🔩 Types of Circlips | Neo Fasteners

Circlips, also known as retaining rings or snap rings, are semi-flexible metal fasteners used to secure components onto a shaft or inside a bore. They come in various types based on installation method, placement, and application.

Below is a comprehensive list of Circlip Types we supply in SS, MS, HT Steel, and Brass:

🔧 1. External Circlip (A-Type)

• Also Known As: Shaft Circlip
  
  

• Function: Fits into a machined groove on the outside of a shaft to retain a component axially.
  
  

• Standard: DIN 471, IS 3075 (Part 1)
  
  

• Common Size Range: 3 mm – 300 mm shaft diameter
  
  

• Materials: SS 304, MS, HT, Brass
  
  

🔩 2. Internal Circlip (B-Type)

• Also Known As: Bore Circlip
  
  

• Function: Fits into a groove inside a bore to retain components inward.
  
  

• Standard: DIN 472, IS 3075 (Part 2)
  
  

• Common Size Range: 8 mm – 250 mm bore diameter
  
  

🧷 3. E-Type Circlip

• Function: Clips onto a grooved shaft from the side (radial assembly), providing a shoulder on the shaft.
  
  

• Standard: DIN 6799
  
  

• Application: Ideal for tight spaces and mass assembly
  
  

• Size Range: 1.2 mm – 50 mm shaft
  
  

• Available Materials: SS, MS, HT
  
  

🌀 4. Snap Ring (Inverted / Spiral Type)

• Function: Circular ring that coils into a groove; offers 360° contact and high axial strength
  
  

• Variants: Internal & External Spiral Rings
  
  

• Used In: High-speed or high-vibration applications like motors and transmissions
  
  

⚙️ 5. Constant Section Retaining Ring

• Function: Uniform cross-section ring offering robust retention
  
  

• Used In: Heavy machinery, gear assemblies
  
  

• Material: High Carbon Spring Steel, SS
  
  

🧲 6. Bowed or Wave Circlip

• Function: Provides a preloaded spring effect; ideal where end-play compensation is needed
  
  

• Application: Bearing assemblies, electrical contacts
  
  

• Type: Waveform structure, applies consistent pressure
  
  

🛠️ 7. Self-Locking Circlip

• Function: Doesn’t require a groove; grips directly onto shaft
  
  

• Use: Temporary assemblies, low-load applications
  
  

🧩 8. Heavy-Duty Circlip

• Built For: High-load environments like cranes, gearboxes, heavy-duty pumps
  
  

• Thicker Profile: Withstands strong axial forces
  
  

📐 9. Custom or Special Circlips

• Manufactured as per client drawings, OEM specs, or specific engineering requirements
  
  

• Shapes: Rectangular, oval, waved, split-ring, etc.
  
  

• Materials: SS 316L, Copper Alloys, Phosphor Bronze also available on demand
  
  

✅ Neo Fasteners Circlip Features:

• Precision-machined for exact groove fit
  
  

• Surface Finishes: Black Oxide, Zinc Plated, Passivated, Phosphate Coated
  
  

• RoHS Compliant and ISO 9001:2015 Certified
  
  

🔩 Types of Standoffs | Neo Fasteners

Standoffs are threaded spacers used to maintain space between two components, commonly in PCB assemblies, electrical panels, automotive, and mechanical structures. They come in various shapes, threads, and material types to suit application needs.

At Neo Fasteners, we supply precision-engineered standoffs in Stainless Steel (SS), Mild Steel (MS), High Tensile Steel (HT), Brass, and Nylon, in all standard and custom sizes.

📌 1. Male-Female Standoff

• One end with external thread (male)
  
  

• Other end with internal thread (female)
  
  

• Application: Used to stack boards securely
  
  

• Common Materials: Brass, SS, Nylon
  
  

• Thread Options: Metric (M2 to M10), UNC/UNF
  
  

📌 2. Female-Female Standoff

• Both ends have internal threads
  
  

• Ideal For: Mounting PCBs with long screws
  
  

• Shape Options: Hex, Round
  
  

• Available In: SS 304/316, Brass, Nylon, MS
  
  

📌 3. Male-Male Standoff

• Both ends are externally threaded
  
  

• Used For: Joining components or extending threaded connections
  
  

• Materials: Brass, SS, MS, Aluminum
  
  

📌 4. Hex Standoff

• Hexagonal body for easy wrench-tightening
  
  

• Available in male-female, female-female, and male-male
  
  

