JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M42 x 3

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JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M42 x 3

SKU:JBO-514249

Specifications at a glance

Thread Form	Metric
Size	M42
Pitch	3
Gauge Type	Plug Gauge (NoGo)

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£131.59

Prices shown ex. VAT

5 days estimated lead time — subject to availability

Free delivery over £50 ex VAT

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14-day returns

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01732 887334

Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Compatible certification

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UKAS Calibration Certificate - Screw Plug Gauges up to 100mm/4" (Up To 14 DAYS FROM STOCK) - 1 Per Gauge
£43.60Available to order

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Description

The JBO Thread Plug Gauge (NoGo) – Metric Fine LH, 6H, M42 x 3 is a precision NoGo plug gauge tailored for metric fine threads. This left-hand (LH) version is designed to check internal threads in LH-hole applications, with a nominal M42 x 3 size and 6H internal tolerance to ensure reliable, repeatable inspections.

Metric Fine Thread Precision (M42 x 3, 6H): Specifically engineered for metric fine threads, enabling fast, accurate NoGo checks of hole size to meet standard specifications.
Left-Hand Thread Compatible: Built for left-hand threaded holes, allowing correct gauging without swapping tools or setups.
Hardened Steel Durability: Crafted from hardened steel for long wear resistance in busy workshop environments, preserving accuracy over time.

Designed to support quality control across manufacturing, maintenance, and assembly workflows, this gauge helps you verify hole tolerances quickly and confidently. Its robust construction minimizes downtime, reduces rework, and provides consistent results, making it a dependable choice for reliable LH-thread hole inspections at the M42 x 3 size with 6H tolerance.

Part Numbers

Protool Part Number: JBO-514249
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.

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Full Range: JBO Thread Plug Gauges (NoGo) - Metric Fine

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You are viewing JBO-514249. Click any other SKU to view its full details.

