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1-1/4" x 7 TPI x 3 Foot (914mm) BSW Coarse Zinc Low Tensile Allthread Threaded Rod IFI 136C

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SKU: 54W1143

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Upto $99
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$100 to $249
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Over $250
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Matching Parts

1-1/4" x 7 TPI UNC Coarse Zinc Grade 8 Hex Standard Nuts High Tensile AS2465

Technical Specifications

Specs - Allthread BSW UNC Coarse Low Tensile Zinc Silver IFI136C.pdf Thread Pitch Chart.pdf Imperial vs Metric Strength Chart.pdf hobson-article_fake-allthread.pdf hobson-article_undersized-allthread.pdf

More Information
System of Measurement	Imperial
Product	Allthread
Size	1-1/4"
Size & Thread Pitch	1-1/4" x 7 TPI BSW
Allthread Length (l)	3 Foot (914mm)
Thread Pitch	7 TPI
Thread	Coarse
Thread Direction	Right Hand
Is this compatible with UNC	Yes
Corrosion Protection Level	Moderate
Class Grade	Low Tensile Grade 2
Material	Carbon Steel
Finish	Zinc Plated
Closest size in mm	M30 (30mm)
Standard Made To	IFI 136C
Brand	Hobson Engineering

Dimensional data is a guide only. Tolerance differences exist between brands and batches

Description

1-1/4" x 7 TPI UNC Coarse UNC / BSW Threaded Rod are imperial continuous-thread rod in either UNC (IFI 136C, 60-degree American) or BSW Whitworth (AS3501, 55-degree) thread profiles, supplied in 3 ft (914mm) lengths.

Not sure what size or thread you have or need?

Compare your allthread to our visual size guide to confirm the diameter, thread and pitch before you order.

If you know the fastener diameter

Compare your fastener to our visual size guide to confirm size, pitch and length.

Open the identification guide ›

Allthread / threaded rod diagram showing diameter and thread

About UNC / BSW Threaded Rod

Imperial continuous-thread rod, supplied in 3 ft (914mm) lengths. UNC (Unified National Coarse) follows IFI 136C, the American profile with a 60-degree thread flank. BSW (British Standard Whitworth) follows AS3501, the Whitworth profile with a 55-degree flank. The two are NOT interchangeable: a UNC nut will not run on a BSW rod and vice versa. Check the standard on the SKU before ordering so it matches the thread you're working with.

Recommended use Indoor and dry-environment use only.

Also known as

UNC Threaded Rod · BSW Threaded Rod · UNC Allthread · BSW Allthread · Whitworth Allthread · Imperial Threaded Rod · Continuous Thread Rod

Pairs with

Matching UNC or BSW Hex Nuts · Imperial Flat Washers · Imperial Coupling Nuts

Frequently Asked Questions

What is imperial threaded rod and what is it used for?

Continuous-thread imperial rod, supplied in 3 ft (914mm) lengths and cut to size on site.

Used in legacy machinery and assemblies where the original thread is imperial, in turnbuckles and tensioning kits, and where a customer is matching an existing imperial thread already in place.

How do I cut threaded rod to length?

Cut with a hacksaw, abrasive cut-off wheel or band saw.

Run a nut onto the rod above the cut line first; cutting will leave a burr that fouls a fresh nut. After cutting, file or grind the cut end square and unscrew the nut back off. The nut clears the burr from the threads as it comes off, so a clean nut runs on without binding.

What strength class is this?

Refer to the product title for the property class and the head marking for the grade.

See the head marking chart and full strength table on our site for the full conversion table.

What standard is this manufactured to?

Manufactured to IFI 136C.

IFI 136C is the Industrial Fasteners Institute (USA) standard for unified imperial threaded rod (UNC coarse and UNF fine). Unified threads have a 60-degree flank angle. Physically incompatible with the 55-degree Whitworth (BSW / BSF) profile.

What hex nut do I need?

A matching imperial nut: same diameter, same TPI, same standard.

