Description

Stainless Steel Eye Bolts | Forged SS Eye Bolts – Manufacturer & Exporter from India

Stainless Steel Eye Bolts and Forged SS Eye Bolts from Stainless Steel Fittings India are precision-manufactured lifting and rigging fasteners designed for high-load, corrosion-critical environments. Manufactured in compliance with DIN 580, ASME B18.15, and BS 4278, these forged eye bolts deliver consistent tensile strength, dimensional accuracy, and long-term reliability for industrial lifting, marine, petrochemical, and construction applications. Available in grades SS 304, SS 316, and SS 316L, with pricing starting at US$ 11.50 / kg for SS 316.

Product Overview

What Are Forged Stainless Steel Eye Bolts?

A forged stainless steel eye bolt is a one-piece, closed-loop lifting fastener produced through hot or cold forging processes that align the grain structure for maximum tensile and shear load capacity. Unlike cast equivalents, forged eye bolts resist crack propagation under dynamic and shock loading. Standard configurations include plain shank eye bolts, shoulder type eye bolts, machinery eye bolts, lag eye bolts, and swivel eye bolts. The shoulder-type variant is mandated for angular loading applications as per ASME BTH-1 lifting device standards.

Material Grades and Corrosion Resistance

Grade SS 316 / 316L eye bolts contain 2–3% molybdenum, providing pitting and crevice corrosion resistance in chloride-rich environments including offshore platforms, marine rigging, and coastal installations. Grade SS 304 eye bolts are suited for general industrial, food-grade, and pharmaceutical lifting applications. Grade SS 316Ti (titanium-stabilized) and SS 317L are available for elevated-temperature and aggressive chemical service. All grades pass ASTM A276, A479, and A193 B8M bolt material specifications.

Dimensional Range and Metric / Imperial Variants

Stainless Steel Fittings India manufactures forged eye bolts from M6 (1/4″) to M64 (2-1/2″) thread diameter, with shank lengths from 20 mm to 300 mm. Thread forms include ISO metric coarse (M), UNC, UNF, and BSW. Working Load Limits (WLL) range from 0.05 tonnes (M6) to 12.5 tonnes (M64) per DIN 580. Shoulder eye bolt variants provide 50% higher angular WLL versus plain shank types, making them essential for multi-leg sling configurations in EOT cranes, jib cranes, and gantry lifting equipment.

Surface Finish Options

Available surface treatments include: electropolishing (Ra ≤ 0.4 µm for pharmaceutical/hygienic use), passivation (ASTM A967 / AMS 2700), bead blasting, mirror polishing, and black oxide. Electropolished SS 316L eye bolts are widely specified in FDA/EHEDG environments. Passivation removes free iron and enhances native chromium oxide passive film, critical for offshore and marine lifting applications.

Standards Compliance for Lifting and Safety

All forged SS eye bolts are manufactured per DIN 580, DIN 582 (eye nuts), ASME B18.15, BS 4278, and ISO 3266 dimensional standards. Structural integrity and WLL ratings are validated per EN 1677-1, ASME BTH-1, and DNV-ST-E271 offshore lifting gear standards. Proof load testing, batch material traceability (MTR), and third-party inspection (TPI) by SGS, Bureau Veritas, or Lloyd’s Register are available on request.

Industry-Specific Design Variants

Custom-engineered variants include: weld-in eye bolts for vessel nozzle installations, forged pad eye plates for structural steel lifting, drop-forged swivel eye bolts for dynamic load applications, and stainless steel eye nuts (DIN 582) as complementary components. Non-standard bore sizes, left-hand threads (LH), and PTFE-coated shanks for insulation applications are produced per buyer drawings under ISO 9001:2015 and AS/NZS 4991 certification requirements.

Packaging, Marking, and Certification

Each forged eye bolt is individually marked with grade, WLL, manufacturer code, and batch number per EN 1677 and ASME requirements. Export packaging uses moisture-proof polyethylene bags with silica gel desiccant inside wooden crates for sea freight compliance. Documents supplied include Mill Test Report (EN 10204 3.1 / 3.2), dimensional inspection report, hardness certificate, and NABL-accredited laboratory test reports. Country of origin: India. HS Code: 73181500.

Key Features

• One-piece closed-ring forged construction – no weld seam failure risk
• Full traceability: Heat number, MTR, and chemical composition per EN 10204 3.1
• Proof load tested to 2× WLL per DIN 580 and ASME B18.15
• Available in shoulder and plain shank designs for inline and angular loading
• Thread gauging per ISO 1502 / ASME B1.1 on 100% of production
• Dimensional inspection per DIN 580 on CNC coordinate measuring machine (CMM)
• Electropolished SS 316L variants for pharmaceutical/hygienic/GMP lifting
• Custom engineering for non-standard WLL, thread forms, and shank extensions

Grain Flow Integrity via Forging

Hot forging at 1100–1200°C for austenitic stainless steel followed by solution annealing at 1040–1100°C and water quench ensures homogeneous grain structure, elimination of micro-porosity, and superior fatigue resistance under cyclic loading. Tensile strength of forged SS 316 eye bolts: min. 515 MPa (75 ksi); Yield strength: min. 205 MPa (30 ksi); Elongation: min. 40% per ASTM A276.

