Category: Un thread gauges

UNS thread ring & plug gauges supplier

UNS thread gauge is Unified Special Pitch thread gauge

GO & NOGO, RH(ring hand)  & LH(left hand) available

As these UNS thread gages is special, so most of them are not in stock, these gages need custom production.

Ring gages need two weeks to be finished, plug gages need ten days to be finished.

Standard tolerance: Plug 2B &  ring 2A

Classes 2A and 2B are the most commonly used for general applications, including production of nuts, screws, and bolts.

Internal thread tolerance class: 1B、2B、3B;

External thread tolerance class: 1A、2A、3A

3A 3B will be used when closer tolerance required.

Material: GCr15

For special gauges without stock, we can provide special custom production service,  one pc is also acceptable,

All our UNS thread ring gages and plug gages are manufactured compliance to standard: ASME B1.2

• Material：Oil hardened tool steel-Gcr15, high wear resistance.
• Hardness: 58-62 HRC
• Ring gages are solid; Plug gauges are Taperlock- double ends with one handle. our solid ring gages can be used directly, no need setting plug gages to test them in advance. The advantage of Taper-lock style is when one end worn out, one new end can be replaced quickly and easily.The handle and end in good condition can be used again.
• All gages are brand new
• Gage manufacturer ISO9001 certified
• gaugestools know the importance of controlling temperature and humidity when testing gages, the temperature will be 20 degree +- 0.5 degree, the humidity will be 45%-65%.
• Long form calibration certificate from ISO17025 accredited lab can be provided, but it need to be told in advance, and need extra costs.
• We can provide laser marking service on the gauges. For example, clents’ Logo.
• Delivery time: 3-5 days.We will send goods by express, Fedex, DHL or UPS. A tracking number will be sent to clients once shipped.
• all these gauges are fixed limit gauges, inspecting thread on a pass/ fail basis, not checking detailed size of thread.

We have as below sizes of UNS thread gauges

SM05 SM1 SM2 thread gages 

RMS (0.800”-36) microscope threads(Φ 20.32-36 TPI RMS) thread gauge

0.800″-36

UNF thread gages in stock

UNEF thread gages in stock

UNC thread gages in stock

D,d =Major diameter  D2,d2=Pitch diameter   D1,d1=Minor diameter

Thread angle: 60 degree

Crest and root are flat.

H=0.86602540P; 5H/8=0.54126588P;  3H/8=0.32475953P

H/4=0.12650635P;  H/8=0.10825318P

Standard：ASME B1.2-1983  ASMEB1.3-2007

We accept payment of T/T (bank transfer), Paypal and Credit card.

We usually send goods by express, DHL or UPS.

How to order:

• Specify diameter, for example, 1/2″
• Specify TPI, for example, TPI 14
• Specify thread form, for example, UNS
• Specify ring gage or plug gage, ring gage for checking external thread, plug gauge for checking internal thread.
• Specify class of fit, for example: 3A
• Specify quantity
• After receiving above information, we will make an invoice and send money request, then clients can pay it.

Quality Policy:

At gaugestools, we strive to offer clients quality metric thread ring gages and plug gauges with competitive price and quick shipment. We not only strive to meet clients’ expectations, but also exceed clients’ expectations by continual improvements .

Return Policy:

We will exchange or refund in one week if clients found any products not quality enough or meet clients’ expectations. After receiving our products, once clients have anywhere not satisfied, please contact us at once, clients can send us Email, or contact us with livechat,  we will deal with clients’ problems in quick time, we are committed to providing 100% customer satisfaction.

UNEF thread gauges manufacturer & supplier

UNEF thread gaug is  Unified National Extra Fine thread gauge

UNEF means the TPI should be big, (TPI is more,the thread if finer) For UNEF thread, the usual TPI is 18,20,24,28,32.

Extra-fine-thread series, UNEF, is applicable where even finer pitches of threads are desirable, as for short lengths of engagement and for thin-walled tubes, nuts, ferrules, or couplings. It is also generally applicable under the conditions stated above for the fine threads.

We have UNEF screw ring gauges and screw plug gauges in stock, we can send out goods the same day.

