Bolts
Manufacturer
& Exporter
What We Mean by “Bolts”
A bolt is, by strict definition, a threaded fastener designed to be used with a nut or a tapped hole to clamp two or more parts together — distinct from a screw, which typically forms or engages its own thread directly into the material. In practice, “bolts” covers a wide family of head and drive designs, each suited to a different combination of access, torque, load, and appearance requirement.
We manufacture the full range in-house: hex bolts (the default for general assembly), Allen/socket head bolts (for recessed or flush applications), eye bolts (for lifting and rigging), U-bolts and J-bolts (for pipe clamping and anchoring), flange bolts (for integrated washer-face bearing), carriage bolts (for smooth, tamper-resistant exteriors), shoulder bolts (for precision pivot and linkage applications), T-head bolts, foundation bolts, structural bolts, and high-tensile grades.
Every bolt type is available across our full material range — carbon steel, stainless 304/316, alloy steel (A193 B7 and similar), duplex and super duplex, and exotic alloys including Inconel, Monel, and Hastelloy — manufactured to ISO 9001:2015 with full mill test documentation.
One Supplier, Every Bolt Type & Material
Full Material Range
From general-purpose carbon steel through to exotic alloys like Inconel and Monel — the same bolt design available across the full corrosion and strength spectrum.
Every Common Head Type
Hex, Allen, eye, U/J-bolt, flange, carriage, shoulder, T-head, foundation, structural, and high-tensile — sourced from one manufacturer instead of several.
ISO 9001:2015 QC & Documentation
Full mill test certificates, dimensional inspection, and certificate of conformance on every shipment, regardless of bolt type or material.
Custom & Non-Standard Bolts
Special lengths, non-standard threads, and drawing-to-part manufacturing for requirements outside our published catalogue range.
Choosing the Right Bolt Head Type
Once the material is decided, the next real decision is head and drive type — and it’s one buyers often default on rather than choose deliberately. The right head type depends on access, torque requirement, appearance, and whether the fastener needs to resist tampering or rotation during installation. The comparison below is the one we walk through with buyers who aren’t sure which head type actually fits their application.
| Property | Hex Bolt | Allen (Socket) Bolt | Carriage Bolt | Flange Bolt |
|---|---|---|---|---|
| Drive Type | External hex, wrench/spanner | Internal hex, Allen key | Square shank, no drive (self-locking) | External hex, integrated washer face |
| Best Suited Access | Open, general access | Recessed, flush-mount applications | One-sided access, tamper resistance needed | Where a separate washer would be inconvenient |
| Torque / Load Capacity | High — wide wrench engagement | Moderate-High, compact head | Low-Moderate | High, wide bearing surface reduces surface damage |
| Typical Use | General structural & machinery assembly | Precision assemblies, machine covers | Wood/metal joints, decks, furniture, guardrails | Automotive, machinery, vibration-prone joints |
| Relative Cost | Lowest | Moderate | Low-Moderate | Moderate |
Bolt Product Range
Hex Bolts
The general-purpose default — full metric & imperial range
Allen Bolts
Flush-mount and recessed assembly applications
Eye Bolts
Lifting, rigging, and tie-down applications
U-Bolts
Pipe clamping and mounting applications
J-Bolts
Anchoring and foundation applications
Flange Stud Bolts
Integrated washer-face for vibration-prone joints
Carriage Bolts
Smooth, tamper-resistant exterior fastening
Shoulder Bolts
Precision pivot and linkage applications
T-Head Bolts
T-slot table and fixture mounting applications
Foundation Bolts
Structural foundations and civil construction
Structural Bolts
High-strength steel construction bolting
High-Tensile Bolts
Grade 8.8, 10.9, 12.9 for high-load applications
Bolt Technical Specifications
Available Materials
- Carbon Steel Grade 4.6 – 4.8
- Stainless Steel 304 / 316 / 316L
- Alloy Steel A193 B7 / B7M
- Duplex / Super Duplex S32205 / S32750
- Exotic Alloys Inconel / Monel / Hastelloy
ISO Strength Grades (Steel)
- Grade 4.6 Tensile 400 MPa
- Grade 8.8 Tensile 800 MPa
- Grade 10.9 Tensile 1040 MPa
- Grade 12.9 Tensile 1220 MPa
- Testing MTC / NABL on request
Available Dimensions
- Metric Diameter M6 – M160
- Imperial Diameter 1/4″ – 6″
- Length Up to 500mm standard
- Finish Zinc / HDG / Passivated
- Thread Type Metric / UNC / UNF
Application Areas
From general assembly to the most demanding structural and process environments.
Structural Steel Construction
bolting per ASTM A325/A490
Automotive & Machinery
precision component fastening
Oil & Gas Equipment
equipment fastening
Marine Hardware
fastening for marine exposure
Power & Infrastructure
towers, bridges, and rail
General Industrial Equipment
across every material grade
Furniture & Fixtures
for decks, benches, guardrails
Foundation & Anchoring
foundation bolt fastening
Standard Export Documentation
Prepared as standard practice for every bolt shipment, regardless of type or material.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification.
Certificate of Conformance
Confirms the shipment matches the purchase order specification in full.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown.
NABL Accredited Test Reports
Independent mechanical and chemical testing available on request.
Bill of Lading
Ocean or air freight shipping document confirming carrier, mode, and consignee details.
Internationally Recognised Standards Coverage
Related Products & Materials
Stud Bolts
Fully threaded, tap-end, and double-end studs for flange assemblies.
View Stud Bolts →Nuts
Hex, lock, flange, and specialty nuts to match every bolt type we manufacture.
View Nuts →Washers
Plain, spring, and lock washers across our full material range.
View Washers →Stainless Steel 316 Fasteners
Our most requested corrosion-resistant material for general bolting.
View SS 316 →Sourcing Bolts
for Your Project?
Head type · size · material · quantity. Akbar Fasteners Pvt. Ltd. responds within 24 hours with pricing and mill test documentation.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · export@akbarfasteners.in