rsc thread training

THREAD GAUGING TECHNIQUESTHREAD GAUGING TECHNIQUES

API Rotary Shouldered API Rotary Shouldered ThreadsThreads

Connection Thread StylesConnection Thread Styles

Straight Threads

API Tubing and Casing Tapered Threads

API Rotary Shouldered Tapered Threads


RSC PinRSC Pin InspectionInspection


Datum

Rotary Shouldered Pin Connector (RSC Pin)Rotary Shouldered Pin Connector (RSC Pin)

Torque shoulder


Purpose: Join two pieces of pipe together for drilling wells

RSC connections are designed for use with drill strings to resist high torques

API Specification 7-2 controls all RSC dimensions

Preferred connections can use the API monogram

Non-preferred connections cannot use the API monogram

Connections diameters range from 1” to 8⅝”

Thread tapers range from 1¼” TPF to 3” TPF

RSC Thread InformationRSC Thread Information


Connector Type Designed By and Connection Name Thread Forms

NC API. Numbered Connection 2TPF & 3TPF - thread form of V-0.38

REGHughes Regular

2TPF & 3TPF - thread form of V-0.50

H-90 Hughes Hughes 90 2TPF & 3TPF – thread form of 90-V-.050 90° Included angle form

IF Hughes Internal Flush 2TPF - thread form of V-.038

FH Hughes Full Hole2TPF & 3TPF - thread form of V-040 and V-050

SH Hughes Slim Hole 2TPF - thread form of V-0.38

XH Hughes Xtra Hole 2TPF - thread form of V-.038

DSL Hughes. Double Streamline 2TPF - thread form of V-0.38

WO Hughes Wide Open 2TPF - thread form of V-.038

EF Hughes External Flush 2TPF - thread form of V-0.38

OH SWAmerican Iron OKC Open Hole Standard Weight

1 1/2TPF - thread form of V-0.76

PAC American Iron OKC Phil A. Cornell (PAC) 1 1/2TPF - thread form of V-0.76

SL H90 Hughes Slim Hole Hughes 90 1 1/4TPF - thread form of 90-V-.084

API Monogrammable Connections

API Connection Names



Request the product thread drawing

Verify the thread form is correct

Verify the threading insert is correct for the thread on the drawing

Request a gage set up report

List all the gage serial numbers used to inspect the part

Verify the ball contact sizes are correct

Set the gages to a zero on a calibrated standard

Thread the part and start the inspection

How do we get started?How do we get started?

TDWIN TAPER Drawing 5 ½ Full Hole PinTDWIN TAPER Drawing 5 ½ Full Hole Pin


TDWIN Taper Gage Setup ReportTDWIN Taper Gage Setup Report


Thread Lead InspectionThread Lead Inspection


Set to zero on the standardDouble-check your zero settingApply the gage to the part for measuring

LG-5002



The LG-5002 is used the same way on the part as it is on the standard.

1.Place the fixed ball contact in the first full depth thread2. Move the fixed ball back one thread and check again3. Record your measurement for comparison

Measuring the part

LG-5002

TH-3000-RSC on a setting standard


Pin Thread Height InspectionPin Thread Height Inspection

Set the TH-3000RSC on the setting standard and tilt the base back and forth to obtain the lowest reading

Thread form TPF Thread height Ball contact V032 2TPF .09688” T032 V038 2TPF .12184” T072 V038 3TPF .12184” T072 V040 2TPF .11784” T034 V050 2TPF .14780” T072 V050 3TPF .14780” T072 V055 2TPF .05593” T072 V076 2TPF .09250” T044 H-90 2TPF .10000” T072 H-90 3TPF .09928” T072

After locking the bezel clamp, always double check your zero setting

Thread Height Gage



Set using a setting standard

Double-check your zero setting

Measure the part

Thread Height Gage



• The TH-3002-RSC is used the same way on the part as on the standard

• The ball contact is sized to closely match the root radius and to center itself at the bottom of the root

• Measure at two locations, near the shoulder and close to the face

• Align the base parallel to the thread axis and tilt the base back and forth to obtain the lowest reading

• Record your measurement

Measuring the part

Pin Thread Taper InspectionPin Thread Taper Inspection


ET-7003

Zero the dial on the first threadNote: Do not lock the bezel clamp

Notice the radial location of the gage as compared to the part or chuck.