GO & NOGO, RH(ring hand)  & LH(left hand) available

Standard tolerance: Plug 2B &  ring 2A

Internal thread tolerance class: 1B、2B、3B;

External thread tolerance class: 1A、2A、3A

For some special UNEF thread gages, it need custom production.

Ring gages need two weeks to be finished, plug gauges need ten days to be finished.

• Material：Oil hardened tool steel-Gcr15, high wear resistance.
• Hardness: 58-62 HRC
• Ring gages are solid; Plug gauges are Taperlock- double ends with one handle. our solid ring gages can be used directly, no need setting plug gages to test them in advance. The advantage of Taper-lock style is when one end worn out, one new end can be replaced quickly and easily.The handle and end in good condition can be used again.
• All gages are brand new
• Gage manufacturer ISO9001 certified
• gaugestools know the importance of controlling temperature and humidity when testing gages, the temperature will be 20 degree +- 0.5 degree, the humidity will be 45%-65%.
• Long form calibration certificate from ISO17025 accredited lab can be provided, but it need to be told in advance, and need extra costs.
• We can provide laser marking service on the gauges. For example, clents’ Logo.
• Delivery time: 3-5 days.We will send goods by express, Fedex, DHL or UPS. A tracking number will be sent to clients once shipped.
• all these gauges are fixed limit gauges, inspecting thread on a pass/ fail basis, not checking detailed size of thread.

Big stock of as below standard sizes:

No 12-32 UNEF      1/4-32 UNEF      5/16-32 UNEF    3/8-32 UNEF

7/16-28 UNEF        1/2-28 UNEF      9/16-24 UNEF     5/8-24 UNEF

11/16-24 UNEF     3/4-20 UNEF      13/16-18 UNEF    13/16-20 UNEF

7/8-20 UNEF        15/16-20 UNEF   1-20 UNEF             1 1/16-18 UNEF

1 1/8-18 UNEF     1 3/16-18 UNEF    1 1/4-18 UNEF      1 5/16-18 UNEF

1 3/8-18 UNEF     1 1/2-18 UNEF    1 9/16-18 UNEF     1 5/8-18 UNEF

1 11/16-18 UNEF

D,d =Major diameter  D2,d2=Pitch diameter   D1,d1=Minor diameter

Thread angle: 60 degree

Crest and root are flat.

H=0.86602540P; 5H/8=0.54126588P;  3H/8=0.32475953P

H/4=0.12650635P;  H/8=0.10825318P

Standard：ASME B1.2-1983  ASMEB1.3-2007

How to order:

• Specify diameter, for example, 1/2″
• Specify TPI, for example, TPI 28
• Specify thread form, for example, UNEF
• Specify ring gage or plug gage, ring gage for checking external thread, plug gauge for checking internal thread.
• Specify class of fit, for example: 3A
• Specify quantity
• After receiving above information, we will make an invoice and send money request, then clients can pay it.

Quality Policy:

At gaugestools, we strive to offer clients quality metric thread ring gages and plug gauges with competitive price and quick shipment. We not only strive to meet clients’ expectations, but also exceed clients’ expectations by continual improvements .

Return Policy:

We will exchange or refund in one week if clients found any products not quality enough or meet clients’ expectations. After receiving our products, once clients have anywhere not satisfied, please contact us at once, clients can send us Email, or contact us with livechat,  we will deal with clients’ problems in quick time, we are committed to providing 100% customer satisfaction.

We 100% be sure gauges’s quality, when clients received goods, if found any not well, clients can give back to us, we will undertake all the loss including shipping cost .

We accept payment of T/T (bank transfer), Paypal and Credit card.

We usually send goods by express, DHL or UPS.

UNF thread ring gages and plug gauges manufacturer & supplier-gaugestools

UNF thread gauge is UNIFIED  NATIONAL FINE thread gage with 60 degree thread angle.

