J. C. Gupta & Sons

Bolted connections tend to work themselves loose under certain operating conditions. Vibrations cause particular problems as they can overpower the “self-locking effect” of bolted connections. This can lead to functional failure or even to the connection coming apart. As it’s not always possible to know what forces are acting on the structure, and as constructional measures cannot be implemented everywhere, securing elements are often used.
One of the few effective securing technologies available is the HEICO-LOCK® wedge locking system, the effectiveness of which has been demonstrated by the latest experimental standards (including DIN 65151, DIN 25201-4, NASM 1312-7).
FUNCTIONAL PRINCIPLE
An important feature of HEICO-LOCK® wedge lock washers, setting them apart from other systems that are available, is the securing of the bolt fastening using preload force rather than friction
Wedge-shaped cams on the inside of the lock washers, radial teeth on the outside
Interlocking embedding of the radial teeth with the respective mating surface   (when tightening the bolted joint)
System movement only possible between the inner wedge shaped cams.   Movement across these wedge shaped surfaces effectively self locks the bolt.
Increase in clamping force.

Certified system for securing bolts, working at low and high preload levels.
Particularly suitable for dynamic loads – including when using lubricants.
Can be re-used.
Very easy to install and remove (wedge lock washers are supplied   as a pre-assembled pair)
Also suitable for high-tensile bolts of 8.8, 10.9 and 12.9 and their respective nuts.
Available in steel or stainless steel with narrow or wide bearing surfaces – other materials are available upon request.
Available from M3 – M76 and ¼” – 3” - custom sizes upon request.

• Steel with Zinc Flake Coating M3 to M76

Additional Information:

• Item Code: G6D26
• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: BENGALURU

 

Dowel pins or Spring dowel pins can be used to assemble parts without screws. Spring dowel pins do not require threads. . Spring dowel pins are shock absorbing and also vibration resistant when compared to normal dowel pins.

Spring pins can be used for many jobs, including electrical connectors in circuits, terminals, actuators, wire harness fixtures, studs, hinges, fixing pulleys or gears to shafts, and more. They permit a wider tolerance than drive pins, taper pins, or collar pins because of their greater flexibility.

to retain part in a fixed position or to preserve alignment.

 

Made from AISI 301 grade of stainless steel as per DIN 1481 our range starts from 1mm.

 

Additional Information:

• Item Code: B9E03
• Delivery Time: EX STOCK

A split pin, also known in the United States as a cotter pin or cotter key, is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. Typically made of thick wire with a half-circular cross section, split pins come in multiple sizes and types.
Metric DIN 94 Split Pins (Cotter Pins) are common used fasteners that hold assemblies together. Made of soft metal wire looped on itself so the two resulting tines can be inserted into a pre-drilled hole and bent to keep it in place. Cotter pins are typically made of soft metal allowing for easy installation and removal.  However, this also makes them poor locking devices when strong shear forces are expected.
Material: AISI 304
Standard: DIN 94, ISO 1234

Additional Information:

• Item Code: B4E11

A spring pin is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the hole diameter, and a chamfer on either one or both ends to facilitate starting the pin into the hole. The spring action of the pin allows it to compress as it assumes the diameter of the hole. The force exerted by the pin against the hole wall retains it in the hole, therefore a spring pin is considered a self retaining fastener.

A coiled spring pin, also known as a spiral pin, is a self retaining engineered fastener manufactured by roll forming metal strip into a spiral cross section of 2 1/4 coils. Coiled spring pins have a body diameter larger than the recommended hole diameter and chamfers on both ends to facilitate starting the pin into the hole, the spring action of the pin allows it to compress as it assumes the diameter of the hole.

