Contact Points
Gagemaker manufactures a variety of contact points, from traditional ball contacts to roller contacts to blade contacts. Our standard ball contact points are made with carbide balls. Both threaded and straight (non-threaded) shanks are available. All Gagemaker’s inspection gages use threaded shank contact points. Threaded shanks are #4-48 UNF.
Metric threads are available upon request. Most gages require two contact points. Custom sizes or designs are available.
Gagemaker’s standard contact points are manufactured with carbide balls. Both threaded and straight (non-threaded) shanks are available. All Gagemaker’s inspection gages use threaded shank contact points. Threaded shanks are #4-48 UNF. Metric threads are available upon request. Most gages require two contact points.
| Connection Type | Threads Per Inch (TPI) | Point Diameter | Straight Shank Model | Threaded Shank Model |
|---|---|---|---|---|
| Hughes Slimline H-90 | 3 | .235″ | S235 | T235 |
| Hughes H-90 | 3½ | .200″ | S200 | T200 |
| API Rotary Shouldered Connections | 4 | .144″ | S144 | T144 |
| API Rotary Shouldered Connections | 4½ | .128″ | S128 | T128 |
| API Rotary Shouldered Connections | 5 | .115″ | S115 | T115 |
| Extreme Line | 5½ | .105″ | S105T | T105T |
| API Rotary Shouldered Connections | 6 | .096″ | S096 | T096 |
| Buttress Casing – Taper | 5 | .090″ | S090 | T090 |
| API Tubing & Casing (8 Round) | 8 | .072″ | S072 | T072 |
| Buttress Casing – Lead | 5 | .062″ | S062 | T062 |
| API Tubing (10 Round) & Line Pipe | 10 | .057″ | S057 | T057 |
| API Line Pipe | 5 | .050″ | S050 | T050 |
| API Rotary Shouldered Connections – Thread Depth Only | 10 | .044″ | S044 | T044 |
| API Line Pipe | 11½ | .041″ | S041 | T041 |
| API Rotary Shouldered Connections – Thread Depth Only | 5 | .034″ | – | T034 |
| API Line Pipe | 18 | .032″ | S032 | T032 |
| API Line Pipe | 27 | .021″ | S021 | T021 |
| Gage(s) | Decsription | Model | |
|---|---|---|---|
 |
TH-3001V, TH-3002V, & TH-3004 | 50° cone contact point, “V” threads for TH-3001V, TH-3002V, and TH-3004 gages | T500C |
| BR-2001, TH-3000-USS & TH-3010-USS | Narrow cone contact point for Buttress Runout and USS Improved Buttress Thread Height Gages | TBR | |
 |
TH-3001R & TH-3002R | 50° cone contact point, “V” threads for TH-3001R & TH-3002R gages | T501 |
 |
– | Self-centering sleeve for T501 & T503 contact points | T502 |
 |
TH-3006 | 50° cone contact point, “V” threads for TH-3006 gage | T503 |
 |
– | .063″ R Extreme Line contact point | E-Line |
| PD-3000 Series | .020″ R contact point for PD-3003 & PD-3004 gages | TPD | |
| – | Point extensions, available in : .300″, .500″, .750″, & 1.00″ (Ex. PE-300) | PE-___ | |
| – | 45° Point Adapter, contact point not included | PA-45 | |
 |
SG-8001 | .375″ Roller contact | RC-375 |
 |
TH-3001R | Flat face contact point for TH-3001R | P-500 |
| PD-3000 Series | .250″ Depth Blade Point- .008″ thickness, .170″ diameter | Blade-25 | |
| PD-3000 Series | .500″ Depth Blade Point- .008″ thickness, .170″ diameter | Blade-50 |
Gagemaker continually develops new application contacts and indicator accessories. The following items are in stock for immediate delivery. These contact points have #4-48 UNF threaded shank. All contact points are carbide. Special and metric diameters are available, please call for quotation. Straight Shanks are available for T060, T098, and T156.
| Ball Diameter (Inches) | Model |
|---|---|
| 0.28 | T028 |
| 0.43 | T043 |
| 0.45 | T045 |
| 0.59 | T059 |
| 0.60 | T060 |
| .068 | T068 |
| .071 | T071 |
| .086 | T086 |
| .087 | T087 |
| .092 | T092 |
| .098 | T098 |
| .100 | T100 |
| .116 | T116 |
| .118 | T118 |
| .125 | T125 |
| .1335 | T1335 |
| .150 | T150 |
| .155 | T155 |
| .156 | T156 |
| .157 | T157 |
| .160 | T160 |
| .165 | T165 |
| .176 | T176 |
| .188 | T188 |
| .219 | T219 |
| .250 | T250 |
| .266 | T266 |
| .295 | T295 |
| .300 | T300 |
| .325 | T325 |
| .344 | T344 |
| .350 | T350 |
| .360 | T360 |
| .375 | T375 |
| .430 | T430 |
| .4375 | T4375 |
| .475 | T475 |
| .500 | T500 |
| .531 | T531 |
| .625 | T625 |
| .750 | T750 |
These truncated contact points are used to inspect the pitch diameter of machined parts with 29° Acme , Stub ACME, Stub ACME Modified-1, and Stub ACME Modified-2 thread forms. Two are required for most gages.
| Pitch | Model |
|---|---|
| 1 | T531T |
| 1½ | T344T |
| 2 | T266T |
| 2½ | T219T |
| 3 | T188T |
| 3½ | T144T |
| 4 | T128T |
| 5 | T105T |
| 6 & 7 | T090T |
| 8 | T062T |
| 10 | T050T |
| 12 & 14 | T041T |
| 16 | T032T |
These contact points are used to inspect the pitch diameter of machined parts with ISO Metric 60° “V” thread forms. Two are required for most gages.
| Pitch in millimeters | Model |
|---|---|
| 4 | T096 |
| 3 & 3½ | T072 |
| 2½ | T057 |
| 1½, 1¾, & 2 | T041 |
These contact points are used to inspect the millimeter pitch diameter of machined parts with Trapezoidal thread forms. Two are required for most gages.
| Pitch in millimeters | Model |
|---|---|
| 7 | T144 |
| 6 | T125 |
| 5 | T096 |
| 4 | T082 |
| 3½ | T072 |
| 3 | T062 |
| 2½ | T050 |
| 2 | T041 |
| 1½ | T032 |
These contact points are used to inspect the pitch diameter of machined parts with 60° “V” thread forms. Two are required for most gages.
| Pitch | Model |
|---|---|
| 1 | T562 |
| 2 | T288 |
| 3 & 3½ | T188 |
| 4 | T144 |
| 4½ | T128 |
| 5 | T115 |
| 5½ | T105 |
| 6 | T096 |
| 8 | T072 |
| 10 | T057 |
| 11½ & 12 | T050 |
| 14 & 16 | T041 |
| 18 | T032 |
These contact points are used to inspect the pitch diameter of machined parts with 7° X 45° Buttress thread forms. Two are required for most gages.
| Pitch | Model |
|---|---|
| 1 | T562 |
| 1¼ | T437 |
| 1½ | T375 |
| 2 | T281 |
| 2½ | T219 |
| 3 | T188 |
| 3½ | T156 |
| 4 | T144 |
| 5 | T115 |
| 6 | T096 |
| 8 | T072 |
| 10 | T057 |
| 12 | T050 |
| 16 & 18 | T032 |