Specialty Fasteners & Fixings
5000+ SKUs in stock. DIN / ASTM / IS standards. All grades & finishes — manufactured in-house or dispatched same-day from our Mumbai warehouse.
Hex head, Allen, CSK, machine & self-tapping. Grade 4.6 to 12.9, SS 304/316, MS & alloy steel in all DIN/IS/ASTM sizes.
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Hex, lock, nyloc, flange, coupling & dome nuts. Plain, spring, structural & locking washers in all standard sizes and grades.
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Chemical, wedge, sleeve & toggler anchors for concrete, brick & masonry. All load ratings with full technical data sheets.
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Full & partial thread rods, B7 stud bolts, double-ended studs. Cut-to-length service. MS, SS and HT grades stocked.
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High-tensile structural bolt sets Grade 8.8 & 10.9 with matching nuts and washers. BIS marked. HSFG & TCB bolts available.
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Made-to-drawing in any profile, grade or finish. Full OEM supply with MTC documentation, labelling & export packaging.
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The Fastener Partner
Industries Trust
Grade One Fasteners is Mumbai’s leading ISO 9001:2015 certified manufacturer and supplier of specialty fasteners, bolts and hardware for bolted connections. We supply businesses with the products and services they need — when they need them.
Precision Manufacturing: Grade One creates specialty bolts and nuts with unmatched precision, adhering to ISO 9001:2015 standards with CNC thread-rolling and in-house NABL testing.
Fast & Reliable Delivery: 5000+ SKUs in ready stock. Same-day or next-day dispatch from our Mumbai warehouse. Pan-India logistics and export freight to 25+ countries.
Industry-Recognised Quality: Trusted across construction, infrastructure, power, marine and automotive sectors — known for consistent quality with full MTC documentation on every batch.
Meet Our Sales Team
Our team brings years of industry-specific knowledge. When you choose Grade One, you have an entire team supporting your project from enquiry to delivery.
What Our Customers Say
“Grade One is an awesome vendor. Quick response time, quality product, stellar pricing, top notch customer service. They’ve been our primary fastener supplier for over 3 years and never let us down.”
“These folks are awesome! Whether MTCs, quantities or on-time delivery — they get it right every time. There is always a friendly and helpful voice on the other end of the phone. Highly recommended.”
“Fast, reliable, always willing to work with you. Zero quality rejections in 3 years. Always my one-stop shop to help me get the job done. Competitive pricing, excellent MTC documentation.”
Recent Articles
SS 304 vs SS 316 Fasteners: Which Should You Specify?
When selecting stainless steel fasteners for industrial applications, choosing between SS 304 and SS 316 can significantly impact performance and lifecycle cost…
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Understanding Bolt Grade Markings: 4.6, 8.8, 10.9, 12.9 Explained
Bolt grade markings on hex heads indicate tensile strength. Here’s what each grade number means and how to specify the right grade for your application…
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Chemical vs Mechanical Anchors: Complete Engineer’s Guide
When to use chemical anchors vs mechanical anchors? A complete guide for structural engineers working with concrete and masonry substrates in high-load applications…
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Effects of High Temperatures on Industrial Grade Bolting Materials
ASTM A193 B7 and B16 — the most common alloys for industrial bolting. These Cr-Mo alloys share chemistry but behave differently under sustained high temperatures…
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