• Materials: Brass (nickel/gold plated), SS, MS, Nylon
  
  

📌 5. Round Standoff

• Cylindrical shape, smooth aesthetic
  
  

• Used In: Decorative assemblies, electronics, enclosures
  
  

• Material: Brass, Nylon, SS, Aluminum
  
  

📌 6. ET (Through-Hole) Spacers / Unthreaded Standoffs

• Non-threaded standoff used purely as spacers
  
  

• Type: Plain bore, through-hole
  
  

• Use: For aligning PCBs or components where bolts pass through
  
  

• Materials: SS, Brass, Nylon
  
  

📌 7. Self-Clinching Standoff

• Pressed into sheet metal, becomes permanent
  
  

• Used In: Enclosures, control panels, electronics
  
  

• Types:
  
  

  • Flush-head self-clinching standoff
    
    

  • Blind self-clinching standoff
    
    

• Material: Hardened SS, Zinc-plated steel
  
  

📌 8. Blind Standoff

• Closed on one end, prevents airflow or moisture through the body
  
  

• Ideal for sealed enclosures
  
  

• Available in: SS, Brass, Nylon
  
  

📌 9. Adhesive/PCB Support Standoff (Nylon)

• No screws required, stick-on mounting
  
  

• Used In: Lightweight PCB mounting in consumer electronics
  
  

• Material: Flame-retardant Nylon 66
  
  

📌 10. Custom Standoffs

• Designed per customer drawings or specifications
  
  

• Variations in length, shape, threading, slotting, knurling, head types
  
  

• Finish Options: Nickel, Chrome, Zinc, Anodized, Passivated, Black Oxide
  
  

🧰 Available Thread Standards:

• Metric: M2, M2.5, M3, M4, M5, M6, M8, M10
  
  

• Imperial: UNC/UNF – 4-40, 6-32, 8-32, 10-32, etc.
  
  

🌐 Neo Fasteners Standards & Quality

• ISO 9001:2015 and IAF Certified
  
  

• RoHS Compliant – Free of hazardous substances
  
  

• Precision-manufactured to DIN, JIS, IS, or ANSI standards

🔩 Types of Dowel Pins | Neo Fasteners

Dowel Pins are solid cylindrical rods used to align or join two or more components precisely in mechanical, automotive, and structural assemblies. They serve as accurate locating devices and sometimes as load-bearing elements.

At Neo Fasteners, we manufacture and supply precision-engineered dowel pins in Stainless Steel, Mild Steel, High Tensile Steel, Brass, and Nylon — available in metric, imperial, standard, and custom sizes.

🔧 1. Solid Dowel Pin (Plain / Ground)

• Most common type, solid cylindrical pin with tight tolerance
  
  

• Precision-ground for tight fits
  
  

• Standards: IS 6689, DIN 6325, ISO 2338, ANSI B18.8.2
  
  

• Fit Types: Press fit (interference) or slip fit
  
  

• Materials: SS 304, SS 316, MS, HT, Brass
  
  

🧲 2. Tapered Dowel Pin

• One end has a gradual taper (typically 1:50)
  
  

• Used for accurate self-centering alignment
  
  

• Standard: DIN 1, BS 1804, ISO 8735
  
  

• Applications: Tooling, jigs, and dies
  
  

• Provides permanent locking alignment
  
  

🌀 3. Spiral Groove Dowel Pin

• Machined with a spiral groove along the body
  
  

• Allows trapped air to escape during insertion
  
  

• Prevents hydraulic lock
  
  

• Ideal for blind hole installation
  
  

• Material: SS, MS, Brass
  
  

⚙️ 4. Slotted Spring Dowel Pin (Roll Pin)

• Formed from a rolled steel strip with a longitudinal slot
  
  

• Compressible – allows easy press-fit installation
  
  

• Standard: DIN 1481, ISO 8752
  
  

• Material: Spring steel, SS, carbon steel
  
  

• Cost-effective for non-precision alignments
  
  

🌀 5. Spiral Coil Spring Pin

• Made from spirally wound steel strips
  
  

• Higher strength and fatigue resistance than slotted pins
  
  

• Withstands shear and dynamic loads
  
  

• Used in automotive, power tools, gears
  
  

• Standard: ISO 8750, ASME B18.8.3M
  
  

🔩 6. Grooved Dowel Pin

• Three or more grooves around the body
  
  

• Grooves displace material outward for a firm grip
  
  

• Common in wood, plastic, and soft metal joints
  
  

• Material: Brass, Nylon, MS
  
  

