J type, L type and headed anchor bolts for embedding in concrete. As a specialist Foundation Bolt Manufacturer Chennai, we produce heavy duty foundation bolts from M10 to M100+ for machinery bases, structural columns and industrial foundations.
TypesL-Type · J-Type · Headed · Custom
Size RangeM10 to M100+ (custom available)
StandardsIS 5624 · DIN 529 · ASTM F1554
Lengths150mm to 3000mm custom
FinishPlain · Zinc · HDG
Product Overview
Precision Anchor Bolts for Concrete Foundations
Every heavy machine, steel column and process vessel transfers its load into concrete through anchor bolts. As an experienced Foundation Bolt Manufacturer Chennai, Mishkat Pipe Fittings Co. fabricates L-type, J-type, headed and custom foundation bolts from approved mild steel and high-tensile bar stock, with threading, bending and heat treatment performed in-house.
Poorly made anchors pull out of concrete under load and force expensive foundation repairs. Choosing a proven Foundation Bolt Manufacturer Chennai gives you correct embedment geometry, accurate projection lengths and clean threads that accept nuts easily on site after the pour.
Foundation bolts are manufactured to IS 5624 (Indian Standard), DIN 529 (German Standard) and ASTM F1554 (US Standard) as specified. Custom configurations — including plate-headed anchors, sleeve anchors and multi-piece assemblies — are manufactured to your structural drawings. Complete sets with hex nut and flat washer are available, with hot-dip galvanized finish for outdoor and coastal applications.
✓ IS 5624 / DIN 529 / ASTM F1554✓ M10 to M100+ Custom✓ HDG Available
Supply & Stock
Reliable Anchor Bolt Supplier Chennai
Concrete pours run to a fixed schedule and anchor bolts must be on site before the shutter closes. As a dependable Anchor Bolt Supplier Chennai, we hold bar stock in common diameters and fabricate to your template drawing quickly, so foundation work is never held up waiting on bolts.
Working with a local Anchor Bolt Supplier Chennai also means template checking and last-minute length changes are handled by phone rather than by long email chains with distant suppliers.
Complete Assemblies: Bolt, hex nut and flat washer supplied as matched sets ready to install.
Template Fabrication: Anchor bolt templates and setting plates made alongside the bolts.
Bulk Project Supply: Scheduled releases for multi-phase construction programmes.
Test Documentation: Mill Test Certificates supplied on request for every batch.
J Type
J Type Foundation Bolts Chennai
The hooked tail of a J bolt curls back on itself to grip the concrete mass, giving high pullout resistance without needing a bearing plate. Our J Type Foundation Bolts Chennai are cold bent to a controlled radius so the hook keeps its full section and does not crack at the bend.
Engineers specify J Type Foundation Bolts Chennai for pump bases, compressor skids, tank pads and light-to-medium machinery mounts where uplift is the governing load. Hook length, embedment depth and thread projection are all made to your drawing.
L Type
L Type Foundation Bolts Chennai
The L bolt is the workhorse of structural anchoring — a straight shank with a right-angle foot that locks into the concrete. Our L Type Foundation Bolts Chennai are produced to IS 5624 and ASTM F1554 with accurate leg dimensions so bolt groups line up with the base plate holes on first offer-up.
Specifiers choose L Type Foundation Bolts Chennai for steel column bases, pre-engineered building frames, crane rails and switchyard structures. Plain, zinc plated and hot-dip galvanized finishes are available to suit the exposure conditions.
Heavy Duty
Heavy Duty Foundation Bolts Chennai
Turbine decks, large presses, kiln supports and tall process towers impose anchor loads far beyond ordinary building fixings. Our Heavy Duty Foundation Bolts Chennai range covers large diameters up to M100 and beyond, in embedded lengths from 150 mm to 3000 mm, produced from high tensile bar and heat treated for consistent yield strength.
Because these anchors are cast permanently into the structure, Heavy Duty Foundation Bolts Chennai are inspected for straightness, thread quality and coating integrity before dispatch — replacing a failed anchor after commissioning is a major and costly operation.
Plate-Headed Anchors: Welded bearing plates for maximum pullout capacity in high-load foundations.
Sleeve and Pocket Types: Adjustable anchors for equipment needing final alignment after grouting.
Multi-Piece Assemblies: Coupled anchor systems for very deep embedment in mass concrete.
Corrosion Protection: Hot-dip galvanizing for coastal, marine and chemically aggressive environments.
