Author Archives: Caleb Components

Why Use Extractable Dowel Pins? (The Blind Hole Problem)

Imagine you are servicing a heavy stamping die or an injection mold. The alignment pins are pressed into a “blind hole”—a hole that does not drill all the way through the part.

If you use a standard solid pin, there is no way to tap it out from the reverse side. Technicians are often forced to weld a nut to the top of the pin or attempt to drill it out. This ruins the pin, risks damaging the expensive surrounding component, and wastes valuable production time.

Extractable pins completely eliminate this issue, offering three massive benefits:

  1. Zero Component Damage: You pull the pin cleanly without marring the workpiece.
  2. Rapid Maintenance: Molds, fixtures, and dies can be stripped down and rebuilt in a fraction of the time.
  3. Repeatable Accuracy: Because the removal process is non-destructive, the integrity of the reamed hole is preserved for future assemblies.

How to extract them: Step-by-Step

Removing these pins requires the right mechanical leverage. Never use pliers or vice grips, as they will score the precision-ground exterior.

  1. Clear the Thread: Ensure the internal thread is free of debris, grease, or metal shavings.
  2. Engage the Tool: Thread a matching pull-bolt, a mechanical puller sleeve, or a specialized slide hammer into the pin.
  3. Apply Axial Force: Use the tool to apply a straight, perpendicular upward force. The slide hammer will pop the pin out cleanly, even if it is a heavy press-fit.

Where can I buy Extractable Dowel Pins?

There are available to buy directly through our online store:

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Ultimate Guide to Shakeproof Washers: Stop Loose Screws for Good.

Loose fasteners can cause catastrophic equipment failure. Vibrations from motors, vehicles, and daily use slowly turn screws until they detach. Regular flat washers cannot prevent this. You need shakeproof washers.

This guide explains how these small components protect your projects from severe vibration.

What is a Shakeproof Washer?

A shakeproof washer is a specialized locking component designed to prevent nuts, bolts, and screws from loosening. Unlike standard flat washers that just distribute weight, these hardware pieces use mechanical tension and physical barriers to grip the mating surfaces. They are critical in high-vibration environments like automotive engines, industrial machinery, and household appliances.

The Core Types of Shakeproof Washers

Choosing the right type depends on your specific assembly material and the level of vibration.

1. External Tooth Lock Washers

  • Design: Teeth extend outward from the outer rim.
  • Mechanism: The teeth bite into the bolt head and the mating surface.
  • Best For: Maximum torsional resistance with large screw heads.

2. Internal Tooth Lock Washers

  • Design: Teeth project inward toward the center hole.
  • Mechanism: The teeth bite into the shank of the fastener.
  • Best For: Small screw heads or applications requiring a clean, snag-free exterior finish.
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How Starlock Washers Work

Standard washers merely distribute pressure or prevent a nut from backing off a bolt. Starlock Washers serve as standalone retaining clips. When you slide the washer down a plain cylindrical shaft, the angled internal teeth deflect outward. The moment any back-off force is applied, those sharp teeth bite deeply into the surface of the shaft—whether it is made of steel, plastic, or composite material. This creates an immediate, permanent grip.

Key Benefits:

  • Zero Threading Required: Saves time by completely removing the need to cut threads or machine snap-ring grooves.
  • Vibration Resistant: Provides persistent tension to stop components from rattling loose on moving machinery.
  • Instant Assembly: Easily pushes manually or via automated assembly tools onto plastic studs or metal axles.

Here at Caleb Components, we offer Uncapped Starlock Washers, available to purchase directly online.

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Master Your Mess: The Ultimate Guide to Tool Clips

A cluttered workspace slows you down and sparks frustration. Tool Clips offer a simple, highly effective way to reclaim your wall space and organize your gear. Here is everything you need to know about choosing and installing the perfect Tool Clips for your shop, garage, or shed.

Why Tool Clips Are Essential:

  • Maximize Space: They lift items off your workbench and onto unused wall space.
  • Instant Access: You can see every tool at a glance without digging through drawers.
  • Protect Gear: Storing tools securely prevents them from banging together and getting damaged.
  • Versatile Hold: They grip everything from thin screwdrivers to heavy push brooms.

Browse our full range of Tool Clips online:

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The Ultimate Guide to Split Cotter Pins: Simple, Reliable Fasteners

Split cotter pins are simple, highly effective metal fasteners used to secure machinery components. They prevent nuts, bolts, and pins from vibrating loose during operation.

A split cotter pin consists of a single piece of wire bent in half, forming a rounded eyelet head at one end and two unequal tines at the other.

  • The Design: The unequal length of the tines makes them easy to separate during installation.
  • The Mechanism: You insert the pin into a pre-drilled hole (often in a clevis pin or a castellated nut).
  • The Locking Action: Once inserted, you bend the tines outward to lock the pin firmly in place.

⚙️Key Applications and Uses

  • Castellated Nuts: Secures wheel bearings and automotive steering linkages.
  • Clevis Pins: Locks pivot points on construction and agricultural machinery.
  • Marine Rigging: Holds critical sailboat rigging secure against rough waves.
  • Aeronautics: Provides fail-safe mechanical backups on control rods.

Meet the Belleville Washer: The Heavy-Duty Spring Hiding in Plain Sight

Ever wonder how industrial machines stay tightly bolted together under extreme heat and violent vibrations? Standard flat washers can’t handle it. That is where the Belleville washer comes in.

Also known as a coned-disc spring, this slightly cone-shaped washer acts like a heavy-duty mechanical spring. Instead of just sitting flat, it flexes under pressure to maintain constant tension on a bolt.

Here is why they are engineering lifesavers:

  • Absorbs Vibrations: They act like shock absorbers, keeping bolts from backing out.
  • Handles Extreme Heat: They expand and contract with temperature shifts to prevent joint loosening.
  • Saves Space: They support massive mechanical loads in a fraction of the space of a coil spring.
  • Customisable Power: You can stack them in different directions to multiply either their strength or their flexibility.

You can shop our full range of Belleville Washers online:

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Learn more about our D1400 & D1300 Circlips…

D1400 are External Circlips and D1300 are Internal Circlips, and are the most popular form of Standard Circlips.

The D1400 External Circlips are the same as DIN 471 External Circlips and are designed to be fitted on to shafts with grooves.

D1300 Internal Circlips are the same as DIN 472 Internal Circlips are are used within bores with grooves.

We stock these Circlips online in Carbon Spring Steel and Stainless Steel. However other bespoke materials can be quoted for, including Inconel, Titanium and Phosphor Bronze.

To order directly online, please follow this link below.

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