When spiral dowels are installed, the compression starts at the outer edge and moves through the coils toward the center. Coiled pins continue to flex after insertion when a load is applied to the pin thus providing excellent performance to counter fatigue in dynamic applications.
These are used extensively in cosmetic cases, automotive door handles and locks, and latches as hinge pins. They are also used as pivots and axles, for alignment and stopping, to fasten multiple components together—such as a gear and shaft—and even as ejector pins to remove motherboards from PCs. The automotive and electrical industries use coiled pins in such products as steering boxes and columns, pumps, electric motors and circuit breakers.
Available in Stainless Steel AISI 301 Grade

Additional Information:

• Item Code: B9E07

Dowel pins are also referred to as parallel pins and are commonly used to retain parts in a fixed position or to preserve alignment.
Metric DIN 7 parallel dowel pins are solid cylindrical rods made of a variety of materials that are used to strongly and accurately join two or more objects together. Parallel dowel pins are able to join parts together by frictional forces between the pin and material into which it is inserted. In order to keep the assembled parts aligned, the dowel pin must be rigid and fit tightly into the pre-drilled holes of the mating parts

Additional Information:

• Item Code: P4E01

Contact Washers are Conical Shaped Lock Washers, formed with a ribbed top surface. The conical shape exerts locking force 360 Degree around the underside of the screw head or nut by generating Tension. The ribbed top surface further enhances the locking force and resists the torqued fastener connection potential for loosening under pressure and vibration. This is a single-sided toothed and non-slip locking washer, providing the designer the ability to secure wobble-prone screw effectively. It is particularly suitable for use on slot fasteners, dynamic cross-loaded to the screw connections and applications that require high biasing forces.

These washers are widely used in locomotives, appliances, elevators, electrical towers, medical machinery and electronic equipment.

Range available

Sizes - M3 to M20

Materials SS-304 A2 and SS-316 A4

As per NFE - 25511

Additional Information:

• Item Code: B4D44
• Pay Mode Terms: T/T (Bank Transfer)

The Safety Washers are of trapezoidal cross section and serrated on both sides. The security is achieved through friction and mechanical locking.
Advantages
- The cross section ensures locking effect at the outside diameter.
- Due to the closed ring form, high degree of pretensioning is achieved.
- Sliding surfaces allow tigtening with damaging the mating surfaces.
- High resistance to vibration due to positive locking of the serrations
- Suitable for a wide range of screw/bolt heads minimizing stocks.

Additional Information:

• Item Code: B4D47

We have gained specialization in offering a comprehensive range of E type circlips. Made with precision, these fasteners are highly appreciated for their excellent quality. Circlips are fasteners, comprising semi-flexible metal ring with open ends. We can lock these Circlips into place, machine groove on a dowel pin or other parts. These permit rotation to many machines and prevent lateral movement as well.

Additional Information:

• Item Code: D23

These are locking washers that form part of the serrated or toothed type of washers. They feature serrations or teeth that extend radially inward or outward to bite into the bearing surface.
Their effectiveness is more evident on soft substrates such as plastics or Aluminium although they do resist rotation better than plain washers on harder surfaces.
The external tooth washer has tabs around the outer diameter of the washer and dimensions confirm to DIN 6798A.
Materials
- Spring Steel
- Stainless Steel AISI 304
- Stainless Steel AISI 316. Available on request.

 

Additional Information:

• Item Code: D11

The lock washer prevents nuts and bolts from turning, slipping and coming loose because of vibration and torque.
Spring Lock Washers are of many types. The most common one being the helical split washer. A ring split at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate, which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread, creating more friction and resistance to rotation.
Spring washers are a left hand helix and allow the thread to be tightened in a right hand direction only, i.e. a clockwise direction. When a left hand turning motion is applied, the raised edge bites into the underside of the bolt or nut and the part that it is bolted to, thus resisting turning.
Materials: Spring Steel, Stainless Steel AISI 301 and AISI 316
Standards: IS 3063, DIN 127B
Size Range: M2 to M48

Additional Information:

• Item Code: B4D06

With the valuable assistance of creative team of our professionals, we Spring Washers Type A. The offered spring washer is manufactured in sync with industrial norms using quality approved material & latest technology. This spring washer is inspected on several parameters in order to supply a faultless range. Offered spring washer can be availed in bulk quantity by our valuable customers at market leading price.

