Thread Protection Nut Caps
Our Thread Protection Nut Caps, also known as Cylindrical Nut Caps, Snap-On Nut & Bolt Caps, are made from high quality LDPE and are a quick push-fit solution to cover exposed nut, nuts with exposed threads with or without washers. This range of Caps are used to conceal fasteners but can also offer protection to the otherwise exposed threads from dirt, damage, corrosion, or injury.
The unique attributes of the nut and washer caps are that they have a clamping edge which grips underneath the chamfer on the nut providing a strong connection, internal ribs which deform when inserted onto the nut which further increase the clamping effect of the caps and a sealing lip which protects the nut, thread and in some variants the washer as well from the elements.
Customer Insight: Caps with larger inside lengths can not only be used to accomidate larger threads, but also larger or multiple nuts.
We stock sizes from M3 to M90 in a range of different lengths. We also offer telescopic caps which can be used for multiple lengths of thread.
Our range comes in black as standard as it is the most UV resistant, but we are able to manufacture custom requirements in any RAL colour. For further info on custom colour runs, please get in touch on 01233 713581.
Our LDPE can widstand constant temperatures of 70ºC , and is resistant to:
- Seawater
- Non-Oxidising Acids
- Non-Oxidising Alkaline Solutions
- Alcohol
- Fuels
- Oils
- Greases
Our entire range of Thread Protection Caps are also available on request in Polyporpelene, Nylon, TEEE and ETFE. We also offer Secure Nut & Bolt Caps and Domed Nut & Bolt Caps.
Where are Thread Protection Caps commonly used?
Thread protection caps are commonly used in the following applications:
- Flanged Assemblies
- Outside and Industrial Lighting
- Bridges
- Playgrounds
- Marine Systems
- Road Guardrails
Looking for a custom style or variant for your use? Call one of our experts on 01233 713 581

Categories
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End Caps
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EPDM Caps
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Eze Caps
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Post Caps
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Centre Pull Tab Caps
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PVC Pull Tab Caps
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Pipe Protection Caps
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Reversible Tapered Caps
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Driveshaft Caps
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Grease Nipple Caps
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Rebar Protection Caps
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Fencing Caps
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Silicone Caps
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Nut Caps
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Budget Caps
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Post Caps
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Threaded Caps
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Threaded Sealing Caps
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Unistrut End Caps
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Driveshaft Caps
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Eze Caps
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Fitting Guide
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Threaded Sealing Caps
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Threaded Caps
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PVC Caps
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Plugs & Stoppers
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Tapered Rubber Plugs
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Silicone Ribbed Plugs
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Silicone Tapered Plugs
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Silicone Plugs With Handle
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Silicone Step Plugs
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Silicone Pull Plugs
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Silicone Thread Masking Plugs
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Threaded Plugs
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Threaded Sealing Plugs
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Cylindrical Pull Tab Plugs
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Finned Pull Tab Plugs
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Fir Tree Plugs
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Reversible Tapered Plugs
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Round Tube Plugs
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Snap Fit Hole Plugs
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Stainless Steel Socket Pipe Plugs DIN 906
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Door Stoppers
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Door Wedge
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Finned Hole Plugs
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Plastic End Plugs
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Ribbed Pipe End Plugs
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Tapered Bungs
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Silicone Plugs
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EPDM Tapered Plugs
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Blanking Plugs
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Pull Tab Plugs
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Ventilation Plugs
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Door Stoppers
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Push Stoppers
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Snap Fit Bushes
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Liquid Tight Plugs
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Barrel Plugs
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Threaded Plugs
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Threaded Sealing Plugs
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Paper Tapered Plugs
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Washer Masking Plugs
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Measurement Guide
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Hole Plugs
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Silicone Double Flange Plugs
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Silicone Flange Plugs
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Furniture & Chair Feet
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Sofa Feet
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Screw In Furniture Feet
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Anti-Sink Feet
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Round Ferrules
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Square Ferrules
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Walking Stick Ferrules
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Crutch Feet
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Push In Feet
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Nail On Feet & Glides
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Plastic & Rubber Ferrules
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Chair Inserts
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Chair & Furniture Castors
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Insert Glides
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Saddle Feet
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Sofa Feet
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Screw On Feet
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Furniture & Chair Glides
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Stick On Feet & Pads
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School Chair & Furniture Feet
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Fitting Guide
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Adjustable Feet
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Economic Adjustable Feet
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Anti-Vibration Levelling Feet
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Balance Feet
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Slotted Head Adjustable Feet
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Rubber Adjustable Feet
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Stainless Steel Adjustable Feet
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Ready To Install Sets
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Weight Rated Articulated Feet
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Allen Key Adjustable Feet
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General Adjustable Feet
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Heavy Duty Tilting Feet
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Low Profile Adjustable Feet
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Weight Rated Tilting Feet
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Tilting Adjustable Feet
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Weight Rated Articulating Feet
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Pozi Base Adjustable Feet
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Polyamide Adjustable Feet
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One Piece Adjustable Feet
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Metal Adjustable Feet
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Machinery Mounting Feet
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Threaded Fittings & Fixings
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Fitting Guide
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Low Profile Adjustable Feet
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Hexagon Base Feet
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Cable Management
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Aluminium Cable Clips
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Braided Cable Sleeving
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Multi Cable Clips
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PVC Cable Sleeving
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Spiral Cable Wrap
