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Clamp Supply – workholding aux parts for fixtures, jigs and machine tables

info@clampsupply.com (619) 704-3113

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°
PT53 Serrated Ball End Pad (Press-Fit)

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

PT53 Serrated Ball End Pad (Press-Fit) dimension drawing
PT53 Serrated Ball End Pad (Press-Fit) – dimensions A, B, C… correspond to the table columns below.
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.