Product SKU	Size	Pitch	Price	Stock

JBO-510384	M42	1	£99.13	5 days
JBO-510396	M45	1	£104.39	5 days
JBO-510410	M48	1	£111.84	5 days
JBO-510435	M50	1	£117.33	5 days
JBO-510445	M52	1	£121.72	5 days
JBO-513566	M55	1	£129.40	5 days
JBO-510458	M56	1	£131.59	5 days
JBO-510465	M58	1	£141.45	5 days
JBO-513147	M60	1	£148.02	5 days
JBO-513479	M62	1	£167.77	5 days
JBO-513731	M64	1	£169.96	5 days
JBO-514016	M65	1	£172.16	5 days
JBO-516620	M68	1	£182.03	5 days
JBO-510507	M70	1	£186.41	5 days
JBO-520033	M72	1	£194.08	5 days
JBO-520034	M75	1	£207.25	5 days
JBO-520035	M76	1	£208.34	5 days
JBO-520036	M78	1	£221.49	5 days
JBO-520037	M80	1	£219.30	5 days
JBO-510386	M42	1.5	£84.99	5 days
JBO-510397	M45	1.5	£89.92	5 days
JBO-510412	M48	1.5	£95.74	5 days
JBO-510436	M50	1.5	£99.13	5 days
JBO-510446	M52	1.5	£102.32	5 days
JBO-510454	M55	1.5	£109.65	5 days
JBO-510459	M56	1.5	£111.84	5 days
JBO-510466	M58	1.5	£115.14	5 days
JBO-510483	M60	1.5	£119.52	5 days
JBO-510488	M62	1.5	£123.91	5 days
JBO-510493	M64	1.5	£127.21	5 days
JBO-510496	M65	1.5	£131.59	5 days
JBO-510501	M68	1.5	£134.87	5 days
JBO-510508	M70	1.5	£141.45	5 days
JBO-510511	M72	1.5	£149.13	5 days
JBO-510513	M75	1.5	£155.70	5 days
JBO-513382	M76	1.5	£188.61	5 days
JBO-510517	M78	1.5	£162.28	5 days
JBO-510543	M80	1.5	£167.77	5 days
JBO-510546	M82	1.5	£169.96	5 days
JBO-510547	M85	1.5	£176.54	5 days
JBO-510551	M88	1.5	£182.03	5 days
JBO-510561	M90	1.5	£186.41	5 days
JBO-513056	M92	1.5	£194.08	5 days
JBO-520054	M98	1.5	£246.71	5 days
JBO-510089	M100	1.5	£207.25	5 days
JBO-510092	M102	1.5	£248.90	5 days
JBO-513006	M105	1.5	£219.30	5 days
JBO-520055	M108	1.5	£265.35	5 days
JBO-513931	M110	1.5	£230.28	5 days
JBO-510105	M112	1.5	£267.55	5 days
JBO-520056	M115	1.5	£276.31	5 days
JBO-520057	M118	1.5	£284.00	5 days
JBO-520058	M120	1.5	£286.19	5 days
JBO-520059	M122	1.5	£309.22	5 days
JBO-520060	M125	1.5	£301.53	5 days
JBO-510124	M128	1.5	£325.67	5 days
JBO-517862	M130	1.5	£313.60	5 days
JBO-520061	M132	1.5	£319.09	5 days
JBO-517018	M135	1.5	£334.44	5 days
JBO-520062	M138	1.5	£341.01	5 days
JBO-520063	M140	1.5	£346.50	5 days
JBO-520064	M142	1.5	£345.40	5 days
JBO-520065	M145	1.5	£357.46	5 days
JBO-520066	M148	1.5	£367.34	5 days
JBO-518078	M150	1.5	£373.92	5 days
JBO-510389	M42	2	£87.63	5 days
JBO-510400	M45	2	£93.55	5 days
JBO-510415	M48	2	£98.69	5 days
JBO-510439	M50	2	£102.10	5 days
JBO-510448	M52	2	£106.14	5 days
JBO-510456	M55	2	£112.95	5 days
JBO-510461	M56	2	£115.14	5 days
JBO-510467	M58	2	£118.42	5 days
JBO-510484	M60	2	£123.91	5 days
JBO-510489	M62	2	£127.21	5 days
JBO-510494	M64	2	£131.59	5 days
JBO-510497	M65	2	£134.87	5 days
JBO-510502	M68	2	£141.45	5 days
JBO-510509	M70	2	£144.74	5 days
JBO-510512	M72	2	£150.21	5 days
JBO-510514	M75	2	£155.70	5 days
JBO-510516	M76	2	£166.67	5 days