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Cable Glands
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Heavy Duty P Clips
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Strain Relief
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Nylon P Clips
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Heavy Duty Large P Clamps
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Heavy Duty Small P Clamps
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Grommet Strip
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Rubber Grommets
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Cable Ties
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Heat Shrink
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Cable Tie Mounts
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Desk Cable Tidies
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Desk Cable Tidies
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Cable Protection Ramps
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Velcro Cable Management
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Plastic Grommet Strips
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Rubber Grommet Strips
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Bolts and Screws
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Cheese Head Slotted Screws DIN 84
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Pipe Plugs
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Hex Head Screws and Bolts
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Cap Screws
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Button Screws
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Countersunk Screws
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Pan Head Machine Screws
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Cheese Head Screws
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Security Fasteners
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Screws for Plastic
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Knurled Fasteners
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Grub Screws
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Threaded Rod (All Thread)
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Weld Studs
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Dowel Pins
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Retaining Clips
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Pipe Plugs and Nuts
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Small Bolts
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Stainless Steel Bolts By Metric Thread Size
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Large Bolts
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Mushroom Head Machine Screws
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Self Tapping Screws
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Wood Screws
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Construction Fasteners
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Wrench Keys and Drive Bits
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Washers
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Fibre Washers
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Bonded Sealing Washers
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Standard Nylon Washers
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Rubber Washers
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Peek Washers
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Silicone Washers
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Red Fibre Washers
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PTFE Washers
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FKM Washers
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Anti-Loss Washers
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Finishing Washers
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Headboard Washers
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Saddle Washers
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Stainless Steel Flat Washers
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Stainless Steel Spring Washers
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Stainless Steel Curved Washers
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Stainless Steel Serrated Washers
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Stainless Steel Finishing Washers
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Stainless Steel Tab Washers
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WRAS Washers
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Industrial Hardware
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General Handwheels
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Door Bolts
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Bolts & Latches
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Hinges
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Hinges
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Latches
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Camlocks
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Index Plungers
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Detent Pins
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Furniture Fixings
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Clamping Handles
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Bridge Handles
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Pull Handles
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Ball Knobs
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Threaded Handwheels
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Wing Screws & Knobs
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Knurled Thumbscrews
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Control Handwheels
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Plastic & Rubber Grips
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Drawer Slides
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Roof Support Systems
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Push Fit Knobs
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Adhesive Tapes
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Delete pls
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PTFE Tape
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Packing Tape
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Fragile Tape
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Cloth Tape
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PVC Electrical Insulation Tape
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Underground Cable Warning Tape
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Floor Marking Tape
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Safety Hazard Warning Tape
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Non Slip Tape
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Non-Adhesive Barrier Tape
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Double Sided Foam Tape
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Fleece Tape
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Self Amalgamating PVC Tape
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Self Amalgamating Silicone Tape
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Self Amalgamating EPR Tape
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Petroleum Tape
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Low Tack Paper Masking Tape
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UV Resistant Blue Masking Tape
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Protective Equipment
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Panel Fasteners
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School & Office Products
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Rubber Seals
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Product Samples
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Business Services
- Terms and conditions
Frequently Asked Questions
How fast can I get my order?
Need your parts tomorrow? Our rapid same day dispatch has got you covered! Simply place your order before 4pm Mon-Thurs or 2pm Friday and select our Next Day Delivery service in the shopping cart. We also offer Guaranteed AM delivery when required, in addition to a Saturday delivery option.
If you don't mind waiting, we have a Free delivery method for orders over £30, and an economic £4.85 2nd Class delivery for orders between £10-£30.
Can I get a Free Sample?
Free Samples can be requested through our product pages, displayed in the sizing table beside the product you require. Please note you can always give us a call on 01233 713 581 or contact us on Live Chat to discuss samples.
Do I need to Sign Up for an account?
You do not need to sign up to place an order, but it is recommended if you'd like to gain loyalty points, giving discount off future orders. To learn more about loyalty points, please view our rewards scheme page.
I am not sure what parts I need?
If you're unsure which part you need then please do not hesitate to give one of our friendly Sales Team a call on 01233 713 581 and they can assist you. Alternatively, we're active on Live Chat during office hours. You can open this using the button in the bottom right corner of the website. Alternatively, you can write to us using our contact form.
Do you offer Returns on Products?
We offer a return period on all of our products to give you peace of mind, to view our policies and learn more about this process should it be required, please see our returns policy page.
Can you supply different colours of this product?
In most cases we have the facilities to offer you different colours of a product, specific to your requirements. Minimum order quantities may apply depending on the manufacturing technique in question, but please get in touch with any queries you may have.
Is there a minimum order value?
Please note that there is a minimum order value of £10 through our website (inclusive of VAT).
If you're new to our website you may want to check out our frequently asked questions section for answers to common customer queries.
What do these abbrievations mean?
While browsing the website you may come across abbreviations used for material names that you are unfamiliar with. You can find an explanation for these in our material abbreviations guide.