Features:

• Exclusive design
• Corrosion resistance
• Long lasting

Additional Information:

• Item Code: B4D05

_{External Snap Rings are also called “external retaining rings”. These sit in the grooves on the exterior of shafts of any size. The areas of the ring that protrude out from the shaft hold it in place.}

^{Mainly used for the assembly of needle bearings, needle cages and sealing rings.
Standard material: Carbon Spring Steel
Standard Finish: Phosphate and Oil.} 

Additional Information:

• Item Code: B9D52
• Delivery Time: 7 Days
• Packaging Details: As per your requirement

Snap Ringa are also known as Retaining rings. These rings are usually used to fasten parts such as bearings to prevent them from coming off.

They are attached using special tools such as snap ring pliers. 
Rings attached in the direction of thrust include shaft rings that fasten outside the part being secured, and hole rings that fasten inside the part being secured.

Turnbuckle is a coupling with internal screw threads used to connect two rods, lengths of boat's rigging, etc. lengthwise or to regulate their length or tension.

These are available in Eye-Eye, Eye-Hook and Hook-Hook configurations. Being constructed from SS-316 Grade A4, these are suitable for marine applications.

Turnbuckles are very useful in stretching cables.

Additional Information:

• Item Code: B6D09

Dowel pins are also referred to as parallel pins and are commonly used to retain parts in a fixed position or to preserve alignment.
Metric DIN 7 parallel dowel pins are solid cylindrical rods made of a variety of materials that are used to strongly and accurately join two or more objects together. Parallel dowel pins are able to join parts together by frictional forces between the pin and material into which it is inserted. In order to keep the assembled parts aligned, the dowel pin must be rigid and fit tightly into the pre-drilled holes of the mating parts

Material Stainless Steel AISI 303
Standard : DIN 7

Additional Information:

• Item Code: B3E01

Grooved pins are solid pins with three swaged grooves at 120° pitch along all or part of their length.  When the pin is driven into a drilled hole of suitable diameter, the material displaced by the grooving process is forced back, to partially close up the grooves and lock the pin into place.
Advantages of grooved pins:
They do not need a precision reamed hole.
They can have parallel grooves or tapered grooves.   
Parallel grooves give the pin high resistance to  vibration, but need more force to insert.
They can be grooved on only part of the length, so that   where the pin has to be firmly fixed in one part of an    assembly, but be a clearance fit on the other, both    parts can be drilled to the same diameter.
Round head  pins are widely used for fastening light metal or plastic parts to heavier members. They replace screws, rivets, peened pins and other types of fasteners in applications such as attaching name plates, covers, brackets, spring etc. The standard stud has a round head, Three parallel grooves impressed on the shank of the stud provide the same positive, vibration and shock-free holding.
Material : Stainless Steel A2

Additional Information:

• Item Code: B4D27

Bolted connections tend to work themselves loose under certain operating conditions. Vibrations cause particular problems as they can overpower the “self-locking effect” of bolted connections. This can lead to functional failure or even to the connection coming apart. As it’s not always possible to know what forces are acting on the structure, and as constructional measures cannot be implemented everywhere, securing elements are often used.
One of the few effective securing technologies available is the HEICO-LOCK® wedge locking system, the effectiveness of which has been demonstrated by the latest experimental standards (including DIN 65151, DIN 25201-4, NASM 1312-7).
FUNCTIONAL PRINCIPLE
An important feature of HEICO-LOCK® wedge lock washers, setting them apart from other systems that are available, is the securing of the bolt fastening using preload force rather than friction
Wedge-shaped cams on the inside of the lock washers, radial teeth on the outside
Interlocking embedding of the radial teeth with the respective mating surface   (when tightening the bolted joint)
System movement only possible between the inner wedge shaped cams.   Movement across these wedge shaped surfaces effectively self locks the bolt.
Increase in clamping force.

Certified system for securing bolts, working at low and high preload levels.
Particularly suitable for dynamic loads – including when using lubricants.
Can be re-used.
Very easy to install and remove (wedge lock washers are supplied   as a pre-assembled pair)
Also suitable for high-tensile bolts of 8.8, 10.9 and 12.9 and their respective nuts.
Available in steel or stainless steel with narrow or wide bearing surfaces – other materials are available upon request.
Available from M3 – M76 and ¼” – 3” - custom sizes upon request.