JBO-510518	M78	2	£169.96	5 days
JBO-510544	M80	2	£167.77	5 days
JBO-516627	M82	2	£178.73	5 days
JBO-510548	M85	2	£178.73	5 days
JBO-510552	M88	2	£196.27	5 days
JBO-510562	M90	2	£186.41	5 days
JBO-510565	M92	2	£191.89	5 days
JBO-510567	M95	2	£196.27	5 days
JBO-510568	M98	2	£201.76	5 days
JBO-510090	M100	2	£207.25	5 days
JBO-516575	M102	2	£252.20	5 days
JBO-510093	M105	2	£219.30	5 days
JBO-510095	M108	2	£266.46	5 days
JBO-510103	M110	2	£229.17	5 days
JBO-516577	M112	2	£274.12	5 days
JBO-513918	M115	2	£276.31	5 days
JBO-519513	M118	2	£288.38	5 days
JBO-510122	M120	2	£286.19	5 days
JBO-516578	M122	2	£309.22	5 days
JBO-514978	M125	2	£301.53	5 days
JBO-520077	M128	2	£309.22	5 days
JBO-514719	M130	2	£313.60	5 days
JBO-510129	M132	2	£319.09	5 days
JBO-520078	M135	2	£326.75	5 days
JBO-520079	M138	2	£335.54	5 days
JBO-518882	M140	2	£338.82	5 days
JBO-520081	M142	2	£345.40	5 days
JBO-519516	M145	2	£350.89	5 days
JBO-520083	M148	2	£359.66	5 days
JBO-510149	M150	2	£365.15	5 days
JBO-510391	M42	3	£102.98	5 days
JBO-510402	M45	3	£108.78	5 days
JBO-510418	M48	3	£115.14	5 days
JBO-510441	M50	3	£150.21	5 days
JBO-510450	M52	3	£123.91	5 days
JBO-516616	M55	3	£149.13	5 days
JBO-510462	M56	3	£148.02	5 days
JBO-510468	M58	3	£155.70	5 days
JBO-513226	M60	3	£159.00	5 days
JBO-513528	M62	3	£166.67	5 days
JBO-513531	M64	3	£166.67	5 days
JBO-510498	M65	3	£168.86	5 days
JBO-513536	M68	3	£182.03	5 days
JBO-520102	M70	3	£183.12	5 days
JBO-513126	M72	3	£186.41	5 days
JBO-510515	M75	3	£198.46	5 days
JBO-520103	M76	3	£199.57	5 days
JBO-516626	M80	3	£209.44	5 days
JBO-510549	M85	3	£223.68	5 days
JBO-510563	M90	3	£235.75	5 days
JBO-516857	M95	3	£250.01	5 days
JBO-510091	M100	3	£264.27	5 days
JBO-517741	M105	3	£276.31	5 days
JBO-510104	M110	3	£287.29	5 days
JBO-517090	M115	3	£303.75	5 days
JBO-520104	M120	3	£314.71	5 days
JBO-510123	M125	3	£327.86	5 days
JBO-513757	M130	3	£342.12	5 days
JBO-516892	M135	3	£356.38	5 days
JBO-510145	M140	3	£370.62	5 days
JBO-512979	M145	3	£384.88	5 days
JBO-520105	M150	3	£398.03	5 days
JBO-513506	M52	4	£141.45	5 days
JBO-516925	M55	4	£160.09	5 days
JBO-510463	M56	4	£148.02	5 days
JBO-520106	M58	4	£161.19	5 days
JBO-510487	M60	4	£159.00	5 days
JBO-510490	M62	4	£163.39	5 days
JBO-510495	M64	4	£166.67	5 days
JBO-514098	M65	4	£168.86	5 days
JBO-520107	M68	4	£178.73	5 days
JBO-518830	M72	4	£186.41	5 days
JBO-520109	M75	4	£198.46	5 days
JBO-520110	M76	4	£199.57	5 days
JBO-510545	M80	4	£209.44	5 days
JBO-510550	M85	4	£223.68	5 days
JBO-520111	M90	4	£235.75	5 days
JBO-520112	M95	4	£250.01	5 days
JBO-517074	M100	4	£264.27	5 days
JBO-516044	M105	4	£276.31	5 days
JBO-513659	M110	4	£287.29	5 days
JBO-520113	M115	4	£303.75	5 days
JBO-517003	M120	4	£314.71	5 days
JBO-520114	M125	4	£327.86	5 days
JBO-520115	M130	4	£342.12	5 days