Shoulder Type vs. Plain Shank Performance

Plain shank (collar-less) eye bolts per DIN 580 are rated only for straight-line (0°) lifting. Shoulder/collar-type eye bolts per ASME B18.15 retain 100% WLL at 0° and are rated to 50° angular load per ASME BTH-1 guidance. Misapplication of plain shank eye bolts in angled rigging configurations is a primary cause of catastrophic lifting failures documented in HSE incident reports. Stainless Steel Fittings India supplies technical data sheets clearly specifying applicable load angles for each product variant.

Corrosion Performance Comparison

In salt spray testing per ASTM B117, SS 316 electropolished eye bolts demonstrated zero red rust after 1,000 hours of exposure, outperforming hot-dip galvanized carbon steel equivalents (which fail at 200–400 hours). This makes forged SS 316 eye bolts the specification choice for offshore oil rigs, coastal power stations, desalination plants, chemical processing vessels, and marine vessel deck equipment where lifting gear replacement is costly and safety-critical.

Traceability and Quality Management

Stainless Steel Fittings India operates under ISO 9001:2015 quality management systems with full batch traceability from raw material billet to finished product. Each production lot maintains heat number linkage to chemical analysis, mechanical testing, and dimensional records. NABL-accredited third-party mechanical testing (tensile, impact, hardness, bend) is available. PMI (Positive Material Identification) by XRF is performed on request per IOGP S-562 offshore material verification requirements.

Customization Capabilities

Engineering support is available for custom eye bolt designs per buyer specifications, including welding end geometry, oversized bore (for pin-and-shackle connections), non-standard pitches, ACME thread forms, and integrated load cell interfaces. Prototyping turnaround is 7–10 working days. Production tooling amortized over minimum order quantities (MOQ) of 500 pieces per variant. Export to 40+ countries including USA, UAE, Singapore, UK, Australia, Germany, and Brazil.

Technical Specifications

Material Grade Equivalents

Product Types / Variants

Applications by Industry

Manufacturing Process

Raw material billets (SS 316 / 304) are cut to precise weights on automatic band saws, heated to forging temperature (1100–1200°C) in gas-fired continuous furnaces, and hot-forged on 250–1000 T hydraulic presses with precision closed dies. Post-forging, parts undergo solution annealing at 1040–1100°C and water quenching to restore full corrosion resistance per ASTM A484. Threads are rolled (not cut) for superior root strength and fatigue life. CNC thread rolling on ANCA or similar CNC equipment ensures pitch accuracy to ISO 4759-1 Class 8g. Final operations include passivation per ASTM A967, CMM dimensional inspection, and batch certification compilation.

Quality Standards and Certifications

Why Choose Stainless Steel Fittings India?

• 30+ years of specialized experience in stainless steel forged fasteners and fittings
• In-house forging, machining, threading, and testing under one roof – zero sub-contracting risk
• Full EN 10204 3.1/3.2 mill test reports with NABL-accredited mechanical test data
• Competitive pricing: SS 316 Eye Bolts from US$ 11.50/kg — ex-works Mumbai/Pune
• Export experience to 40+ countries; ECGC-backed export credit insurance
• Yoast SEO-rated technical data sheets and engineering drawings on request
• MOQ flexibility: 50 pieces for standard sizes; full production run minimums for custom
• Responsive technical support team: engineering consultation within 24 hours

Frequently Asked Questions (FAQ)

Q1: What is the difference between a shoulder eye bolt and a plain eye bolt?

A shoulder (collar) eye bolt has a raised machined collar at the base of the shank, which bears against the work surface and allows angular loading up to 45–50° without reducing WLL significantly. A plain shank eye bolt has no collar and must only be loaded inline (0°). Using plain eye bolts at an angle is a serious safety hazard.

Q2: What grade of stainless steel is best for marine eye bolts?

Grade SS 316 or 316L is the standard recommendation for marine and coastal environments due to its 2–3% molybdenum content providing superior resistance to chloride-induced pitting corrosion. For submerged or splash-zone service, electropolished SS 316L provides the highest corrosion performance.

Q3: Do you supply forged eye bolts with CE marking?

Yes. Eye bolts used as lifting accessories within the EU must comply with the Machinery Directive 2006/42/EC and Lifting Operations and Lifting Equipment Regulations (LOLER). We supply CE-marked SS eye bolts per EN 1677-1 with EC Declaration of Conformity on request.

Q4: What is the minimum order quantity (MOQ)?