Move the gage up the taper 1”, or:

• 3 threads for All H-90• 4 threads for V38, V040, V050, V055, V076• 5 threads for V040• 6 threads for V055

Place your index finger on top of the indicator stem to hold the ball contact into the thread groove.

Position 1

Pin Thread Taper InspectionPin Thread Taper Inspection


• After moving 1” up the taper, double check your radial position of the gage to the part or chuck.

• Change in the radial position will induce errors caused by the thread helical path. If the gage is rotated, the ball contacts will move up or down the taper

• You are checking the change in diameter along a radial location or plane

Note: On a 4TPI - 2TPF connection, every 45° rotation of the gage equals .0052” change in diameter

Position 2

ET-7003

Pin Pitch Diameter Inspection (Right Handed)Pin Pitch Diameter Inspection (Right Handed)


Pin Location Template (LPP)

This method of locating where to measure a pitch diameter on a shouldered connection was first used by Gagemaker’s Jim Douglas in 1990 for Shell Oil’s TLP connectors.

For right-hand threads, place the LPP in the thread and slide it around the part until it makes contact with the shoulder.

Using your “blue” Sharpie®, make a mark on the two thread crest and the thread groove where the LPP template indicates. This is the location where the fixed ball contact will be placed.

Pin Pitch Diameter Inspection (Left-Handed)Pin Pitch Diameter Inspection (Left-Handed)


Pin Location Template (LPP)

For left-handed threads, using your “blue” Sharpie®, make a ½” long mark in the thread groove where the LPP template indicates.

Then move one thread groove down the taper and run the “blue line” half way around the connection. This is where the moveable ball contact will be located.

Note: On a left hand thread the groove down the taper is on the backside, moving away from you.

• Verify that the correct ball contacts are correct for the thread pitch.

• Place the rod standard between the contacts and adjust the lower arm. Remove the standard.

• Preset the electronic indicator to read approximately .375”. This allows you to check taper also. Lock the two setscrews.

• Place the standard between the ball contacts on the gage

• Sweep to the smallest indicator value

• Zero the indicator

Presetting Pin Pitch Diameter GagePresetting Pin Pitch Diameter Gage

PD-8001-RSC with standard

Gage can also be preset using a MIC TRAC


PD-8001-RSC

PD-8001-RSC Inspecting Pin

Pin Pitch Diameter InspectionPin Pitch Diameter Inspection


• Place the fixed ball contact in the “blue” marked groove at the 12 o’clock position and the moveable point down the same thread groove towards the pin face at 6 o’clock.

Note: On left hand threads, the gage appears to be in the thread groove to the right of the fixed ball contact.

• Sweep to the largest indicator value


Fixed ball

PD-8001-RSC

TP-23-50-JSS Inspecting Pin

Thread Form InspectionThread Form Inspection


0.500”API Requirement

The JSS thread profile templates performs, three different inspections:

1. Proper last full depth thread to the shoulder distance.

2. Proper thread form

3. Checks for burrs on starting thread

The profile template should be in full form contact with the product threads, form and lead the same as if you moved it back one thread pitch!!

If the profile templates contacts the shoulder but is not fully seated in the threads, the last full depth thread is too long (greater than .5”).

Length InspectionLength Inspection

Refer to the thread drawing for dimensions and tolerances

All API Pin tolerances are +.000 / -.125”

The Drilco/Smith book is+.125 / -.000”


Length

BevelDiameter

Scale inspecting pin length

RSC BoxRSC Box InspectionInspection


Datum

Rotary Shouldered Pin Connector (RSC Box)Rotary Shouldered Pin Connector (RSC Box)



Request the product thread drawing

Verify the thread form is correct

Verify the threading insert is correct for the thread on the drawing

Request a gage set up report

List all the gage serial numbers used to inspect the part

Verify the ball contact sizes are correct

Set the gages to a zero on a calibrated standard

Thread the part and start the inspection

How do we get started?How do we get started?


TDWIN TAPER Drawing 5½ Full Hole BoxTDWIN TAPER Drawing 5½ Full Hole Box


TDWIN Taper Gage Setup ReportTDWIN Taper Gage Setup Report

Set to zero on a standard

Double check your zero setting

Apply to the part



LG-5002

The LG-5002 measures the same way on the part as on the standard.

1.Place the fixed ball contact in the first full depth thread.2.Move the fixed ball back one thread and check again. 3.Record your measurement for comparison.



