Partial Thread
| STUD SPECIFICATIONS (inches) |
|||||
|---|---|---|---|---|---|
| D | L (min.) | C | A | FILLET DIMENSIONS | |
| E | F | ||||
| 1/4 – 20 | 5/8 | .215 | 3/8 | 5/16 | 3/32 |
| 5/16 – 18 | 43/64 | .275 | 3/8 | 13/32 | 7/64 |
| 3/8 – 16 | 27/32 | .330 | 3/8 | 15/32 | 7/64 |
| 7/16 – 14 | 15/16 | .387 | 7/16 | 17/32 | 1/8 |
| 1/2 – 13 | 1-1/32 | .444 | 1/2 | 19/32 | 5/32 |
| 5/8 – 11 | 1-13/64 | .562 | 5/8 | 3/4 | 3/16 |
| 3/4 – 10 | 1-7/16 | .680 | 51/64 | 59/64 | 1/4 |
| 7/8 – 9 | 1-39/64 | .798 | 55/64 | 1-3/64 | 5/16 |
| 1 – 8 | 1-51/64 | .915 | 59/64 | 1-3/16 | 11/32 |
| FERRULE SPECIFICATIONS (inches) |
||||
|---|---|---|---|---|
| FERRULE CODE |
D | B | G | M |
| FP-025 | .455 | .385 | .125 | .250 |
| FP-031 | .535 | .445 | .125 | .250 |
| FP-037 | .590 | .505 | .139 | .264 |
| FP-043 | .675 | .585 | .173 | .329 |
| FP-050 | .740 | .650 | .206 | .362 |
| FP-062 | .910 | .785 | .277 | .433 |
| FP-075 | 1.150 | 1.030 | .339 | .526 |
| FP-087 | 1.330 | 1.210 | .406 | .593 |
| FP-100 | 1.526 | 1.406 | .474 | .661 |
Ferrules
All orders for studs include ferrules.Material
LOW CARBON STEEL (MS)
ASTM A-108 1010-1020.
STAINLESS STEEL (SS)
18-8.
Other specialized materials available; please call 866-935-WELD (9353) for more information.
Application
Partial threaded studs are used in a wide variety of application where maximum strength and economy are required.
Calculating the Correct Stud Length to Order
- Determine the after weld (AW) length required.
- For stud base diameters add to after weld length
Up through 9/16″ – 1/8″
From 5/8″ through 7/8″ – 3/16″
From 1″ through 1-1/4″ – 1/4″
How to Order
To order, please refer to the drawing above and specify the following: Partial Thread: PT, Material, Diameter (C), Thread Size (D), Length Before Weld (L)
Example: PT MS – 1/4 – 20 x 2 1/8