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Heavy-Duty Slotted Spring Pins · GB/T 879.1-2018
Pins

Heavy-Duty Slotted Spring Pins

GB/T 879.1-2018 (reference only)

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GB/T 879.1-2018 dimension drawing

Dimensions in mm
GB/T 879.1-2018 dimension drawing

Specification parameters

Technical conditions and referenced standards
Steel Austenitic stainless steel Martensitic stainless steel
Material
  • St (at the manufacturer’s discretion)
  • A
  • B
  • Chemical composition (%)
  • Quality carbon steel
  • Silicon-manganese steel
  • C≤0.15
    Mn≤2.00
    Si≤1.50
    Cr:16~20
    Ni:6~12
    P≤0.045
    S≤0.03
    Mo≤0.8
    Cold working
  • C≥0.15
    Mn≤1.00
    Si≤1.00
    Cr:11.5~14
    Ni≤1.00
    P≤0.04
    S≤0.03
    Hardness after quenching and tempering: 440–560 HV
  • C≥0.65
    Mn≥0.5
    Hardness after quenching and tempering: 420–520 HV
    or hardness after austempering: 500–560 HV
  • C≥0.5
    Si≥1.5
    Mn≥0.7
    Hardness after quenching and tempering: 420–560 HV
  • C≤0.15
    Mn≤2.00
    Si≤1.50
    Cr:16~20
    Ni:6~12
    P≤0.045
    S≤0.03
    Mo≤0.8
    Cold working
  • C≥0.15
    Mn≤1.00
    Si≤1.00
    Cr:11.5~14
    Ni≤1.00
    P≤0.04
    S≤0.03
    Hardness after quenching and tempering: 440–560 HV
Straight slot
General case
  • The shape and width of the straight slot are at the manufacturer’s discretion.
Type N
  • The slot shape and width of non-interlocking spring pins shall be subject to special agreement to prevent the pins from interlocking.
Surface treatment
  • No treatment ;
  • Oxide coating requirements in accordance with GB/T 15519;
  • Phosphate coating requirements in accordance with GB/T 11376;
  • Electroplating requirements in accordance with GB/T 5267.1;
  • Non-electrolytically applied zinc flake coating requirements in accordance with GB/T 5267.2
  • Simple treatment ;
  • Passivation requirements in accordance with GB/T 5267.4
Any other technical requirements or surface treatments shall be agreed between the purchaser and supplier.
All tolerances apply before coating or plating.
Surface discontinuities
  • Irregular or detrimental defects are not permitted;
    The pin shall be free of burrs throughout.
Shear test
  • GB/T 13683
Acceptance inspection and packaging
  • GB/T 90.1, GB/T 90.2
a Other materials shall be agreed between the purchaser and supplier. Hardness testing shall comply with GB/T 4340.1.
b Electroplating or phosphating inevitably introduces a risk of hydrogen embrittlement. Carry out hydrogen relief immediately (see GB/T 5267.1).

Product overview

A heavy-duty slotted spring pin. Confirm the nominal diameter, length and mating hole.

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