Merchant exporter Kolkata, IndiaHS heading 7318Terms FOB / CFR / CIF / FCA / CPT / DAP / CIPOn request EXW / DDPPorts Kolkata · Haldia · Nhava Sheva (JNPT) · Mundra · Chennai · Tuticorin · Visakhapatnam · Cochin · Kandla · KrishnapatnamAirports Kolkata · Chennai · Mumbai · DelhiIEC AvailableGSTIN AvailableMerchant exporter Kolkata, IndiaHS heading 7318Terms FOB / CFR / CIF / FCA / CPT / DAP / CIPOn request EXW / DDPPorts Kolkata · Haldia · Nhava Sheva (JNPT) · Mundra · Chennai · Tuticorin · Visakhapatnam · Cochin · Kandla · KrishnapatnamAirports Kolkata · Chennai · Mumbai · DelhiIEC AvailableGSTIN Available

Chakraborty OverseasFastener export · KolkataGet a quote

Range 02

Mild Steel Fasteners

This is the workhorse range: hex, flange and carriage bolts, the full nut family down to the individual patterns fabricators ask for by name, the complete washer set including star washers, the anchor range as our partner actually makes it, the specialist insert and profile hardware, and the purpose-made construction and machinery bolts.

Lines

55

Sizes

M3 – M48 bolts · nuts to M60

Applications

Fabrication · Construction · Furniture & fit-out · Materials handling

Enquire about this range Download catalogue

Grades: Bolts, nuts, studs and threaded rod: class 4.6, 4.8, 5.6 · washers and screws are size-rated, not property-class rated
Standards: DIN 933 / 931 (bolts) · DIN 934 (nuts) · DIN 125 (washers) · IS 1364 / 1367
Sizes: M3 – M48 for bolts · nuts to M60
Finish: Black, bright zinc, yellow zinc, hot dip galvanised, geomet
Typical use: General fabrication, construction, furniture, sheet metal

Shown in bright and yellow zinc — black, hot dip galvanised and geomet to order

Bolts

5 lines

Hex bolts

Grade: 4.6 / 4.8 / 5.6 / 5.8 / 8.8
Standard: IS 1363, DIN 931 / 933, ANSI B18.2.1

Hex flange bolts

Grade: 8.8 · serrated or plain flange
Standard: DIN 6921, IS 1364

Carriage bolts

Head: Cup head, square neck
Standard: DIN 603, IS 2609

Eye bolts

Type: Collared lifting and plain eye
Standard: DIN 580, IS 4190

Threaded rod, tie rod & studs

Type: Male full thread rod and cut studs
Standard: DIN 975 / 976

Screws

4 lines

Socket and CSK cap screws sit under High Tension & Precision — they are a high tensile line.

Self-tapping screws

Point: Type A, AB, B and self-drilling
Standard: DIN 7981, DIN 7504

Drywall screws

Thread: Coarse and fine, bugle head
Finish: Phosphated black, zinc

Chipboard screws

Drive: Pozi, Torx, Phillips
Finish: Yellow zinc, bright zinc

Machine screws

Head: Pan, cheese, CSK, raised CSK
Standard: DIN 84, DIN 963, ISO 7045

Nuts

5 lines

Hex & square nuts

Grade: Class 5, 6, 8 · thin and thick
Standard: IS 1363, DIN 934, DIN 557

Nylock nuts

Insert: Nylon ring, prevailing torque
Standard: DIN 985, DIN 982, ISO 7040

Dome nuts

Type: Closed cap, high and low crown
Standard: DIN 1587, DIN 917

Wing nuts

Type: Cold forged and cast pattern
Standard: DIN 315, IS 2687

Flange nuts

Type: Serrated and plain, MS & HT
Standard: DIN 6923

Individual nut types

6 lines

Patterns fabricators ask for by name — quoted as individual lines, not as a generic hex nut.