🚫 7. Internally Threaded Dowel Pin

• Threaded hole at one or both ends
  
  

• Allows easy removal using a screw
  
  

• Used in heavy equipment, mold assemblies
  
  

• Standard: DIN 7979
  
  

🔩 8. Extractable Dowel Pin (Tapped End)

• Threaded hole on one end for extraction
  
  

• Facilitates removal from blind holes
  
  

• Ideal for jigs, dies, tool & mold making
  
  

• Material: SS, HT, MS
  
  

🪵 9. Wooden Dowel Pin (for reference)

• Used in carpentry and furniture
  
  

• Smooth or fluted body for strong glue bonding
  
  

• (Not typically stocked in metal fastener categories but available on special request)
  
  

📐 Available Sizes:

• Metric: M1.5 to M20 diameter, 3 mm to 200 mm length
  
  

• Imperial: 1/16" to 3/4" diameter, custom lengths
  
  

• Custom tolerances and chamfering available
  
  

🔩 Types of POP Rivets (Blind Rivets) | Neo Fasteners

POP Rivets, also known as Blind Rivets, are permanent mechanical fasteners designed to join two or more materials where access is only available from one side. These are widely used in sheet metal fabrication, automotive, construction, appliances, and enclosures.

At Neo Fasteners, we offer an extensive range of POP rivets in Aluminum, Stainless Steel (SS), Mild Steel (MS), Copper, and Brass, available in various head styles, core materials, and grip ranges to suit every industry.

📌 1. Open End POP Rivet

• Most common type
  
  

• Expands inside the hole to form a strong joint
  
  

• Available in round (domed), flat (countersunk), or large flange heads
  
  

• Materials:
  
  

  • Body: Aluminum, SS, MS, Brass
    
    

  • Mandrel: Steel, SS, Aluminum
    
    

• Used In: Sheet metal, enclosures, panels, ducts
  
  

📌 2. Closed End POP Rivet (Sealed Type)

• Has a sealed end to prevent moisture, air, or gas leakage
  
  

• Ideal for watertight and airtight assemblies
  
  

• Used In: Automotive, HVAC, marine, electronics
  
  

• Materials: SS, Aluminum, Copper, Sealed-head design
  
  

📌 3. Multi-Grip POP Rivet

• Specially designed to accommodate varied material thicknesses
  
  

• One size covers multiple grip ranges
  
  

• Reduces inventory and simplifies selection
  
  

• Used In: Varying sheet combinations, field repairs, construction
  
  

📌 4. Peel Type POP Rivet

• Mandrel head splits into petals during installation
  
  

• Offers large blind-side bearing area
  
  

• Ideal for soft, thin, or brittle materials like plastic, rubber, wood
  
  

• Used In: Furniture, packaging, plastic housing
  
  

📌 5. Grooved POP Rivet

• Features longitudinal grooves along the rivet body
  
  

• Designed to expand and lock into softer materials
  
  

• Often used in concrete, wood, plastic (non-metal substrates)
  
  

📌 6. Tri-Fold (Exploding) POP Rivet

• Mandrel splits into three "legs" upon setting
  
  

• Provides excellent clamping on soft or thin materials
  
  

• Used In: Plastics, fiberglass, soft metals, thin panels
  
  

• Creates strong blind-side hold without pull-through
  
  

📌 7. Structural (Interlock) POP Rivet

• Mandrel locks inside the rivet body, giving higher shear and tensile strength
  
  

• Ideal for high-load and vibration-prone applications
  
  

• Used In: Automotive, truck bodies, trailers, railway coaches
  
  

📌 8. Colour Headed / Painted POP Rivet

• Color-coated head for matching panel or product surface
  
  

• Available in RAL shades or custom colors
  
  

• Used In: Architectural panels, signage, decorative finishes
  
  

📌 9. Load Spreading Rivet (Bulb-Tite / Load Tite)

• Creates a bulb-shaped tail during installation
  
  

• Spreads load evenly, reducing material stress
  
  

• Used In: Thin sheet metals, composites, plastic enclosures
  
  

📌 10. Hammer Drive Rivet

• Solid rivet driven by hammering the center pin
  
  

• Quick install without tools
  
  

• Used In: Nameplates, signage, license plates, light-duty attachments
  
  

🛠️ Head Styles Available:

• Dome Head – Standard, all-purpose head
  
  

• Large Flange Head – Distributes load over wider area
  
  

• Countersunk Head – Flush finish for smooth surfaces
  
  

📐 Available Sizes:

• Diameters: 2.4 mm (3/32”) to 6.4 mm (1/4”)
  
  

• Grip Range: 0.5 mm to 25 mm+
  
  

• Custom lengths and grip combinations available
  
  

🌟 Neo Fasteners POP Rivet Features:

• ISO 9001:2015 & IAF Certified
  
  

• RoHS Compliant – Free of hazardous substances
  
  

• High strength, corrosion resistance, and uniform clamping
  
  

• Available in bulk packs or custom blister kits
  
  

📦 Applications:

• Sheet Metal Fabrication
  
  

• HVAC & Ducting
  
  

• Electrical Enclosures
  
  

• Automotive Interiors & Panels
  
  

• Construction, Roofing, and Façade Work
  
  

• Furniture and Appliances
  
  

🔩 Types of Cotter Pins (Split Pins) | Neo Fasteners

Cotter Pins, also known as Split Pins, are simple, reliable fasteners used to lock nuts, bolts, clevis pins, or other hardware in place. They are inserted through a hole and bent to prevent loosening, making them essential in mechanical linkages and safety-critical assemblies.

At Neo Fasteners, we offer a wide range of Cotter Pins in different shapes, materials, and finishes, available in both metric and imperial sizes.

📌 1. Standard Split Cotter Pin (Double Leg)

• Most common type
  
  

• Two equal legs that are bent outward after insertion
  
  

• Standard: DIN 94, IS 549, BS 1574, ANSI/ASME B18.8.1
  
  

• Applications: Locking castle nuts, clevis pins, shafts
  
  

• Materials: SS 304, MS, Brass, Copper, Nylon
  
  

📌 2. Extended Prong Cotter Pin

• One leg is longer than the other
  
  

• Easier to bend during assembly
  
  

• Useful in high-speed or automated installations
  
  

• Available in SS, MS, Brass
  
  

📌 3. Hammerlock Cotter Pin

• Features a small head and pre-bent legs
  
  

• Requires just a tap with a hammer to secure
  
  

• Quick installation, especially in tight or repetitive settings
  
  

📌 4. Bow-Tie Cotter Pin (Hairpin Style)

• Shaped like a bow-tie or spring pin
  
  

• No need for bending — reusable and removable
  
  

• Ideal for temporary assemblies
  
  

• Used In: Towing equipment, farm machinery, light-duty linkages
  
  

• Materials: Spring steel, SS
  
  

📌 5. R-Clip / R-Pin / Hairpin Cotter Pin

• Resembles the letter "R"
  
  

• Quick-lock pin that fits into a cross-hole
  
  

• Widely used in trailers, agricultural equipment, tools
  
  

• Reusable, easy install/remove by hand
  
  

• Standard: DIN 11024
  
  

📌 6. Circular Cotter Pin (Circle Cotter Pin)

• Legs curl around to form a closed ring
  
  

• Safe for use in dynamic environments – no sharp edges
  
  

• Used In: Light machinery, safety guards
  
  

• Material: Spring steel, SS
  
  

📌 7. Split Dowel Pin / Grooved Cotter Pin

• Combines features of a dowel pin and cotter
  
  

• Sometimes used where a press fit with slight deformation is needed
  
  

• Custom shapes as per OEM specs
  
  

📌 8. Tapered Cotter Pin

• One leg is slightly tapered for easy insertion and tight grip
  
  

• Less common but available on request
  
  

• Typically used in specific automotive or structural applications
  
  

📌 9. Nylon Cotter Pin

• Lightweight, non-conductive, corrosion-resistant
  
  

• Ideal for electrical and moisture-prone environments
  
  

• Color-coded variants available
  
  

📐 Available Sizes:

• Diameters: 1 mm to 10 mm (metric), 1/32" to 3/8" (imperial)
  
  

• Lengths: 6 mm to 150 mm (or custom)
  
  

• Special sizes and shapes available as per drawing or sample
  
  

🌟 Neo Fasteners Cotter Pin Features:

• ISO 9001:2015 Certified
  
  

• RoHS Compliant – Safe for global markets
  
  

• Finishes: Plain, Zinc Plated, Nickel, Black Oxide, Passivated, Copper Coated
  
  

• Available In: Loose bulk, poly bags, kits, and customized packing
  
  

🧰 Common Applications:

• Automotive assemblies (axles, wheel hubs)
  
  

• Agricultural machinery
  
  

• Industrial equipment and couplings
  
  

• Railways and defense
  
  

• DIY, marine, and electrical panels