23 products
Threaded Bar
threaded-bar
TIMCO Threaded Bars Grade 4.8 Silver - M8 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £4.50Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M6 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £9.08Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M10 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £23.23Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M10 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £8.00Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M12 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £11.00Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M6 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £3.80Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M16 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £36.07Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M6 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £8.24Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M12 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £33.79Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M12 x 300 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £8.51Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M8 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £16.16Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M8 x 300 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £3.78Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M6 x 300 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £2.23Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M20 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £39.89Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M16 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £50.98Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M12 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £29.11Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M20 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £97.03Incl. VAT
TIMCO Threaded Bars A2 Stainless Steel - M16 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £62.08Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M16 x 300 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £16.28Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M10 x 300 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £5.87Incl. VAT
TIMCO Threaded Bars Grade 4.8 Silver - M20 x 1000 (5pcs)
- Pack quantity
- 5 Pieces
- Price
- £28.30Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M10 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £20.38Incl. VAT
TIMCO High Tensile Threaded Bars Grade 8.8 Silver - M8 x 1000 (10pcs)
- Pack quantity
- 10 Pieces
- Price
- £13.13Incl. VAT
Choose The Right Threaded Bar For A Safe Fix
Threaded bar helps keep structures and panels firmly in place. It works well when normal bolts are not the right choice. You can cut it to the needed length during installation. Pick the correct size and material to get the best result.
What Is Threaded Bar and What Is It Used For?
Threaded bar is a straight metal rod. It has a thread running along its full length. It is also called studding, all-thread, or threaded rod.
You can cut it to any length you need. Fix it with nuts and washers on both ends. Join two lengths together using a connector nut.
Threaded bar fixings suit jobs where bolts are too short. They are used in construction, fabrication, and engineering. Common uses include hanging, bracing, anchoring, and clamping.
Always choose the right material and grade. The wrong choice leads to corrosion or joint failure.
Types of Threaded Bar Available
Different jobs need different types of threaded bar. Here are the main options and what each one does.
A2 Stainless Threaded Bar
Also known as Grade 304 stainless steel. Good corrosion resistance for most conditions. Ideal for outdoor and damp environments in the UK. The standard choice for general trade use.
A4 Stainless Threaded Bar (Marine Grade)
Also known as Grade 316 stainless steel. Higher resistance to salt water and harsh chemicals. Use this near the coast or in marine environments. It outlasts A2 grade in wet and aggressive conditions.
Bright Zinc Plated (BZP) Threaded Bar
A cost-effective option for dry indoor work. The zinc coating gives basic rust protection. Common in Grade 4.8 and high tensile Grade 8.8. Not suitable for outdoor or damp environments long term.
Hot Dip Galvanised Threaded Bar
Thicker zinc coating than bright zinc plated bar. Gives better protection in outdoor and exposed conditions. A good mid-range option between BZP and stainless. Suits structural and civil engineering applications.
High Tensile Threaded Bar (Grade 8.8)
Stronger than standard mild steel bar. Used in structural, heavy-duty, and load-bearing fixings. Always pair with Grade 8 nuts for a correct match. Check the grade marking before use on structural jobs.
Double Threaded Bar (Stud Bolts)
Threaded at both ends with a plain shank in the middle. One end screws into a tapped hole or component. The other end takes a nut and washer for clamping. Used in flanges, pipework, and mechanical assemblies.
How to Choose the Right Threaded Bar
Getting this wrong wastes time and money on site. Follow these steps before you order.
Step 1: Choose the right diameter. Metric sizes run from M6 up to M30 and beyond. Match the bar diameter to the load and fitting.
Step 2: Choose the correct length. Measure the full span of the fixing before ordering. Threaded bar can be cut to length on site. Use a hacksaw or angle grinder with a cutting disc. Clean the cut end and check nuts run freely after cutting.
Step 3: Match the grade to the load. Grade 4.8 suits light to medium general fixings. Grade 8.8 is for heavy-duty and structural work. Never mix grades across the same fixing assembly.
Step 4: Choose the right material. BZP suits dry indoor conditions only. A2 stainless suits most outdoor UK conditions. A4 stainless suits coastal and marine environments. Galvanised bar is a good outdoor option for structural work.