• Steel with Zinc Flake Coating M3 to M76

The HLB Series has a larger OD to compensate for slotted holes and softer materials.

Our organization is a prominent name, engaged in offering an extensive range of B type internal circlips. These internal circlips are manufactured using high-grade spring steel. We offer these products in a huge variety of sizes, dimension and thicknesses to meet specific needs of our clients. Our complete range is strictly tested on the basis of different parameters. These products are suitable for most normal engineering applications as these simply act as a rigid shoulder within a bore.

Additional Information:

• Item Code: G2D22

Circlips are used to prevent lateral movement. They are used as retaining rings on bearing assemblies and are manufactured using semi-flexible metal ring. These products are in a shape of a circle with a clip and are open from one end.

The most common form of axially fitted circlips for shafts with grooves.

 

Constructed as curved beams of uniform strength, the radial width is reduced towards the free ends so that a constantly round shape is maintained throughout continuous use. This form of circlip often used in assemblies subjected to strong centrifugal forces, is also secure against high rotational speeds. Lugs with holes are provided for rapid fitting or removal with circlip pliers.

 

Standard material: Carbon Spring Steel - Standard Finish: Phosphate and Oil.

  

Additional Information:

• Item Code: G2D21
• Delivery Time: Ex Stock

Taper Pins are a simple type of cylinderical pins. Threaded Taper Pins give a reuseable fit and are used when components need to be disassembled and reassembled. They are availbile in a range of sizes. 
We have threaded taper pins available in Stainless Steel.

Features:

• Highly durable
• Dimensional accuracy
• Easy to use

Additional Information:

• Item Code: P4E02

Taper Pins are a simple type of cylinderical pins. They are used for semi permanent joins and are availbile in a range of sizes.

Taper pins have one end of slightly larger diameter than the other. These pins are stringently checked to ensure their immaculate finish and dimensional accuracy.

We have taper pins available in Stainless Steel.

Additional Information:

• Item Code: E02

HEICO-LOCK® COMBI-WASHERS

HEICO-LOCK® combi-washers enable quick and easy assembly, especially in difficult installation situations. Combine the simple to use HEICO-LOCK® combi-washers with all commercially available bolts provided by your suppliers, quickly and easily.

• Easy mounting and permanent connection thanks to the inset tabs
• Can be combined with all commercially available bolts
• Also available in small purchase quantities
• Flexible use for various different types of bolts
• Permanent securing and correct positioning of HEICO-LOCK® wedge lock washers
• Can be re-used several times
• Cost savings through increased productivity
• Available in steel or stainless steel with narrower and wider contact areas
• Available from M8 to M16

The above available with standard diameters – HKS and larger outer diameter HKB for soft surfaces and slotted holes.

Additional Information:

• Item Code: G6D261

We stock high-quality hose clamps such as worm drive clamps, wire clamp and u-clamps. A hose clamp is a device that is widely used for attaching & sealing a hose onto a fitting like a barb or nib. These clamps find their wide application in various industries due to their excellent sealing and mechanical properties.

Additional Information:

• Item Code: B4D24

Our organization has strongly settled its business in the domain owing to the offered elevated quality array of Wire Clamp. Our given wire clamp is manufactured from the superior quality material & leading techniques under the guidance of our professionals. Offered wire clamp is acclaimed in various industrial applications due to its perfect finish. This wire clamp is provided in numerous specifications as per the needs of customers.

Features:

• Longer service life
• High strength
• Precisely designed

Specifications:

• 10 mm I. D to 150 mm I.D

Additional Information:

• Item Code: A3D25

Quick Links are used to secure, connect or join chains and other items in various applications including marine.
Quick Links are designed to make permanent and temporary connections. Quickly attach chain and chain accessories. Quick Links should be used with chain or other items with equal or lower working load limits. Tools are not required for attachments, simply tighten shut.
They are made of Marine Grade Stainless Steel SS-316 A4 which is salt water resistant.

Additional Information:

• Item Code: B6G12-SS316