Phosphor Bronze C51900 Fasteners

AISI 4130 Bolts

Phosphor bronze C51900 fasteners are manufactured and stock in variety of sizes and forms including regular hex bolts, hex nuts, screws, stud bolts, threaded rods, countersunk screws, hex nuts, plain washer, split lock washers, dowel pins, etc. Alloy C51900 fasteners are used in field of aerospace, building marine equipment, chemical processing equipment, etc. BoltPort produces phosphor bronze fasteners in metric and imperial system.

About Alloy 519 Phosphor Bronze

Phosphor Bronze Alloy 519is a industrial copper alloy with addition of phosphorus that is high resistant to sea water and industrial atmosphere. C51900 phosphor bronze is also resistant to stress corrosion cracking along with excellent combination of tensile strength and electrical conductivity.

Alloy C51900 Chemical Composition

  • Tin Sn 5 - 7
  • Zinc Zn 0.3 max
  • Phosphorous P 0.03 - 0.35
  • Lead Pb 0.05 max
  • Iron Fe 0.1 max
  • Copper Cu Balance

Alloy C51900 Mechanical properties

  • Tensile Strength (MPa): 324-965
  • 0.2% Yield (MPa) : 135-552
  • Elongation % : 64
  • Poisson's ratio : 0.34
  • Elastic modulus : 117 GPa

Alloy C51900 Fasteners

  • C51900 Bolts
  • C51900 Screws
  • C51900 Stud Bolts
  • C51900 Nuts
  • C51900 Washers
  • C51900 Pins
  • C51900 Threaded Rods

C51900 Specifications

Specifications Material Form Products
ASTM B103 Grade C51900    
ASTM B139 Grade C51900    
SAE J461 Grade C51900    
SAE J463 Grade C51900    


  • Marine fastening
  • Aerospace fastening
  • Chemical process equipment fastening
  • Fastening for industrial cooling system

Regular products

DIN 931 Hex Bolts, DIN 933 Hex Screws, DIN 934 Hex Nuts, ASME B18.2.1 Heavy Hex Bolts, ASME B18.2.2 Heavy Hex Nuts, DIN 125 Plain Flat Washers, DIN 127 Split Lock Washers, DIN 976 Stud Bolts, ASME B16.5 Stud Bolts, etc.