Types & Sizes
Foundation Bolt Types
L-Type
Classic L-shaped, most common for machinery bases and columns
J-Type
J-shaped hook end for greater pullout resistance
Headed Bolt
Plate or forged head welded for heavy structural anchors
Image coming soon
↑ Click a bolt type to view its specific dimensions and technical data below.
Specifications
Parameter
Details
Standards
IS 5624, ASTM F1554, DIN 529
Size Range
M10 to M100+ (½" to 4"+)
Length Range
150 mm to 3000 mm (custom available)
Materials
Mild Steel (Grade 4.6), High Tensile (Grade 8.8), SS 304/316
Finish
Plain, Zinc Plated, Hot-Dip Galvanized (HDG)
Supplied With
Hex nut + flat washer sets (on request)
Dimensions
Standard L-Type Dimensions (IS 5624)
IS 5624
Classic 90° bent shank. The most widely used foundation bolt for machinery bases, structural columns and general steelwork anchoring.
Dimensions per IS 5624 (L-type). Custom lengths and oversizes manufactured to drawing. Standard range M10 to M100+, lengths 150mm to 3000mm (custom available beyond this on request).
Compliance
Standards & Specifications
IS 5624
Foundation Bolts (India)
Indian standard for L-type, J-type and headed foundation bolts in mild and high tensile steel.
ASTM F1554
Anchor Bolts (USA)
US standard for anchor bolts in Grade 36, 55 and 105 for structural steel and equipment anchoring.
DIN 529
Foundation Bolts (Germany)
DIN standard anchor bolts — used for European and international project specifications.
IS 432
Mild Steel (Grade 1/2)
Mild steel bars for general foundation bolt fabrication in low-load applications.
IS 1786
High Tensile Bars
HT deformed bars (Fe415, Fe500) used for high-strength foundation bolt production.
EN 10204 3.1
Material Certificate
MTC issued with every order — chemical analysis and mechanical test results included.
What does a Foundation Bolt Manufacturer Chennai supply?
A Foundation Bolt Manufacturer Chennai fabricates the anchor bolts that fix machinery and steel columns into concrete. We supply J type, L type, headed and custom anchors with matching nuts, washers and setting templates. Local manufacturing means shorter lead times and easier drawing coordination for Chennai and Tamil Nadu projects.
What is the difference between J type and L type foundation bolts?
A J type bolt has a curved hook that grips the concrete for high pullout resistance, commonly used on pump and compressor bases. An L type bolt has a right-angle foot and is the standard choice for steel column bases and pre-engineered building frames. Both are made to IS 5624 and ASTM F1554.
What makes a foundation bolt heavy duty?
Heavy duty foundation bolts use high tensile bar stock, larger diameters up to M100 and beyond, deeper embedment lengths, and often a welded bearing plate for maximum pullout capacity. They are heat treated for consistent yield strength and used under turbines, presses, kilns and tall process towers.
What is the maximum size foundation bolt you manufacture?
Standard range M10 to M100+, manufactured to drawing for custom or oversize requirements.
What is the maximum custom length available?
150mm to 3000mm standard, with custom lengths available beyond this on request.
Do you supply foundation bolt sets (bolt + nut + washer)?
Yes — hex nut and flat washer sets are supplied on request, and a sleeve can be included where needed.
Can you manufacture to engineer's drawings?
Yes. Mishkat manufactures non-standard foundation bolts to customer structural engineering drawings. Custom bend radii, plate-head configurations, and special thread lengths are all available. Email your drawing to sales@mishkatfittings.com.
What is the delivery time for standard L-type foundation bolts?
Standard delivery time is 7–10 days.
Do you supply hot-dip galvanized foundation bolts?
Yes. Hot-dip galvanized (HDG) is offered as a standard finish, alongside plain and zinc-plated options. Galvanising is subcontracted, which adds slightly to lead time.
What test certificates are provided?
Standard supply includes a Mill Test Certificate (MTC) per EN 10204 Type 2.2 with chemical analysis and hardness test. Type 3.1 (QC inspector certified) available on request.
Do you supply for industrial and infrastructure projects?
Yes. Mishkat supplies foundation bolts for equipment bases, structural steel columns, compressor pads, turbine foundations and civil infrastructure projects, including work for L&T, IOCL, ONGC and PEB manufacturers.
Custom Foundation Bolts
Non-standard lengths, special grades or high-volume orders — we manufacture to your structural engineering requirements.
