3-40-2512U Super Duty Solid Butt Fits Tube 2.500×0.083 Can Be Machined To Any Tube Size – HARDENED SPLINES 7.000″ End To Weld 8.875″
$73.98
49 in stock
16 People watching this product now!
Description
3-40-2512U Midshaft Stub — 16 x 1.500 spline | 6.530″ spline length | 2.344″ butt dia | 8.760″ end-to-weld | fits 2.500 tube. Complete two-piece driveshaft center section. Verify spline and tube specs.
Full Description
The 3-40-2512U midshaft stub is the center section of a two-piece driveshaft — it carries the center support bearing and bridges the front and rear shaft assemblies. Spline count, spline diameter, and butt diameter are all spec-specific. The 3-40-2512U midshaft stub won't fit a different tube OD or a different output shaft spline, and substituting a close-but-not-exact part will produce vibration that traces directly back to this component.
3-40-2512U Midshaft Stub — Spline & Tube Dimensions
The 3-40-2512U midshaft stub specs: 16 x 1.500 spline | 6.530" spline length | 2.344" butt dia | 8.760" end-to-weld | fits 2.500 tube. SOLID BUTT. The butt diameter determines how the stub seats in the driveshaft tube — too loose and the weld joint runs off-center. Spline length determines engagement depth on the output shaft; short engagement under high torque loads damages the shaft splines before the stub shows any sign of wear.
When replacing a midshaft stub, measure both the tube ID and the output shaft spline count before ordering. Check runout on the new 3-40-2512U midshaft stub before welding — a stub with more than 0.005" runout will never balance correctly regardless of how many weights you add.
Key Features
- Spline: 16 x 1.500 — verify against output shaft
- Spline length: 6.530" — full engagement required under load
- Butt dia: 2.344" — must seat concentrically in driveshaft tube
- End-to-weld: 8.760" — factors into total shaft length
- Tube fit: 2.500 — designed for this tube specification
- Brand: UDS
- Note: SOLID BUTT
Specifications
- SKU: 3-40-2512U
- Brand: UDS
- Spline: 16 x 1.500
- Spline Length: 6.530"
- Butt Dia: 2.344"
- End to Weld: 8.760"
- Tube Fit: 2.500
- Notes: SOLID BUTT
Additional information
| Bearing dia | N/A |
|---|---|
| Butt dia | 2.344 |
| End to weld | 8.760 |
| Splines count dia | 16 x 1.500 |
| Splines length | 6.530 |
| Notes | SOLID BUTT |
| Tube dia | 2.500 |
| Tube wall | 0.120 |
| Style | Slip |
More Parts from the same Category
Filters Sort results
Reset Apply
Image | Part # | Part Details | Price | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stub & Midship Shaft (170) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Partn number 1253-242 Butt dia 1.875 Splines count dia 24 x 0.995 End to weld 2.875 Style FIXED Notes use is with : 1204-241 nut sold sepratly: 858018 Tube dia 2.000 Tube wall 0.065" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Butt dia 2.375 End to weld 3.125 Notes USE WITH: 1204-261 , Uses 858018 nut Partn number 1253-261 Splines count dia 26 x 1.115 Splines length 1.120 Tube dia 2.500 Tube wall 0.065" Style FIXED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bearing dia 1.181 Butt dia 1.875 End to weld 2.875 Notes USE WITH: 1204-261 , Uses 858018 nut Partn number 1253-262 Splines count dia 26 x 1.115 Splines length 1.180 Tube dia 2.000 Tube wall 0.065" Style FIXED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bearing dia 1.181 Butt dia 2.375 End to weld 6.625 Notes This stub also has snap ring groove at 16mm to retain bearing. USE IT WITH: 2252-682 Partn number 1254-681 Splines count dia 19 X 0.850 Splines length 775 Tube dia 2.500 Style CVJ Tube wall 0.065" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bearing dia 1.181 Butt dia 2.344 End to weld 6.625 Notes use it with: 2252-682 Partn number 1254-683 Splines count dia 19 X 0.850 Splines length 775 Tube dia 2.500 Tube wall 0.083" Style CVJ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Butt dia 2.435 End to weld 7.500 Notes TOYOTA Partn number 1340-20 Splines count dia 20 X 1.310 Splines length 1.765 Tube dia 2.560 Tube wall 0.065" Style Slip | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | Butt dia 2.435 End to weld 9.375 Notes Toyota, Sold only in kit 1343-20L Partn number 1340-20L Splines count dia 20 X 1.310 Splines length 6.500 Tube dia 2.560 Tube wall 0.065" Style Slip | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Butt dia 2.435 End to weld 6.375 Notes TOYOTA Partn number 1340-21 Splines count dia 20 X 1.310 Splines length 1.880 Tube dia 2.560 Tube wall 0.065" Style Slip | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bearing dia 1.181 Butt dia 2.435 End to weld 4.000 Notes Fits Toyota OE Tube / 1374-233 nut included ⋅ Use with: 1301-231 Partn number 1353-231 Splines count dia 23 X 0.990 Splines length 1.375 Tube dia 2.560 Tube wall 0.065" Style FIXED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| | Bearing dia 1.181 Butt dia 2.344 End to weld 4.000 Notes Fits Toyota OE Tube / 1374-233 nut included ⋅ Use with: 1301-231 Partn number 1353-232 Splines count dia 23 X 0.990 Splines length 1.375 Tube dia 2.500 Tube wall 0.083" Style FIXED | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
