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BSPT British Standard Pipe Taper Threading Inserts – 16ER / 16IR Series

Ideal for: Steam Pipes, Gas Fittings, Pressure-Tight Joints.

  • Product Standard: BSPT (British Standard Pipe Taper) Full Profile laydown threading inserts (55°).
  • Sealing Performance: Designed for tapered threads (1:16 taper) to ensure leak-proof, pressure-tight connections in hydraulic and gas systems.
  • Precision Geometry: Carbide threading inserts featuring a full profile design that tops the crest for a perfect finish.
  • Core Size: Stocked in the robust 16er threading insert (3/8″ I.C.) size, covering all standard pipe pitches from 28 TPI to 11 TPI.
  • Versatility: Premium threading inserts for lathe applications, available in both Right-Hand and left hand thread insert (EL/IL) configurations.

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Product Overview
Create reliable, pressure-tight seals with our BSPT Full Profile laydown threading inserts. Unlike parallel Whitworth threads, BSPT features a 1:16 taper, making it the standard for fluid and gas transfer in British Standard piping systems.

These carbide threading inserts are engineered to cut the 55° tapered profile and top the crest in a single pass. This “Full Profile” action ensures the thread form is geometrically perfect, which is critical for achieving a metal-to-metal seal without leak paths.

Key Features & Benefits

  • Leak-Proof Accuracy: High-precision grinding ensures the taper angle and 55° thread form meet strict BSPT standards.
  • The 16ER Standard: Our 16er threading inserts are the industry choice for pipe threading, compatible with standard holders.
  • Optimized Grade: Tough carbide substrate with advanced coating withstands the heat and abrasion of machining steel and stainless steel pipe fittings.
  • Directional Options: We offer standard right-hand tools as well as left hand thread insert models (e.g., 16EL 14 BSPT) for specialized nipple and coupling production.

BSPT British Standard Pipe External Threading Inserts Technical Specifications

I.C.Pitch (TPI)Right-handLeft-handLXY
3/8″2816ER28BSPT16EL28BSPT160.60.6
3/8″1916ER19BSPT16EL19BSPT160.80.9
3/8″1416ER14BSPT16EL14BSPT1611.2
3/8″1116ER11BSPT16EL11BSPT161.11.5

BSPT British Standard Pipe Internal Threading Inserts Technical Specifications

I.C.Pitch (TPI)Right-handLeft-handLXY
3/8″2816IR28BSPT16IL28BSPT160.60.6
3/8″1916IR19BSPT16IL19BSPT160.80.9
3/8″1416IR14BSPT16IL14BSPT1611.2
3/8″1116IR11BSPT16IL11BSPT161.11.5

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