
Origin Indian / Imported

Sourcing Terms & Timeline

Payment Terms

Letter of Credit / Bank Transfer / Advance

Delivery Package

Mill Test Certificate (MTC) + Inspection Reports

Standard Delivery

2-5 Working Days in Maharashtra region

Custom Cuts Support

Custom length cutting & shearing facilities available

Verified Suppliers

Shrushti Metal

Verified Supplier
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Benefits and Application of Nut

Benefits

  • High Joint Compression and Pre-Load Maintenance: Generates exceptional clamping force across joint interfaces to maintain tight structural retention and prevent fluid or gas bypass in flanged connections.

  • Vibration and Back-Off Resistance: Specialized locking variants (such as nyloc, prevailing torque, and slotted castle nuts) resist loosening caused by continuous physical vibration and thermal cycling.

  • Non-Destructive Component Servicing: Allows easy mechanical tightening and straightforward disassembly during routine maintenance, enabling non-destructive inspection or hardware replacement.

    Applications

    Nuts are indispensable load-retaining fasteners deployed across every major industrial sector to assemble flanged piping connections, heavy structural frameworks, and high-vibration machinery skids. In oil and gas refining complexes and petrochemical plants, high-tensile ASTM A194 Grade 2H heavy hex nuts are paired with stud bolts to clamp high-pressure flanged joints, valve bodies, and vessel covers safely. Civil engineering and infrastructure projects utilize hot-dip galvanized high-strength structural hex nuts (ASTM A563/A490) to secure steel building trusses, highway guardrails, and bridge deck supports exposed to weathering. Thermal power plants and chemical processing facilities depend on high-temperature alloy steel and Stainless Steel (316/316L) lock nuts to secure steam turbines, boiler feed pumps, and chemical agitator bases that undergo constant vibration and intense heat expansion. Additionally, marine engineering platforms employ corrosion-resistant Super Duplex and High Nickel Alloy nuts across subsea manifolds, deck winches, and seawater pumping systems to provide reliable clamping power that withstands continuous saltwater exposure.

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Procurement Network

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VIVEK INDUSTRIES APEX INFRASTRUCTURE MUMBAI METRO METALLICS GODREJ METALS TATA INFRA
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Buyer reviews

"Excellent B2B platform. Sourcing high pressure pipe fittings from verified suppliers in Girgaon has saved us massive research hours."

Rajesh K. Shah

SHAH STRUCTURALS LTD.

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Ultrasonic Testing Reports

Nondestructive raw material testing certified by third party auditors.

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Hot Dip Galvanizing

Premium corrosion protective zinc coating applied to structural steels.

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Logistics & Site Unloading

Flat-bed truck logistics matching tight construction schedules in Mumbai.

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