Fine thread series-UNF is suitable for the production of bolts, screws, and nuts and for other applications where the Coarse series is not applicable. External threads of this series have greater tensile stress area than comparable sizes of the Coarse series. The fine series is suitable when the resistance to stripping of both external and mating internal threads equals or exceeds  the tensile load carrying capacity of the externally threaded members. it is also used where the length of engagement is short, where a smaller lead angle is desired, where the wall thickness demands a fine pitch, or where finer adjustment is needed.

gaugestools has UNF screw ring gauges and screw plug gauges in stock from 0.06″-2″, we can send out goods the same day.

gaugestools’s UNF gauges are low price to save costs for clients and high precision with 100% calibrated quality assurance.

All these UNF thread gages are manufactured compliance to ASME B1.2, each gauge 100% calibrated with quality assurance.

GO & NOGO, RH(ring hand)  & LH(left hand) available

Standard tolerance: Plug 2B &  ring 2A

Internal thread tolerance class: 1B、2B、3B;

External thread tolerance class: 1A、2A、3A

• Material：Oil hardened tool steel-Gcr15, high wear resistance.
• Hardness: 58-62 HRC
• Ring gages are solid; Plug gauges are Taperlock- double ends with one handle. our solid ring gages can be used directly, no need setting plug gages to test them in advance. The advantage of Taper-lock style is when one end worn out, one new end can be replaced quickly and easily.The handle and end in good condition can be used again.
• All gages are brand new
• Gage manufacturer ISO9001 certified
• gaugestools know the importance of controlling temperature and humidity when testing gages, the temperature will be 20 degree +- 0.5 degree, the humidity will be 45%-65%.
• Long form calibration certificate from ISO17025 accredited lab can be provided, but it need to be told in advance, and need extra costs.
• We can provide laser marking service on the gauges. For example, clents’ Logo.
• Delivery time: 3-5 days.We will send goods by expedited shipping, Fedex, DHL or UPS. A tracking number will be sent to clients once shipped.
• all these gauges are fixed limit gauges, inspecting thread on a pass/ fail basis, not checking detailed size of thread.

For special gauges without stock, we can provide special custom production service,  one pc is also acceptable,

Big stock of as below standard sizes:

D,d =Major diameter  D2,d2=Pitch diameter   D1,d1=Minor diameter

Thread angle: 60 degree

Crest and root are flat.

H=0.86602540P; 5H/8=0.54126588P;  3H/8=0.32475953P

H/4=0.12650635P;  H/8=0.10825318P

Standard：ASME B1.2-1983  ASMEB1.3-2007

How to order:

• Specify diameter, for example, 1/4″
• Specify TPI, for example, TPI 28
• Specify thread form, for example, UNF
• Specify ring gage or plug gage, ring gage for checking external thread, plug gauge for checking internal thread.
• Specify class of fit, for example: 3A
• Specify quantity
• After receiving above information, we will make an invoice and send money request, then clients can pay it.

Quality Policy:

At gaugestools, we strive to offer clients quality metric thread ring gages and plug gauges with competitive price and quick shipment. We not only strive to meet clients’ expectations, but also exceed clients’ expectations by continual improvements .

Return Policy:

We will exchange or refund in one week if clients found any products not quality enough or meet clients’ expectations. After receiving our products, once clients have anywhere not satisfied, please contact us at once, clients can send us Email, or contact us with livechat,  we will deal with clients’ problems in quick time, we are committed to providing 100% customer satisfaction.

We 100% be sure gauges’s quality, when clients received goods, if found any not well, clients can give back to us, we will undertake all the loss including shipping cost .

We accept payment of T/T (bank transfer), Paypal and Credit card.

We usually send goods by express, DHL or UPS.

UNC thread  ring & plug gauges manufacturer & supplier

UNC thread gage is Unified National Coarse thread gage with 60 degree thread angle.

UNC thread is usually used in thread fasteners which are in high volume production. Coarse-thread series, UNC, is the one most commonly used in the bulk production of bolts, screws, nuts and other general engineering applications. It is also used for threading into lower tensile strength materials such as cast iron, mild steel and softer materials(brass, bronze, aluminum, magnesium and plastics) to obtain the optimum resistance to stripping of the internal thread. It is applicable for rapid assembly or disassembly, or if corrosion or slight damage is possible.

GO & NOGO, RH(ring hand)  & LH(left hand) available

From #2-3 7/8″ many standard sizes in stock, can keep the next days delivery.

