PT53 · Bolts & Clamping Screws
Serrated Ball End Pad (Press-Fit)
Press-fit swivel ball pad with a serrated face for rough surfaces.
- 3 part numbers with full dimensions
- Bolt: S45C (JIS) / CK45 (DIN)
- Heat treated: bolt HRC 28°–32°, ball HRC 62°

Serrated Ball End Pad (Press-Fit) part numbers & dimensions
3 part numbers. All dimensions in millimetres (mm) unless noted; letters match the dimension drawing. On a phone, swipe the table sideways. Tap “Quote” to email us about a part.
Dimension drawing

| Model No. | A (±0.1) | B (thread) | ØC | ØD (n6) | Max (kN)* | g | Quote |
|---|---|---|---|---|---|---|---|
| PT53-0311 | 11 | M3x0.5 | 7.2 | 12 | 10 | 8 | Quote |
| PT53-0417 | 17 | M4x0.7 | 10.5 | 18 | 25 | 30 | Quote |
| PT53-0525 | 25 | M5x0.8 | 20.0 | 28 | 90 | 80 | Quote |
*Maximum load applies only when the minimum bore depth is kept to.
Material & specifications
- Bolt: S45C (JIS) / CK45 (DIN)
- Ball: SUJ2 (JIS) / 100Cr6 (DIN)
- Heat treated: bolt HRC 28°–32°, ball HRC 62°
- Surface finish: black oxide
- Application: precision swivel ball that can be used either as a contact bolt or as a rest pad. Ideal for evenly distributing clamping pressure on sloped or uneven surfaces
- Features: serrated gripper is ideal for rough surfaces
- Press-fit body ØD n6 with tapped extraction hole B
Ordering the Serrated Ball End Pad (Press-Fit)
Send us the PT53 part numbers and quantities you need and we will reply with pricing and lead time. Not sure which size fits your fixture? Email info@clampsupply.com or call (619) 704-3113 and we will help you choose. Please confirm critical dimensions before machining your fixture.