Key point on connector nuts: Two lengths of threaded bar can be joined end to end. Use a studding connector nut of the same diameter. The connector must match the thread pitch of both bars. A mismatched connector will strip the thread on both pieces.
Common Applications for Threaded Bar Fixings
Threaded bar is used across many trades and industries. It suits jobs where standard fasteners are not long enough.
Concrete and Masonry Anchoring
Threaded bar can be set into concrete using resin anchors. This creates a strong, permanent fixing point. Used in structural posts, frames, and handrails.
Suspended Ceiling Systems
Used to hang services, ductwork, and ceiling grids. The bar drops from the structure above. Adjust height using nuts and lock nuts.
Timber and Panel Clamping
Pass the bar through stacked timber or panels. Fix with washers and nuts on both ends. Clamps materials firmly without side movement.
Plumbing and Pipe Support
Threaded bar hangs pipe brackets and supports. The bar is cut to the drop height needed. Pipe clamps thread directly onto the bar.
Steel Frame Bracing
Used as a tension brace across steel frame panels. Tightened with nuts to remove any slack in the frame. Common in agricultural buildings and steel portal frames.
Window and Frame Fabrication
Threaded fixings help secure frame components together. Used alongside specialist window fixings in frame assembly. For more frame fixings, see our window fabrication screws.
Threaded Bar Materials: Which Grade Do You Need?
The material you choose affects strength and service life. Always match the grade to the working environment.
| Material | Grade | Best For | Avoid When |
|---|---|---|---|
| Bright Zinc Plated Steel | 4.8 or 8.8 | Dry indoor fixings and general construction | Any outdoor or damp location |
| Hot Dip Galvanised Steel | 8.8 | Structural outdoor work, civil engineering | Marine or coastal environments |
| A2 Stainless Steel | A2-70 | Outdoor and damp UK conditions | Saltwater or chemical exposure |
| A4 Stainless Steel | A4-70 or A4-80 | Coastal, marine, and chemical environments | No significant restrictions |
Important: Always pair the bar, nuts, and washers in the same material. Mixing stainless bar with zinc-plated nuts causes galvanic corrosion. The two metals react in damp conditions and corrode each other. Use a nylon washer as a barrier if mixing metals cannot be avoided.
Threaded Bar vs Standard Bolts: Which Should You Use?
Both do a similar job but in different ways. Knowing the difference helps you pick the right fixing.
Use Threaded Bar When
The fixing span is longer than any standard bolt. You need to cut the fixing to a custom length. You need to join two sections end to end. The job needs adjustment during or after installation.
Use a Standard Bolt When
The joint is a fixed, known size and depth. You want a single ready-to-use fastener. The assembly needs a bolt head for torque and tightening. Speed of installation matters on a repeat assembly.
Threaded bar is not a direct substitute for every bolt. It suits spanning, hanging, bracing, and anchoring work. For a standard removable joint, use a hex bolt and nut. You can also browse our engineering fasteners collection for bolts, nuts, and full fixing solutions.
Threaded Bar Selection Guide
Use this table as a quick reference before ordering. Always read the full product specification for load data.
| Application | Recommended Bar | Key Point |
|---|---|---|
| Indoor structural fixing | BZP Grade 8.8 threaded bar | Match nut grade to bar grade |
| General outdoor fixing | A2 stainless threaded bar | Minimum grade for UK outdoor use |
| Coastal or marine fixing | A4 stainless threaded bar | Higher resistance to salt and moisture |
| Concrete resin anchoring | Galvanised or A4 stainless bar | Check resin anchor compatibility |
| Joining two bar lengths | Matching studding connector nut | Same diameter and thread pitch required |
| Pipework and duct hanging | BZP or A2 stainless bar | Choose grade to suit the environment |
| Flanges and pipe assemblies | Double threaded bar (stud bolt) | Thread both ends must match the fitting |
| Heavy-duty bracing and tension | High tensile Grade 8.8 bar | Use Grade 8 nuts throughout |
Common Mistakes When Buying Threaded Bar
Small errors cause joint failure and wasted material. These are the most common ones to avoid.
