Rajal Industries

Rajal Industries Rajal Industries – Manufacturer of Industrial Fasteners & CNC Components
Precision-made bolts, nuts, washers, studs & custom parts.

Supplying India & global buyers with consistent quality since 1995. At Rajal Industries, we're your trusted source for high-quality industrial fasteners. We specialize in the production of a wide range of industrial products, including threaded and non-threaded fasteners, metal machine auto parts, automotive components, turned and machined engineering components, and customized parts tailored to y

our specific needs. Established in 2016, we've quickly risen as a leading name in the industry. Our commitment to customer satisfaction is unwavering, backed by our dedication to top-tier products and exceptional service. Our expert team stays ahead of market trends and technology, ensuring we deliver the best to our customers. We take pride in providing fasteners that meet the highest standards of quality and performance. For all your fastener needs, whether standard or customized, contact us today. Let's build a stronger future together!

⚠️ Same Outdoor Panel. Different Fasteners. Completely Different Results.After 3 years in outdoor service:❌ SS304 fasten...
16/06/2026

⚠️ Same Outdoor Panel. Different Fasteners. Completely Different Results.

After 3 years in outdoor service:

❌ SS304 fasteners showed corrosion, rust stains, and difficult maintenance.

✅ SS316 fasteners remained clean and reliable.

Why?

SS316 contains molybdenum, providing superior resistance against:

✔ Salt exposure

✔ Humidity

✔ Coastal environments

✔ Industrial pollution

For outdoor electrical panels, EV chargers, solar installations, and battery systems, choosing the right stainless steel grade can significantly reduce maintenance costs and extend service life.

Don't choose fasteners based only on price.

Choose them based on environment and lifecycle performance.

⚠️ M5 Screw Threads Keep Stripping in Electrical Enclosures?The screw may not be the problem.The thread is.Common causes...
16/06/2026

⚠️ M5 Screw Threads Keep Stripping in Electrical Enclosures?

The screw may not be the problem.

The thread is.

Common causes include:

🔹 Over-tightening

🔹 Thin sheet metal

🔹 Poor thread engagement

🔹 Repeated maintenance

🔹 Cross-threading during assembly

Many OEMs are now switching to:

✔ Rivet Nuts

✔ Captive Screws

✔ Cage Nuts

✔ Threaded Inserts

Why?

Because stronger thread engagement means:

✅ Less rework

✅ Better reliability

✅ Longer service life

✅ Improved customer satisfaction

Small fastening decisions can have a big impact on product quality.

⚙️ Can four fasteners improve assembly efficiency by 18%?One electrical panel manufacturer discovered they were managing...
15/06/2026

⚙️ Can four fasteners improve assembly efficiency by 18%?

One electrical panel manufacturer discovered they were managing more than 90 different fastener SKUs.

The result?

❌ Longer assembly times

❌ More inventory

❌ More operator mistakes

❌ More purchasing complexity

After standardizing around a few key fasteners:

✅ Assembly time reduced by 18%

✅ Inventory reduced significantly

✅ Training became easier

✅ Production became faster

# # # Common Standardized Fasteners

✔ M4 Machine Screws

✔ M5 Machine Screws

✔ M6 Cage Nuts

✔ Captive Screws

Sometimes the biggest productivity gains don't come from expensive automation.

They come from simplifying the basics.

At one outdoor BESS site, anchor bolt failure did not start at the threads.It started under the washer.During inspection...
15/06/2026

At one outdoor BESS site, anchor bolt failure did not start at the threads.
It started under the washer.

During inspection, 35% of M12 anchor bolts showed corrosion below the washer surface. Torque dropped below 45 Nm, and containers shifted 4–6 mm during wind loading.

The root cause was simple: zinc plated fasteners used in outdoor conditions.

Zinc coating (8–12 microns) is not designed for long-term exposure. Moisture enters under the washer, corrosion expands, and preload reduces.

Technically, an M12 Grade 8.8 bolt carries about 53.9 kN load.
If corrosion reduces diameter by even 10%, load capacity drops significantly.

This leads to:
• Clamp force loss
• Micro movement
• Base plate wear
• Long-term structural instability

Correct solution:
• M12 HDG Grade 8.8 anchor bolt
• Structural washer (load distribution)
• Proper torque control (65–75 Nm)
• Correct embedment depth

Engineering check:
Open one connection. Inspect below washer.
If corrosion exists, your system is already losing stability.

🔧 Why are leading panel manufacturers replacing standard screws with captive screws?Because lost hardware creates real m...
12/06/2026

🔧 Why are leading panel manufacturers replacing standard screws with captive screws?

Because lost hardware creates real maintenance problems.

A control panel OEM was dealing with:

⚠ Missing screws

⚠ Loose access panels

⚠ Longer service visits

⚠ Reassembly errors

The solution?

