Industrial fasteners for factories and maintenance teams
GODOWN sources industrial fasteners for plants across Delhi NCR: hex bolts and screws, socket head cap screws, nuts, washers, studs, anchors, circlips and pins, in the property class, finish and standard your drawing calls for. That covers 10.9 high-tensile bolts for a machine base, A4 stainless screws for wash-down equipment and chemical anchors for a new rack.
Fastener indents are long lists of small lines: twenty sizes for one overhaul, each needing the right standard, property class, length and finish. A wrong delivery usually traces back to a missing detail, such as an M12 bolt with no length or class, so the checklist below is worth following line by line. At GRN, check the head markings (8.8, 10.9, A2-70) against the indent.
GODOWN takes the whole list, small quantities included, and gets you competitive quotes on one PO per plant, delivered to your gate with a GST tax invoice. Short or wrong lines are handled as after-sales, so your store doesn't chase the vendor.
Fasteners we source for plants
Hex bolts and hex head screws
The general-purpose fastener for machine bases, flanges and structures. A bolt has a plain shank under the head and a screw is threaded up to it; ISO 4014 and ISO 4017 cover them, though the trade still says DIN 931 and DIN 933.
Socket head cap screws
Often called Allen bolts: a hexagon socket in a compact, high-strength head. Used in dies, jigs, fixtures and machine assemblies, usually in class 12.9 to ISO 4762 (DIN 912).
Nuts
Hex, heavy hex, flange and nylon-insert lock nuts, matched to the bolt: an 8.8 bolt takes a class 8 nut and a 10.9 bolt a class 10. Hot-dip galvanised bolts need nuts tapped oversize to suit.
Washers and locking elements
Plain washers spread the load under a head or nut. Spring, wedge-lock and tab washers are used where vibration could loosen a joint.
Studs and threaded rod
Double-ended studs for pump casings and valve bonnets, flange stud bolts (commonly ASTM A193 B7 with A194 2H nuts) and threaded rod cut to length for hangers and supports.
Anchor fasteners
Wedge, sleeve and drop-in anchors and chemical (resin) anchors fix machines, racks and steelwork to concrete. The anchor type, diameter and embedment depth decide what load it holds.
Circlips and retaining rings
Hold bearings, gears and pins in place on shafts and in bores. External circlips (for shafts) follow DIN 471 and internal ones (for bores) DIN 472, sized by the shaft or bore diameter.
Pins
Dowel pins locate mating parts precisely; split (cotter) pins, R-clips and spring (roll) pins lock clevis joints and shafts.
Machine and self-tapping screws
Small pan, countersunk and button-head screws for guards, panels, electrical enclosures and sheet metal.
What to put on a fasteners indent
Vendors quote the right part first time when the indent carries these. Missing details mean a round of calls before anyone can quote.
- Type and standard: hex bolt to ISO 4014 / DIN 931 (part-threaded) or ISO 4017 / DIN 933 (fully threaded), socket head cap screw to ISO 4762 / DIN 912, and so on. The standard fixes the head dimensions and thread length.
- Thread and size: metric coarse unless stated (M12), fine pitch written out (M12 × 1.25), and UNC, UNF or BSW threads for imported or older machines.
- Length in mm, measured under the head for most screws and overall for countersunk heads, plus thread length if it matters.
- Property class or material: 8.8, 10.9 or 12.9 for steel bolts with nuts of a matching class, or A2-70 and A4-70 for stainless (A4 is the 316 type, for corrosive and food areas).
- Finish: plain or black, zinc plated, hot-dip galvanised or zinc flake. Electroplating 12.9 screws risks hydrogen embrittlement, which is why many plants specify them plain or zinc flake.
- Quantity in pieces, and whether a part box is acceptable, since fasteners are often sold by the box or by weight.
- Head marking with the property class and maker's symbol, and test certificates for critical joints such as lifting points, cranes and pressure flanges.
- The machine or job, and a sample or photo for anything non-standard.
Buying fasteners through GODOWN
One partner
Fasteners on the same PO trail as every other category you buy, instead of another vendor to manage.
Competitive quotes
Benchmarked prices for each item before you commit, without your buyer calling around.
Your approvals
Requests follow the sign-off rules your plant already uses, with a record of every decision.
Tracked to your gate
An ETA on every order and a GST tax invoice with every delivery.
After-sales handled
Returns and replacements raised against the original order, and followed up for you.
Where it's used in a plant
- Machine bases, guards and frames in maintenance and machine shops.
- Pipe flanges, pump casings and valve bonnets in utilities.
- Panel and enclosure assembly in electrical maintenance.
- Racks, platforms and anchor fixing in stores and civil maintenance.
- Dies, jigs and fixtures in the toolroom.
Brands buyers commonly specify
- Unbrako
- LPS
- Sundram Fasteners
- Hilti
- Fischer
- Nord-Lock
Name a brand on the indent, or allow equivalents. What's quoted depends on the vendors who respond. Brand names belong to their owners.
Plants that buy fasteners
- Procurement for automotive and auto-component plants →
- Procurement for pharma and chemical plants →
- Procurement for FMCG and food processing plants →
Delivered across Delhi NCR
Noida · Greater Noida · Ghaziabad · Gurugram · Faridabad
Buying fasteners: common questions
What do 8.8, 10.9 and 12.9 mean on a bolt head?
They are property classes that state a steel bolt's strength. The first number is the nominal tensile strength in hundreds of MPa, and the second is the ratio of yield to tensile strength times ten: an 8.8 bolt has a nominal tensile strength of 800 MPa and yields at about 640 MPa. A 10.9 bolt is rated 1,000 MPa and a 12.9 bolt 1,200 MPa. Pair each with a nut of matching class and copy the class from the old head onto the indent.
What is the difference between DIN 931 and DIN 933 bolts?
Both are hex head fasteners, but DIN 931 is partly threaded and DIN 933 is threaded all the way to the head. Their current ISO equivalents are ISO 4014 and ISO 4017, and the Indian equivalents are IS 1364 Parts 1 and 2. Use a part-threaded bolt where the plain shank should sit across the joint, and a fully threaded screw where you need thread along the length, such as into a tapped hole.
What is the difference between A2 and A4 stainless steel bolts?
A2 fasteners are austenitic stainless steel of the 304 type, and A4 of the 316 type, which adds molybdenum for better resistance to chlorides and many chemicals. A2 suits general and indoor wash-down use; A4 is the usual choice near salt, chlorinated cleaning agents and acids. The number after the dash is strength: A2-70 means 700 MPa tensile. Stainless threads can gall, so many plants use anti-seize on assembly.
Can I buy fasteners in small quantities for maintenance?
Yes. Raise the indent in pieces and say whether a part box is acceptable, since many fasteners are sold by the box or by weight. Through GODOWN, a mixed indent of twenty sizes gets competitive quotes and still lands on one PO per plant, delivered with a GST tax invoice, so small maintenance quantities don't turn into twenty small purchases to track. Group the sizes for one job or overhaul on the same indent so they arrive together.