Ordering the Wrong Diameter
The bar diameter sets the load the fixing can carry. Measure the fitting or tapped hole before ordering. A bar that is too narrow will fail under load.
Mixing Bar and Nut Grades
A Grade 8.8 bar needs Grade 8 nuts throughout. Using a weaker nut strips the thread under load. Always buy the bar and nuts as a matched set.
Using BZP Bar Outside
Zinc plated bar corrodes quickly in wet conditions. Use A2 stainless as the minimum for outdoor use. Using the wrong material outdoors causes early failure.
Not Cleaning the Cut End
A rough cut can damage the thread profile. Run a nut across the cut end before fitting. This checks the thread is clean and free to use.
Using the Wrong Connector Nut
Connector nuts must match the bar in diameter and pitch. A mismatched connector will cross-thread and fail. Always confirm the size before joining two bar lengths.
Mixing Dissimilar Metals
Stainless bar with zinc-plated nuts will corrode. The two metals react in damp or outdoor conditions. Always use the same material throughout the assembly.
Frequently Asked Questions
1. What is the difference between threaded bar, studding, and threaded rod?
All three names refer to the same type of fixing. It is a straight bar with thread running along the full length. In UK trade use, these terms are used interchangeably.
2. Can threaded bar be cut to length on site?
Yes. Cut it using a hacksaw or angle grinder with a cutting disc. After cutting, run a nut over the cut end to clean the thread. This removes any burrs and checks the thread is usable.
3. Can you use threaded bar in concrete?
Yes. Set the bar into concrete using a resin anchor system. This creates a strong, structural fixing point in solid concrete. Check that the resin anchor is rated for the bar diameter used.
4. What is the difference between A2 and A4 stainless threaded bar?
A2 stainless suits most outdoor and damp conditions in the UK. A4 stainless gives higher resistance to salt water and chemicals. Use A4 for coastal, marine, or chemical environments.
5. What does Grade 8.8 mean on threaded bar?
Grade 8.8 refers to the tensile strength of the steel. It is stronger than the standard Grade 4.8. Use Grade 8.8 bar for structural, heavy-duty, or load-bearing fixings. Always pair it with Grade 8 nuts across the full assembly.
6. How do I join two lengths of threaded bar together?
Use a studding connector nut of the same diameter and thread pitch. Thread each bar into the connector from opposite ends. Tighten both sides firmly to create a continuous, strong bar.
7. What is double threaded bar used for?
Double threaded bar has threads at both ends only. One end screws into a component or tapped hole. The other end takes a nut for clamping. It is used in flanges, pipework, and mechanical assemblies.
8. What nuts and washers should I use with threaded bar?
Always match the nut and washer material to the bar. Use the same diameter and thread pitch throughout. For Grade 8.8 bar, use Grade 8 nuts. For stainless bar, use stainless nuts and washers.
9. Is threaded bar suitable for outdoor use?
It depends on the material chosen. BZP steel is not suitable for long-term outdoor use. A2 stainless is the standard minimum for outdoor conditions. A4 stainless is correct for coastal or wet chemical environments.
10. What metric sizes does threaded bar come in?
Common UK metric sizes run from M6 to M30 and beyond. M8, M10, and M12 are the most used in general trade work. Larger diameters such as M16, M20, and M24 suit structural use. Always check the diameter matches your nuts and fittings exactly.
Find the Right Threaded Bar at JALFT
Threaded bar is one of the most versatile fixings available. Cut it to length, join it with connectors, and fix with nuts. It suits indoor, outdoor, structural, and general trade use.
Always check the diameter, grade, and material before ordering. Match every nut, washer, and connector to the same specification.
JALFT supplies threaded bar fixings for trade and DIY projects.
More Fixings Available at JALFT
Need fixings for engineering assemblies and panel work? Browse our full range of engineering fasteners and fixings including nuts, bolts, rivets, and machine screws.
For specialist window and frame assembly fixings, visit our specialist window screws collection.