✅ Captive Screw Assemblies

Benefits include:

✔ Screw stays attached to panel

✔ Faster servicing

✔ Better safety

✔ Reduced maintenance issues

✔ Improved customer experience

Used widely in:

• Electrical Panels

• Telecom Cabinets

• EV Chargers

• Battery Cabinets

• Industrial Enclosures

Small hardware changes can create major reliability improvements.

💡 One simple fastener change helped an OEM reduce assembly costs by nearly 18%.The company was using M6 Weld Nuts throug...
12/06/2026

💡 One simple fastener change helped an OEM reduce assembly costs by nearly 18%.

The company was using M6 Weld Nuts throughout production.

After evaluating Rivet Nuts in selected locations, they achieved:

✅ Faster assembly

✅ Lower rework

✅ Reduced manufacturing cost

✅ Improved serviceability

# # # Rivet Nut Benefits

🔹 No welding required

🔹 Great for thin sheet metal

🔹 Easy installation

🔹 Easy replacement

# # # Weld Nut Benefits

🔹 Strong permanent thread

🔹 High-volume production friendly

🔹 Excellent automation compatibility

The lesson?

Choosing the right fastening system can have a bigger impact on profitability than many manufacturers realize.

⚠️ Hidden corrosion can exist even when a busbar connection looks perfectly normal.One outdoor electrical panel showed:✔...
10/06/2026

⚠️ Hidden corrosion can exist even when a busbar connection looks perfectly normal.

One outdoor electrical panel showed:

✔ No visible damage

✔ No alarms

✔ No shutdowns

Yet thermal inspection found a busbar joint running **28°C hotter** than surrounding connections.

The real problem?

👉 Corrosion hidden beneath the washer.

# # # Common Causes

🔹 Moisture ingress

🔹 Condensation

🔹 Damaged coatings

🔹 Galvanic corrosion

🔹 Wrong fastener materials

# # # Why It Matters

Corrosion increases electrical resistance.

Higher resistance = more heat.

More heat = higher risk of equipment failure.

# # # Recommended for Outdoor Applications

✅ SS304 Fasteners

✅ SS316 Fasteners

✅ Stainless Steel Washers

✅ Proper sealing and inspection

Small corrosion problems can become major reliability issues if left undetected.

⚠️ M6 weld nuts cracking during assembly?The root cause may not be torque.It may be welding quality. # # # Common Causes...
09/06/2026

⚠️ M6 weld nuts cracking during assembly?

The root cause may not be torque.

It may be welding quality.

# # # Common Causes

✔ Poor weld pe*******on

✔ Excessive welding heat

✔ Thin sheet metal

✔ Assembly misalignment

✔ Low-quality weld nuts

# # # Why It Matters

A weak weld may look acceptable during inspection but fail when preload is applied during assembly.

# # # OEM Best Practice

✅ Verify weld pe*******on

✅ Control welding current

✅ Inspect sheet thickness

✅ Perform torque testing

✅ Conduct pull-out testing

For high-volume panel manufacturing, weld quality is just as important as fastener quality.

⚠️ Control panel vibration failures often start with a simple fastener mistake.Common signs include:🔹 Loose terminal cov...
09/06/2026

⚠️ Control panel vibration failures often start with a simple fastener mistake.

Common signs include:

🔹 Loose terminal covers

🔹 Rattling panel doors

🔹 Missing screws

🔹 Component movement

🔹 Electrical faults

# # # Top 5 Causes

✔ No thread locking

✔ Incorrect torque

✔ Ignoring vibration sources

✔ Using plain washers only

✔ Poor fastener standardization

Even small M4 and M5 screws can create major reliability issues when preload is lost.

The solution?

✅ Proper torque control

✅ Locking washers

✅ Captive screws

✅ Standardized fastener systems

Small fastening improvements can dramatically reduce maintenance and warranty complaints.

Why do electrical panel doors start rattling after a year?The answer is usually not the door.It's the fasteners.Over tim...
08/06/2026

Why do electrical panel doors start rattling after a year?

The answer is usually not the door.

It's the fasteners.

Over time:

🔹 Vibration reduces preload

🔹 Hinges loosen

🔹 Door hardware shifts

🔹 Small movements create noise

Common causes include:

✔ Loose M5 hinge screws

✔ Missing locking washers

✔ Thermal expansion

✔ Repeated opening cycles

✔ Incorrect fastener selection

Many OEMs now use captive screws and serrated washers to improve long-term reliability.

A small fastener can have a big impact on enclosure performance.

Address

R. S. No. 2912/P, B/h. Meldi Maa Temple, Old Dedadra, Road, Wadhavan
Wadhwan City
363030

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm

Telephone

+918460362030

Website

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