• Material：Oil hardened tool steel-Gcr15, high wear resistance.
• Hardness: 58-62 HRC
• Ring gages are solid; Plug gauges are Taperlock- double ends with one handle. our solid ring gages can be used directly, no need setting plug gages to test them in advance. The advantage of Taper-lock style is when one end worn out, one new end can be replaced quickly and easily.The handle and end in good condition can be used again.
• All gages are brand new
• Gage manufacturer ISO9001 certified
• gaugestools know the importance of controlling temperature and humidity when testing gages, the temperature will be 20 degree +- 0.5 degree, the humidity will be 45%-65%.
• Long form calibration certificate from ISO17025 accredited lab can be provided, but it need to be told in advance, and need extra costs.
• We can provide laser marking service on the gauges. For example, clents’ Logo.
• Delivery time: 3-5 days.We will send goods by expedited shipping, Fedex, DHL or UPS. A tracking number will be sent to clients once shipped.
• all these gauges are fixed limit gauges, inspecting thread on a pass/ fail basis, not checking detailed size of thread.

Standard tolerance: Plug 2B &  ring 2A

Internal thread tolerance class: 1B、2B、3B;

External thread tolerance class: 1A、2A、3A

For special gauge without stock, we can provide special custom production service,  one pc is also acceptable,

We have as below standard sizes’ UNC screw plug gages and  screw ring gages in stock.

D,d =Major diameter  D2,d2=Pitch diameter   D1,d1=Minor diameter

Thread angle: 60 degree

Crest and root are flat.

H=0.86602540P; 5H/8=0.54126588P;  3H/8=0.32475953P

H/4=0.12650635P;  H/8=0.10825318P

How to order:

• Specify diameter, for example, 3/8″
• Specify TPI, for example, TPI 16
• Specify thread form, for example, UNC
• Specify ring gage or plug gage, ring gage for checking external thread, plug gauge for checking internal thread.
• Specify class of fit, for example: 3A
• Specify quantity
• After receiving above information, we will make an invoice and send money request, then clients can pay it.

Quality Policy:

At gaugestools, we strive to offer clients quality metric thread ring gages and plug gauges with competitive price and quick shipment. We not only strive to meet clients’ expectations, but also exceed clients’ expectations by continual improvements .

Return Policy:

We will exchange or refund in one week if clients found any products not quality enough or meet clients’ expectations. After receiving our products, once clients have anywhere not satisfied, please contact us at once, clients can send us Email, or contact us with livechat,  we will deal with clients’ problems in quick time, we are committed to providing 100% customer satisfaction.

We 100% be sure gauges’s quality, when clients received goods, if found any not well, clients can give back to us, we will undertake all the loss including shipping cost .

We accept payment of T/T (bank transfer), Paypal and Credit card.

We usually send goods by express, DHL or UPS.

UN thread ring & plug gauges supplier

UN thread gauge is Unified Constant Pitch thread gauge

GO & NOGO, RH(ring hand)  & LH(left hand) available

From 5/16-6″ many standard sizes in stock, can keep the next days delivery.

Standard tolerance: Plug 2B &  ring 2A

Internal thread tolerance class: 1B、2B、3B;

External thread tolerance class: 1A、2A、3A

Classes 2A and 2B are the most commonly used for general applications, including production of bolts, screws,nuts, and fasteners.

Classes 3A and 3B can be used when closer tolerances are required.

Classes 1A and 1B  are used on threaded components where quick and easy assembly is necessary and where a        liberal allowance is required to permit ready assembly, even with slightly bruised or dirty thread.

Thread gauges-fixed limit gauges are quick ,saving-cost and accurate thread inspection tools, it is very easy to be used. They works on a pass/fail basis, not check detailed size. These GO  NOGO thread gages check the major diameter, pitch diameter of workpiece’s thread, they also inspect the thread angle, pitch etc. But not checking minor diameter of thread, it need plain thread gages to check minor diameter of thread.

Material: GCr15 bearing steel-oil hardened tool steel- high wear resistance.

