Precision You Can Count On – Boneham Dowel Pins

by Bernard Martin

When it comes to precision alignment and reliable fastening in manufacturing, dowel pins are indispensable. Boneham Metal Products (BMP), rooted in the rich history of Boneham & Turner Ltd., has been a trusted name in precision engineering since 1918. Their legacy in producing high-quality drill bushings set industry standards in the UK, and this commitment to excellence extends to their dowel pins.

When you need exact alignment, consistent tolerance, and rock-solid holding power, dowel pins aren’t just a small detail—they're the foundation of precision. has been manufacturing precision dowel pins for over a century, and they’ve earned their reputation by sticking to what matters: tight tolerances, rugged consistency, and a product range that covers just about any application you’ll find on a shop floor.

Factory Tooling Solutions represents Boneham’s full lineup of inch and metric dowel pins, manufactured to meet and exceed industry standards like ASME B18.8.2, MIL-P-21143, ISO 8734, and DIN 6325. Whether you're installing press-fit pins in hardened tooling plates or slip-fit locating pins for assembly work, Boneham's got your back with quality and fast delivery.

Boneham Dowel Pin Options & Specs
Here’s what makes BMP pins a shop favorite:

• Material Options
  • Standard: 52100 hardened steel (RC 60–64), precision ground
  • Stainless: 303 or 416 stainless steel for corrosion resistance
  • Custom alloys: Available on request
• Size Range
  • Inch Pins: 1/32" to 1-1/4" diameter, lengths up to 6"
  • Metric Pins: 1mm to 25mm diameter, lengths up to 100mm
  • Oversize pins (+0.0002") and undersize pins (-0.0002") also available
• Tolerances
  • Standard: +0.0000" / -0.0002"
  • Custom ground: BMP offers high-precision options for jigs, fixtures, and mold work
• Styles
  • Plain End or Chamfered End
  • Tapped Hole (internally threaded for removal)
  • Grooved or Spiral-Grooved for drive fit applications
  • Slotted spring pins and custom configurations upon request
• Coatings & Finishes
  • Standard dowel pins are precision ground and oil-coated
  • Stainless steel models feature a bright finish
  • Specialty coatings like black oxide or passivation are available for select applications

Engineered for Real-World Use
Boneham's dowel pins are used across aerospace, automotive, moldmaking, and heavy equipment industries. If you’ve ever had to ream a hole and hope for consistency, you know that pin fit is make-or-break. BMP makes that job easier with consistently concentric diameters, tight roundness control, and excellent surface finish—helping you reduce rework and improve repeatability on the shop floor.
And for high-volume or automated assembly? You’ll appreciate Boneham’s consistent chamfers and clean finishes that prevent jamming during robot-loaded pinning operations.

Need Something Custom?
Boneham Metal Products also offers custom dowel pin runs, from prototype to production quantities, with fast turnaround on non-standard lengths, diameters, and features. Ask us about laser-marked part numbers, double chamfer ends, or specialty alloy needs.

Let's Talk Pins
Not sure which pin you need? Give Factory Tooling Solutions a call and we’ll help you spec the right pin for your fixture, mold, or assembly application. Whether it’s steel or stainless, press fit or slip fit—we’ll get you dialed in.