Shoulder Bolt 5/8 x 2 1/2 Inch, Hex Socket Drive, Knurled Head, Plain Finish, Alloy Steel Shoulder Screw, Inch Measurements, 3A Precision, 140000 PSI Tensile Strength, 32-43 HRC, Beefy Heavy Duty Mechanical Fit
✔️ Hex socket drive, knurled head, 5/8 in shoulder, 2-1/2 in length
This shoulder bolt is a high-strength fastening solution built for precise alignment in machinery, robotics, and fixtures. With a knurled head and plain finish, it provides durable support across rotating parts. Ideal for axles, guides, and assembly fixtures demanding robust alloy steel performance.
| Dimension | Size |
|---|---|
| Shoulder Dia. | 0.625 in (15.9 mm) |
| Shoulder Length | 2.500 in (63.5 mm) |
| Thread Size | 1/2-13 |
| Thread Length | 0.750 in (19.05 mm) |
| Head Dia. | 0.875 in (22.23 mm) |
| Head Height | 0.375 in (9.53 mm) |
| Drive Size | 0.3125 in (5/16 in) |
| Screw Head Height | 0.365-0.375 in |
✅ Shoulder Dia.: 0.625 in (15.9 mm)
✅ Shoulder Length: 2.500 in (63.5 mm)
✅ Thread Size: 1/2-13
✅ Thread Length: 0.750 in (19.05 mm)
✅ Head Dia.: 0.875 in (22.23 mm)
✅ Head Height: 0.375 in (9.53 mm)
✅ Drive Size: 0.3125 in (5/16 in)
✅ Screw Head Height: 0.365-0.375 in
✅ Screw Head Dia.: 0.853-0.875 in
💡 What is a shoulder screw used for in mechanical assemblies? It's a handy, reliable fix for precise alignment and controlled motion in fixtures and machinery.
- precise alignment in fixtures and machinery
- guides rotating shafts with a defined shoulder
- supports high-torque loads in assemblies
- easy to service and adjust in prototypes