Hex Bolt
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Bolts
Industrial Bolts — ISO/DIN/IS Standards, Materials & Applications
Shop India’s most used hex & specialty bolts for structural steel, machinery, fabrication, automotive and MEP installations. We stock metric sizes (typically M6–M36, larger on RFQ) in carbon/alloy steel (8.8/10.9/12.9), and stainless A2/A4, with finishes including zinc, black oxide, HDG and Al-Zn flake (Geomet/Dacromet). Pair with Hex Nuts (ISO 4032), Flat/Spring Washers (ISO 7089/7090/7092/7093) and Threaded Rods (DIN 976).
Key Standards
- Hex Bolts (partially threaded): ISO 4014 / DIN 931
- Hex Screws (fully threaded): ISO 4017 / DIN 933
- Hex Flange Bolts: ISO 4162 / DIN 6921
- Weld Studs/Bolts: ISO 13918 (stud welding references)
Materials / Grades
- Carbon & Alloy Steel: Class 8.8 / 10.9 / 12.9
- Stainless: A2-70, A4-70/A4-80
- Specials: Brass, Silicon Bronze, Duplex (on RFQ)
Finishes / Options
- Zinc (clear/yellow/black), Black Oxide
- Hot-Dip Galvanised (HDG), Al-Zn Flake
- Coarse/Fine pitch, part/full thread, non-magnetic stainless
Browse Bolts by Type
Hex Bolt (Fully Threaded)
General-purpose hex fasteners to ISO 4017 / DIN 933 (fully threaded). Ideal for fabrication, plant maintenance and fixtures. Match with ISO 4032 nuts and ISO 7089 washers.
Partially Threaded Hex Bolt
The classic structural bolt to ISO 4014 / DIN 931 with an unthreaded shank for shear alignment. Preferred in machinery and structural connections.
Flange Head Hex Bolt
Integrated washer face per ISO 4162 / DIN 6921 for better load spread and fewer parts. Available serrated (anti-loosen) and plain faces for painted or delicate surfaces.
Coupling Bolt
Long-body bolts for joining flanges/rods and achieving alignment over distance. Often used with precision sleeves or dowels; request fine pitch where required.
Slotted Bolt
Slot-head drive or necked-slot variants used in adjustments, clamps and fixtures where tool access is limited or position is adjustable. Pair with spring/lock washers to resist loosening.
Square Bolt
Square-head/neck bolts for channels, timber and heritage fittings; provide high bearing area and anti-rotation in square holes or slots. Great for restoration and rail hardware.
Tamper-Resistant Bolt
Security drive styles (pin-hex, pin-Torx, tri-wing, two-hole) for public fixtures, panels and access covers. Choose stainless A4 for coastal or outdoor installations.
Weld Bolt
Projection/spot-weld bolts and studs for sheet-metal; aligned with ISO 13918 practices. Options with bosses, pilots and multiple projections for repeatable welds.
Popular Searches
- ISO 4017 Hex (Full Thread)
- ISO 4014 Hex (Partial Thread)
- DIN 933 Hex Screws
- DIN 931 Hex Bolts
- ISO 4162 Hex Flange Bolts
- DIN 6921 Hex Flange Bolts
- Grade 8.8 Hex Bolts
- Grade 10.9 Hex Bolts
- Grade 12.9 Hex Bolts
- Stainless A2 Hex Bolts
- HDG Hex Bolts
Applications
Structural steel & infrastructure (bridges, plants, renewables), OEM machinery, fabrication & frames, HVAC & MEP, automotive, agri-equipment, and marine. Select HDG/Al-Zn flake for outdoor corrosion, A4 for marine, and fine pitch for precision alignment.
- Gauge-verified threads & strength class checks; MTCs on request
- Bulk/contract pricing, RFQ support & GST invoicing
- Fast dispatch pan-India; export packing available
Request a Quote / Bulk Pricing
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