ASTM A194 2HM

ASTM A194 Grade 2HM nuts are carbon steel, high tensile nuts used predominantly in the oil, gas and petrochemical industries, used in conjunction with ASTM A193 B7M studs or head fasteners.

100% hardness checked, achieving a Brinell hardness of 159 to 235. These nuts are tempered or stress relieved after machining making them suitable for use in environments which ASTM A194 2H are not.

LoneStar Fasteners Europe stock hold various options of ASTM A194 2HM Nuts offering a standard product, or with the supplementary requirement of ASTM A194 or bespoke manufactured to the additional requirement of API 20E BSL 1, 2 and 3.

ASTM A194 2HM: Forms

  LoneStar Manufacture 
Imperial Nuts – Heavy and Normal Series – Including ANSI B18.2.2
Metric Nuts – Regular and High types – Including DIN 934 H=D, ISO
Available with locking features

ASTM A194 2HM: Sizes and Threads 

  LoneStar Manufacture 
Metric Coarse
Metric Fine
Imperial UNC
Imperial 8UN
Imperial UNF
ACME
Metric sizes available Up to M100
Imperial sizes available Up to 4.00″

ASTM A194 2HM: Chemical Composition

Carbon 0.40 % Min
Manganese 1.00 % Max
Phosphorus 0.040 % Max
Sulphur 0.05 % Max
Silicon 0.40 % Max
Chromium
Nickel
Molybdenum
Copper
Niobium
Titanium
Vanadium
Aluminium
Nitrogen

ASTM A194 2HM: Mechanical Properties

Proof Load Hardness Hardness
Up to 4” Inc. ASTM A194 Table
3 + 4
159-235HB 84 – 99 HRB

Similar or Equivalent Standards 

AFNOR CC45
DIN C45
B.S 1506-162

 

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