MOQ is 50 pieces for standard DIN 580 / ASME B18.15 sizes in SS 304 and SS 316. Custom sizes, special threads, or non-standard grades require a minimum of 200–500 pieces depending on tooling requirements.

Q5: Can you supply eye bolts with ATEX certification for hazardous areas?

We supply non-sparking stainless steel lifting accessories that are inherently suitable for Zone 1/2 ATEX environments due to the austenitic (non-magnetic, non-sparking) nature of SS 316/304. Specific ATEX certification documentation can be provided on request.

Q6: What is the lead time for forged SS 316 eye bolts?

Standard sizes in SS 316: 7–14 working days ex-works. Custom sizes, non-standard threads, or special certifications: 3–5 weeks. Emergency procurement for power plant or offshore shutdowns can be discussed for expedited delivery at additional cost.

Q7: What thread inspection is performed?

All threaded shanks are inspected 100% using calibrated go/no-go thread gauges per ISO 1502 and ASME B1.1. Thread profile and pitch are verified on a Starrett optical comparator. Results are recorded in the dimensional inspection report supplied with each batch.

Q8: Are stainless steel eye bolts magnetic?

Austenitic grades SS 304 and SS 316 are essentially non-magnetic in annealed condition. Cold-working during forging can induce slight magnetism, but this does not affect corrosion resistance or mechanical performance. For MRI or electromagnetic-sensitive environments, low-permeability testing per ASTM A342 can be performed.

Q9: What is the price of SS 316 eye bolts per kg?

SS 316 Stainless Steel Eye Bolts are priced at US$ 11.50 per kilogram ex-works India. Exact pricing depends on size, quantity, surface finish, and certification requirements. Contact our sales team for a formal quotation with volume discounts.

Q10: Do you offer custom forged pad eye plates?

Yes. Custom forged stainless steel pad eye plates, lifting lugs, and weld-in eye inserts are manufactured per buyer drawings or engineering specifications. Material: SS 316/304. Proof load testing and EN 10204 3.2 certification available.

Equivalent Terms – International Languages

Related Products – Stainless Steel Forgings

• Stainless Steel Component Forging / Forged Parts
• Stainless Steel Forged Flanges
• Stainless Steel Forged Parts – Machined Forgings
• Stainless Steel Ball Forging
• Stainless Steel Investment Casting

Request a Quote – Forged SS Eye Bolts

Stainless Steel Fittings India supplies forged stainless steel eye bolts globally. Our technical sales team provides prompt quotations with full material traceability documentation. Current price: SS 316 Eye Bolts at US$ 11.50/kg ex-works India.

📧 Email: info@stainlesssteel-fittings-india.com | 📞 Phone: +91-22-XXXXXXXX

Serving EPC contractors, power utilities, electrical OEMs, and industrial distributors across USA, UAE, UK, Singapore, Germany, Australia, and 40+ countries worldwide.

{
“@context”: “https://schema.org”,
“@type”: “Product”,
“name”: “Stainless Steel Eye Bolts | Forged SS Eye Bolts”,
“description”: “Precision forged stainless steel eye bolts in SS 304, 316, 316L per DIN 580 and ASME B18.15. Manufacturer and exporter from India. WLL range 0.05T to 12.5T. Price: US$ 11.50/kg for SS 316.”,
“brand”: { “@type”: “Brand”, “name”: “Stainless Steel Fittings India” },
“manufacturer”: {
“@type”: “Organization”,
“name”: “Stainless Steel Fittings India”,
“address”: { “@type”: “PostalAddress”, “addressCountry”: “IN”, “addressRegion”: “Maharashtra” },
“areaServed”: [“US”,”AE”,”GB”,”SG”,”DE”,”AU”,”BR”,”IN”,”SA”,”QA”]
},
“category”: “Stainless Steel Forgings”,
“offers”: {
“@type”: “Offer”,
“priceCurrency”: “USD”,
“price”: “11.50”,
“priceSpecification”: { “@type”: “UnitPriceSpecification”, “price”: “11.50”, “priceCurrency”: “USD”, “unitText”: “kg”, “unitCode”: “KGM” },
“availability”: “https://schema.org/InStock”,
“seller”: { “@type”: “Organization”, “name”: “Stainless Steel Fittings India” }
},
“material”: [“SS 304″,”SS 316″,”SS 316L”,”SS 316Ti”],
“additionalProperty”: [
{ “@type”: “PropertyValue”, “name”: “Standard”, “value”: “DIN 580, ASME B18.15, BS 4278” },
{ “@type”: “PropertyValue”, “name”: “Thread Range”, “value”: “M6 to M64” },
{ “@type”: “PropertyValue”, “name”: “WLL Range”, “value”: “0.05T to 12.5T” },
{ “@type”: “PropertyValue”, “name”: “Origin”, “value”: “India” },
{ “@type”: “PropertyValue”, “name”: “HS Code”, “value”: “73181500” }
]
}