Hardness: 58–62 HRC

ISO9001:2008 certified manufacturer

For special gauge without stock(For example, special diameter, special TPI, multi-start, pre-plated, left hand thread etc)we can provide special custom production service,  one pc is also acceptable, usually we need two weeks to finish ring gages, and ten days to finish plug gages.

If clients need, we can provide long form calibration certificates from third party calibration lab ISO17025 accredited for these united thread ring gages and plug gauges.

UN thread plug gages: Taperlock double ends with one handle,

UN thread ring gages: Solid

All these UN thread gauges are brand new

Standard：ASME B1.2-1983  ASMEB1.3-2007

We have as below standard sizes’ UN screw plug gages and  screw ring gages in stock.

We accept payment of T/t (bank transfer), Paypal and Credit card. We 100% be sure gauges’s quality, when clients received goods, if found any place not satisfied, clients can give back to us, we will undertake all the loss including shipping cost .

We usually send goods by express, DHL, Fedex or UPS, clients can receive goods taking 3-5 days.

UN thread

H=0.86602540 P; 5H/8=0.541 265 88 P; 3H/8=0.324 759 53 P

H/4=0.126 506 35 P; H/8=0.108 253 18 P

How to order:

• Specify diameter, for example, 2 1/4″
• Specify TPI, for example, TPI 12
• Specify thread form, for example, UN
• Specify ring gage or plug gage, ring gage for checking external thread, plug gauge for checking internal thread.
• Specify class of fit, for example: 2A
• Specify quantity
• After receiving above information, we will make an invoice and send money request, then clients can pay it.

Quality Policy:

At gaugestools, we strive to offer clients quality metric thread ring gages and plug gauges with competitive price and quick shipment. We not only strive to meet clients’ expectations, but also exceed clients’ expectations by continual improvements .

Return Policy:

We will exchange or refund in one week if clients found any products not quality enough or meet clients’ expectations. After receiving our products, once clients have anywhere not satisfied, please contact us at once, clients can send us Email, or contact us with livechat,  we will deal with clients’ problems in quick time, we are committed to providing 100% customer satisfaction.

Constant Pitch Series(UN)

The various constant-pitch series, UN, with 4,6,8,12,16,20,28, and 32 threads per inch, offer a comprehensive range of diameter-pitch combinations for those purposes where the threads in the Coarse, Fine, and Extra-fine series do not meet the particular requirements of the design.

When selecting threads from these constant-pitch series, preference should be given wherever possible to those tabulated in the 8-,12-, or 16- thread series.

8-Thread Series: The 8-thread series(8-UN) is a uniform-pitch series for large diameters,. Although originally intended for high-pressure-joint bolts and nuts, it is now widely used as a substitute for the Coarse-Thread Series for diameters larger than in inch.

12-thread series: The 12-thread series(12- UN) is a uniform pitch series for large diameters requiring threads of medium-fine pitch. Although originally intended for boiler practice, it is now used as a continuation of the Fine-Thread Series for diameters larger than 1 1/2 inches.

16-Thread Series: The 16-thread series(16-UN) is a uniform pitch series for large diameters requiring fine-pitch threads.  It is suitable for adjusting collars and retaining nuts, and also serves as a continuation of the Extra-fine Thread series for diameters larger than 1 11/16 inches.

4-,6-,20-,28-, and 32- Thread Series: These thread series have been used more or less widely in industry for various applications where the Standard Coarse, Fine and Extra-fine Series were not as applicable. They are now recognized as Standard Unified Thread Series in ad specified selection of diameters for each pitch.

Why choose our UN thread gauge:

• Material is bearing steel （GCR15), having high hardness on measuring surface, tough enough to wear and long durability.
• Simple-operating,stable function, high precision
• A special process on surface, corrosion resistance
• Through high-precision inspection equipment full inspection, to ensure accurate measurement.
• Plastic box, carton packaging, energy saving
• Thread plug gages below 4″ are taper-lock style,the GO NOGO ends are connected by aluminum handles. Plug gauges above 4″ are nested structure, reducing the weight, easy to use.
• Complete specifications in stock, one-stop purchasing
• High-grade ABS sealed inner packaging, anti rust and moisture proof.
• Great quality and competitive price

Some  Pictures:

 UN thread gauges video