A matching UNC or UNF nut to the same standard. Unified nuts will not engage Whitworth (BSW / BSF) rod and vice versa. The 60-degree flank does not mesh with the 55-degree Whitworth profile.

How much thread engagement do I need into a nut?

Rule of thumb: at least one full diameter of engagement for full strength.

For 1/2" rod, full strength is reached at about 1/2" of thread engagement into the nut. For high-load or safety-critical joints, increase to 1.5 x diameter. Always leave at least three full threads protruding past the nut.

Where is imperial Allthread typically used?

Maintenance of older imperial machinery, turnbuckles and tensioning kits, and any installation where the existing thread is imperial.

Most new construction in Australia uses metric, so imperial Allthread is bought primarily to match an existing imperial assembly. Make sure the standard on the product matches the standard of the part you are mating to.

Material & Coating

Zinc Electroplated zinc on carbon steel. A thin (5 to 12 micron) bright (clear-passivated) zinc layer applied by electrolysis. Bright silvery finish.

Important NOT suitable for outdoor, wet, marine or treated-timber applications. The thin coating is consumed quickly by rainwater or treated-pine preservatives. For outdoor use, specify hot-dip galvanised.

Grade Imperial fasteners are classified as grade 2, 5, 8, 9, 10, 12. See the head marking chart and full strength table.

Thread Pitch & Terminology

Thread Pitch (Imperial) Imperial fasteners measure thread pitch as TPI (threads per inch), the number of thread peaks per inch of fastener length. Imperial systems include UNC (coarse), UNF (fine), BSW (Whitworth) and BSF (British Standard Fine). This product has 7 TPI, meaning 7 thread peaks per inch.

How to Measure

Fastener Length This product has no head, so the length is the overall length - measured from one end to the other.

Length This listing is the 3 foot (914mm) rod. Cut to the lengths you need on site.

Still not sure? See our step-by-step identification guide for help measuring your fastener.

Resources

Technical library PDFs

For full technical data including key product information, range and a CAD drawing, see our Technical PDFs library.

Measurement conversion calculators

Convert between metric and imperial sizes, gauge to mm, decimal to fraction and TPI to pitch with our measurement conversion calculators.

Pricing & Delivery

Includes GST, a Tax Invoice and Free Standard Delivery anywhere in Australia.

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Disclaimer

Technical data Researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately.

Measurements Sizes are taken from supplier catalogues or hand-measured and should be used as a guide. Minor variation between batches is normal. Stock is sourced from various suppliers, so differences may exist between batches in thread length, markings, appearance or finish.

Product Photos & PDF Data Sheets Represent the product type, not exact size. PDFs are a reference guide only. Specifications may change without notice.

If you see any problems with any of our specifications or you require additional information please contact us.

Delivery

Orders UNDER $30

Weigh less than 500grams

Exceptions: Tools, Kits, Bulky items = Sent as a parcel with tracking

Small orders that fit into the slot of your Letterbox are sent:

FREE with Aust Post Letter delivery with NO TRACKING and delivery between 4-12 business days

Select a Quicker delivery service

$7.00 Parcel Delivery 2-7 business days
From $12.00 Express Delivery 1-4 business days
From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days

Click & Collect - Warehouse pickup

Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday

Orders OVER $30

Weigh more than 500grams

Included is orders under $30 but weigh more than 500grams or wont fit in the slot of your letterbox

Including Large and Bulky heavy orders are sent:

FREE as a Parcel Delivery WITH TRACKING and delivery between 2-7 business days

Select an Express delivery service

From $12.00 Express Delivery 1-4 business days
From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days

Click & Collect - Warehouse pickup

Unit 9, 93 Rivergate Place, Murarrie, QLD

Place your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday

All delivery dates are estimated and depend on stock availability, delivery location, service chosen, size of order, time of year, when order was placed e.g long weekends or sale periods.

Further delivery information can be found on our Delivery page

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Supplier Details

MPN	ASMSZW1250914, RTRWZ300032
UPC	9314818232630, 9337357040153