JBO-520116	M135	4	£356.38	5 days
JBO-520117	M140	4	£370.62	5 days
JBO-520118	M145	4	£384.88	5 days
JBO-520119	M150	4	£398.03	5 days
JBO-520120	M70	6	£200.65	5 days
JBO-510510	M72	6	£203.95	5 days
JBO-520122	M76	6	£210.53	5 days
JBO-510542	M80	6	£223.68	5 days
JBO-520123	M85	6	£237.94	5 days
JBO-516631	M90	6	£253.31	5 days
JBO-520124	M95	6	£270.84	5 days
JBO-520125	M100	6	£284.00	5 days
JBO-510388	M42	1.5	£104.29	5 days
JBO-510398	M45	1.5	£108.12	5 days
JBO-510413	M48	1.5	£117.33	5 days
JBO-510437	M50	1.5	£120.61	5 days
JBO-510447	M52	1.5	£124.99	5 days
JBO-516615	M55	1.5	£137.06	5 days
JBO-518946	M56	1.5	£141.45	5 days
JBO-518533	M58	1.5	£145.83	5 days
JBO-514813	M60	1.5	£148.02	5 days
JBO-510390	M42	2	£107.15	5 days
JBO-516609	M45	2	£114.03	5 days
JBO-510416	M48	2	£123.91	5 days
JBO-524417	M50	2	£128.29	5 days
JBO-510449	M52	2	£132.68	5 days
JBO-513206	M55	2	£150.21	5 days
JBO-524418	M56	2	£145.83	5 days
JBO-524419	M58	2	£145.83	5 days
JBO-513540	M60	2	£151.32	5 days
JBO-524475	M62	2	£168.86	5 days
JBO-523684	M64	2	£174.35	5 days
JBO-526516	M65	2	£172.16	5 days
JBO-526518	M68	2	£177.65	5 days
JBO-513441	M70	2	£182.03	5 days
JBO-524469	M72	2	£187.50	5 days
JBO-524470	M75	2	£196.27	5 days
JBO-517395	M76	2	£202.87	5 days
JBO-517904	M78	2	£212.72	5 days
JBO-519864	M80	2	£209.44	5 days
JBO-524471	M82	2	£224.79	5 days
JBO-517009	M85	2	£219.30	5 days
JBO-510387	M42	1.5	£112.95	5 days
JBO-519782	M45	1.5	£115.14	5 days
JBO-513661	M48	1.5	£131.59	5 days
JBO-518897	M50	1.5	£127.21	5 days
JBO-514158	M52	1.5	£130.48	5 days
JBO-517423	M55	1.5	£144.74	5 days
JBO-523163	M56	1.5	£154.62	5 days
JBO-515466	M58	1.5	£152.43	5 days
JBO-514890	M60	1.5	£160.09	5 days
JBO-517118	M42	2	£116.23	5 days
JBO-515068	M45	2	£123.91	5 days
JBO-516610	M48	2	£129.40	5 days
JBO-524420	M50	2	£142.55	5 days
JBO-515069	M52	2	£141.45	5 days
JBO-517064	M55	2	£155.70	5 days
JBO-524421	M56	2	£160.09	5 days
JBO-524422	M58	2	£164.47	5 days
JBO-524423	M60	2	£163.39	5 days
JBO-520040	M42	1	£130.48	5 days
JBO-520041	M45	1	£137.06	5 days
JBO-514651	M48	1	£149.13	5 days
JBO-516867	M50	1	£154.62	5 days
JBO-517230	M52	1	£161.19	5 days
JBO-517232	M55	1	£169.96	5 days
JBO-517234	M56	1	£167.77	5 days
JBO-517237	M58	1	£185.31	5 days
JBO-517240	M60	1	£195.18	5 days
JBO-513097	M42	1.5	£107.03	5 days
JBO-510399	M45	1.5	£112.95	5 days
JBO-510414	M48	1.5	£122.80	5 days
JBO-510438	M50	1.5	£123.91	5 days
JBO-513500	M52	1.5	£128.29	5 days
JBO-510455	M55	1.5	£141.45	5 days
JBO-510460	M56	1.5	£143.64	5 days
JBO-513186	M58	1.5	£152.43	5 days
JBO-513227	M60	1.5	£160.09	5 days
JBO-517283	M62	1.5	£163.39	5 days
JBO-517060	M64	1.5	£169.96	5 days
JBO-516618	M65	1.5	£174.35	5 days
JBO-517284	M68	1.5	£174.35	5 days
JBO-517285	M70	1.5	£180.92	5 days

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