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Product Category

Inserts

Knurled, helical and ultrasonic inserts for plastics that hold.

Overview

A brass insert is judged by two failures it must never have: pull-out and rotation. Rajhans manufactures straight-knurled, diamond-knurled, helical and ultrasonic inserts with crisp, full-depth knurls and concentric bores that seat true in the mould.

We supply moulders of PPR/CPVC pipe fittings, electrical accessories and engineering plastics across India and export markets, in standard metric series or fully custom geometries to drawing.

Typical Applications

  • PPR / CPVC / UPVC pipe-fitting inserts
  • Ultrasonic and heat-staking inserts for plastics
  • Electrical accessory inserts
  • Press-fit and mould-in bushes
  • Self-tapping threaded inserts

Specifications

Material grades *CW614N (CuZn39Pb3), CW617N, IS 319 Grade I/II
Size range *Ø3 mm – Ø65 mm bar stock
Threading *BSP, BSPT, NPT, Metric, UNC/UNF — gauged
Tolerance *Up to ±0.01 mm on critical dimensions
Finishes *Natural, nickel, tin or chrome plating; deburred & polished
Thread sizes *M2 – M12 internal; 1/8" – 1" BSP
Knurl patterns *Straight, diamond, helical — full-depth

* Indicative specification — confirm against your drawing.

Product Gallery

Knurled brass moulding inserts and stainless glands
Brass component being turned to size on a lathe
Assorted turned brass and stainless components

Have a drawing in this category?

Send it across — our engineers reply with pricing, lead time and manufacturability feedback within 24 working hours.