Please log in here to access all benefits, including promotional discounts and faster checkouts.

JBO Thread Ring Gauge (GO) - BSW - Right Hand - Medium Class - 1/8 x 40

SKU:JBO-502615

The JBO Thread Ring Gauge (GO) for BSW, Right Hand, Medium Class, 1/8 x 40 is a precision Go gauge designed to verify external thread diameters on threaded components. It helps machinists, quality... Read more ↓
Thread FormBSW
Size1/8
Pitch40
Gauge TypeRing Gauge (GO)
View all specifications ↓
£114.03
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Compatible certification

The ones our customers buy most.

Description

The JBO Thread Ring Gauge (GO) for BSW, Right Hand, Medium Class, 1/8 x 40 is a precision Go gauge designed to verify external thread diameters on threaded components. It helps machinists, quality inspectors, engineers, and workshop teams quickly confirm that parts conform to the 1/8 x 40 BSW standard, ensuring reliable fits in assemblies and fixtures.

Crafted from hardened steel, this gauge combines durability with consistent performance in demanding workshop environments. The robust construction resists wear and maintains accurate dimensions, supporting long service life and reducing the need for frequent recalibration.

  • Accurate Go/Go verification: Quickly determine whether a part's external thread diameter meets the GO limit for 1/8 x 40 BSW, speeding up inspections and reducing rework.
  • Durable hardened steel construction: Built to withstand daily use, resist wear, and maintain precise dimensions for long service life in busy shops.
  • Easy-to-use inspection tool: Simple to read and use, enabling fast identification of conforming threads and a smoother QC workflow.

By integrating this Go gauge into your quality control process, you shorten setup times, improve measurement reliability, and boost confidence in threaded assemblies. Its durable design supports consistent performance across shifts and jobs, making it a dependable choice for production lines, workshops, and engineering labs alike.

Part Numbers

Protool Part Number
JBO-502615
Brand
JBO
Category
Gauge
No downloads are attached to this product yet.
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery

Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.

Returns

14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.

Technical Support

Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Trade Accounts

Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.

What time are Protool open?

We are open Monday to Friday between 8:30am and 5pm.

Do you offer Free Next Day delivery?

Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.

We also offer the following:

  • Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
  • DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
  • Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
  • DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.

For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.

*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: JBO Thread Ring Gauge (GO) - BSW

View full collection →

You are viewing JBO-502615. Click any other SKU to view its full details.

Product SKUSizePitchPriceStock Order
JBO-502615 Viewing1/840£114.03 5 days
JBO-502626 3/1624£84.55 5 days
JBO-502614 1/420£81.48 5 days
JBO-502631 5/1618£87.84 5 days
JBO-502629 3/816£92.11 5 days
JBO-502635 7/1614£97.27 5 days
JBO-502613 1/212£102.86 5 days
JBO-502640 9/1612£115.14 5 days
JBO-502633 5/811£123.91 5 days
JBO-502628 3/410£134.87 5 days
JBO-502638 7/89£156.81 5 days
JBO-502606 18£175.43 5 days
JBO-502608 1 1/87£196.27 5 days
JBO-503134 1 1/47£213.83 5 days
JBO-502611 1 3/86£235.75 5 days
JBO-503133 1 1/26£256.58 5 days
JBO-502610 1 3/45£299.34 5 days
JBO-502619 24.5£343.21 5 days

Other sizes in this range

with tools we think you'll like
All 18 →