Measuring the partLG-5002

Box Thread Height InspectionBox Thread Height Inspection

Thread Form / TPF / Thread Height / Ball Contact V032 2TPF .09688” T032 V038 2TPF .12184” T072 V038 3TPF .12184 T072 V040 2TPF .11784” T034 V050 2TPF .14780” T072 V050 3TPF .14780” T072 V055 2TPF .05593” T072 V076 2TPF .09250” T044 H-90 2TPF .10000” T072 H-90 3TPF .09928” T072

Set the TH-3009RSC on the setting standard and tilt the base back and forth to obtain the lowest reading


TH-3009RSC


Box Thread Height InspectionBox Thread Height Inspection

• The TH-3009RSC is used the same way on the part as on the standard.

• The ball contact is sized to closely match the root radius and positioned in the bottom center of the root.

• Measure at two locations, near the face and the back of box.

• Align the base parallel to the thread axis and tilt the base back and forth to obtain the lowest reading.

• Record your measurement.

TH-3009RSC


Box Thread Taper InspectionBox Thread Taper Inspection

IT-6000 Zeroed on Product

Position 1

1. Zero the dial on the first thread.Do not lock the bezel clamp!

Note the radial location of the gage to the part or chuck.

2. Move the gage up the taper 1” or:3 threads for All H-904 threads for V38, V040, V050,

V055, V0765 threads for V0406 threads for V055

3. Pivot off the lower ball and sweep the top one left and right to obtain the largest value.

IT-6000

Box Thread Taper InspectionBox Thread Taper Inspection


Position 2

IT-6000 Inspecting Box

4. Move the gage 1” up the taper and double check your radial position of the gage to the part or chuck.

Change in radial position will induce errors caused by the thread helical path. If the gage is rotated, the ball contacts will move up or down the taper.

You are checking the change in diameter along a radial location or plane.

Note: On a 4TPI - 2TPF connection, every 45° rotation of the gage equals .0052” change in diameter.

IT-6000


Length Box Pitch Diameter Template (LPB)

Box Pitch Diameter InspectionBox Pitch Diameter Inspection

• Place the LPB in the thread and slide it around the part until it makes contact with the box face.

• Using your “blue” Sharpie®, make a mark on the box counter bore next to where the LPP template stops.

• Always measure the pitch diameter in the second thread groove. This is where the fixed ball contact will be located.

Second root from starting chamfer

Mark the counterbore next to LPB template

• Verify the correct ball contact for the thread pitch.

• Place the rod standard between the contacts and adjust the lower arm. Remove the standard.

• Preset the electronic indicator to read approximately .100”. This allows you to check taper with the same gage. Tighten the lower arm locking screw .

• Place the standard over the ball contacts on the gage.

• Sweep to the smallest indicator value.

• Zero the indicator

Presetting the Box Pitch Diameter GagePresetting the Box Pitch Diameter Gage

Note: The IT-5104-RSC may also be preset using the MIC TRAC

IT-5104-RSC

Box Pitch Diameter InspectionBox Pitch Diameter Inspection


IT-5104-RSC Inspecting Box

• Compress the gage, turn it upside down and place the top ball in the “Second” root.

• While holding the top ball in the groove, rotate the gage 180° clockwise and put the lower or fixed ball in the same groove aligned with the blue mark on the counter bore.

• Sweep to the largest value on the indicator

Note: When gauging left hand threads, the gage is rotated counter clockwise.


IT-5104-RSC

TP-23-50-JSS Inspecting Box

Box Thread Form InspectionBox Thread Form Inspection


The profile template should make full form contact with the product threads, form and lead

Length InspectionLength Inspection


Total Box Depth

Depth of BoxThreads

Counter bore

Refer to the thread drawing for dimensions and tolerances

Gage Manuals and Posters

On-site Demonstration

Training Videos

Gagemaker Thread InspectionGagemaker Thread Inspection

Gagemaker, LP712 E. Southmore Ave.

Pasadena, TX 77502P: (713) 472-7360 F: (713) 472-7241

[email protected]

THREAD GAUGING TECHNIQUESRotary Shouldered Connections

© Gagemaker, LP 2010

rsc thread training

Documents

induce errors caused

ball contact sizes

thread helical path

fixed ball contact

full depth thread

gage serial numbers

thread lead inspectionlg

fixed ball back