T slot nut

Use: Machine tables and profile slots
Standard: DIN 508, to drawing

Spring channel nut

Type: Long and short spring, plain
Use: Strut channel support systems

Long hex nut / bar nut

Type: Coupling nut, hex bar
Standard: DIN 6334

DF nut / hex bar nut

Type: Deformed thread, prevailing torque
Standard: DIN 980

Heavy hex 2H nut

Grade: ASTM A194 Grade 2H
Use: Flanged joints, structural sets

Thin hex / lock nuts

Type: Jam nut, half thickness
Standard: DIN 439, ISO 4035

Washers

6 lines

Plain washer

Type: Form A and heavy pattern
Standard: DIN 125, IS 2016

Spring washer

Material: MS and spring steel (En 42)
Standard: DIN 127, IS 3063

Star washer — internal

Type: Internal tooth serrated
Standard: DIN 6797 J

Star washer — external & overlap

Type: External tooth and overlap star
Standard: DIN 6797 A

Taper washer

Use: Channel and joist flanges
Standard: IS 5372 / 5374

Square washer

Use: Timber and structural packing
Standard: To drawing

Anchor fasteners

9 lines

The range as our partner manufactures it. Chemical anchors are not part of it.

Wedge anchor

Fixing: Through fixing into concrete
Finish: Bright zinc, yellow zinc, HDG

Drop-in anchor

Fixing: Flush internally threaded
Setting: Setting tool required

Nylon frame fixing anchor

Fixing: Frame and façade fixing
Body: Nylon sleeve with screw

Rawl bolt anchor

Type: Bolt projecting, loose bolt
Finish: Yellow zinc

Rawl hook anchor

Type: Eye and hook pattern
Use: Suspended services

Pin type anchor

Type: Hammer-set pin anchor
Finish: Yellow zinc

Sleeve anchor

Head: Hex, flange, CSK
Use: Concrete, brick, block

Anchor shell & anchor nut

Type: Shell with internal thread
Use: Ceiling and soffit fixing

Rawl goli

Type: Expansion ball anchor
Use: Light duty concrete fixing

Insert & rivet nuts

5 lines

Specialist items usually bought separately — carried here so they travel in the same container, on the same invoice.

Rivet / insert nuts

Body: Knurled, round and hex body
Head: Flat, reduced, CSK

Tee nut — prong

Type: Four prong, hammer in
Use: Timber and board

Wooden D insert nut

Type: Screw-in threaded insert
Finish: Yellow zinc, bright zinc

Clinch nut

Type: Self-clinching for sheet metal
Use: Panels and enclosures

Socket rivet / bush nut

Type: Bush and barrel socket rivet
Finish: Nickel, zinc

Cage, profile & channel hardware

5 lines

Cage nut

Type: Spring cage, square hole
Use: Racks and enclosures

Slotted profile T-nut

Type: Slide-in and drop-in T nut
Use: Aluminium profile systems

T-hammer bolt

Type: Quarter turn hammer head
Use: Profile and channel systems

T-hammer nut

Type: Hammer head nut
Use: Profile and channel systems

Flange nylock nut

Type: Serrated flange, nylon insert
Standard: DIN 6926

Furniture fittings

3 lines

Minifix items

Set: Cam, bolt, dowel and cap
Use: Knock-down furniture

Barrel nut

Type: Cross dowel, slotted drive
Finish: Zinc, nickel

Cabinet screw connector

Type: Male – female connector screw
Use: Cabinet and panel joining

Construction & machinery bolts

7 lines

Purpose-made lines for civil work, conveyors, elevators and earth-moving plant.

Foundation bolt

Type: L, J and plate type anchors
Standard: To drawing, IS 5624

U-bolt

Type: Round and square bend with nuts
Use: Pipe and axle clamping

J-bolt

Type: Hook bolt, threaded one end
Use: Concrete anchoring, tie down

Belt fasteners

Type: Bolted plate belt joiners
Use: Conveyor belt splicing

Elevator bucket bolt

Head: Flat countersunk, square neck
Use: Bucket elevators, grain handling

JCB furniture bolt

Head: Dome head, square neck
Use: Earth-moving attachments

Fala bolt

Type: Shuttering and scaffold bolt
Finish: Black, bright zinc

Other ranges

Stainless SteelRange 01 High TensionRange 03

Enquiries

Send us a specification

Size, grade, standard, finish and quantity is enough to start. If something is missing we will ask rather than assume.

Get a quote WhatsApp us