In this guide
India is one of the world's major fastener-producing countries. Clusters in Punjab (Ludhiana and Jalandhar), Maharashtra, Gujarat and Tamil Nadu supply hex bolts, nuts, washers, threaded rods and anchor bolts to construction, automotive and machinery buyers around the world. Prices are competitive and capacity is large, but the quality of what you receive depends heavily on how clearly you specify it. This guide walks through what to decide, and what to write down, before you request quotes.
1. Start with the standard, not the product name
"M12 hex bolt" is not a specification. Two factories can both supply an "M12 hex bolt" that differ in thread length, head height, strength and finish. Always name the dimensional standard:
- Hex bolts: DIN 931 / ISO 4014 (partially threaded) or DIN 933 / ISO 4017 (fully threaded). For North American buyers, ASME B18.2.1 heavy hex or hex cap screws.
- Hex nuts: DIN 934 / ISO 4032, or heavy hex nuts to ASTM A563 / A194 for structural and pressure applications.
- Washers: DIN 125 / ISO 7089 flat washers, DIN 127 spring washers, DIN 9021 large-diameter washers.
- Threaded rods: DIN 975 (1 m or 3 m lengths are common).
If you are buying to a drawing, send the drawing. If you are replacing an existing part, send a photo with a ruler and the marking on the head.
2. Define the grade (property class) and material
Strength is defined by the property class marked on the bolt head. For carbon-steel metric bolts the common classes are 4.6, 5.6, 8.8, 10.9 and 12.9. The first number relates to tensile strength and the second to the yield ratio. Nuts have matching classes (for example class 8 nuts with 8.8 bolts).
For corrosion resistance, stainless steel is specified as A2 (304) or A4 (316), usually with a strength class such as A2-70 or A4-80. Always state whether you need carbon steel, alloy steel or stainless, because the price difference is significant.
3. Choose the surface finish
Finish affects corrosion life, appearance and sometimes thread fit. The most common options are plain (self-colour or lightly oiled), zinc electroplated with a passivation colour, hot-dip galvanised (HDG), black oxide, and zinc-flake coatings. Each has trade-offs. We explain them in detail in our fastener coatings guide.
4. Ask for the right test certificates
For anything structural or safety-related, request a mill test certificate (MTC) for the raw material and a test report for the finished fasteners covering hardness, tensile or proof load and coating thickness. Inspection certificates to EN 10204 type 3.1 are a common request from European buyers. Decide in advance whether you also want third-party inspection before shipment.
5. Specify packing and marking
Fasteners are heavy and dense, so packing matters. Typical export packing is a fixed count per inner box (for example 100 or 200 pieces), inner boxes in a 5-ply carton, and cartons strapped on a fumigated or heat-treated wooden pallet. Tell the supplier:
- pieces per box and boxes per carton;
- labels: your part number, size, grade, finish, quantity and batch number;
- maximum carton weight (many warehouses prefer under 20–25 kg);
- pallet type and maximum pallet height.
6. Quantities, MOQ and lead time
Standard sizes in common grades are often available in smaller lots, while special lengths, coatings or grades need a production run with a minimum quantity. Lead times for made-to-order fasteners typically range from a few weeks to a couple of months, depending on raw-material availability, heat treatment and plating. Always confirm the lead time in the quotation, not verbally.
7. Choose your Incoterm and port
Most fastener shipments travel by sea from Nhava Sheva (JNPT), Mundra or Chennai. Decide whether you want the price FOB Indian port (you arrange the ocean freight) or CIF/CFR your port (the seller arranges it). Our Incoterms guide explains the difference.
Your fastener RFQ checklist
| Item | Example |
|---|---|
| Product & standard | Hex bolt, DIN 933 / ISO 4017 |
| Size | M12 × 50, coarse pitch |
| Grade / material | Class 8.8 carbon steel |
| Finish | Zinc plated, clear (trivalent) passivation |
| Quantity | 20,000 pcs per size |
| Packing | 100 pcs/box, cartons on pallets |
| Documents | MTC + test report, EN 10204 3.1 |
| Delivery | CIF Jebel Ali, within 6 weeks |
Send us this information and we will check feasibility, approach suitable Indian manufacturers and come back with comparable quotations.
Frequently asked questions
Are Indian fasteners good quality?
India has many export-oriented fastener manufacturers supplying automotive, construction and machinery customers worldwide. Quality varies between factories, so specify the standard, grade, finish and test certificates clearly and check samples before bulk production.
What is the minimum order for fasteners from India?
It depends on the item. Standard sizes in common grades may be available in smaller lots, while special lengths, grades or coatings usually need a minimum production run. The MOQ is confirmed in each quotation.
Which documents should I ask for?
For structural or safety-related fasteners, ask for the raw-material mill test certificate, a finished-product test report (hardness, proof load, coating thickness) and, if required, an EN 10204 3.1 inspection certificate.
Need a quote for this product?
Send us your specification. We'll check it, approach suitable Indian manufacturers and reply with comparable quotes. Free, no obligation.