PERMABOND HM-128

Harmonization Code : 8001.20 | Unwrought tin: Tin alloys

PERMABOND HM-128

Main features

  • High-Strength Permanent Threadlocking
  • Vibration-Loosening Control for Metal Fasteners
  • Controlled Cured Torque for Permanent Assembly

Product Description

Permabond HM128 is a high-strength anaerobic threadlocker for permanent locking of bolts, studs and cap screws in metal assemblies. It is used in machinery, equipment and electric motor assembly to prevent vibration loosening and can replace mechanical lock washers in supported applications. With a viscosity of 500 cP at 25 deg C, HM128 reaches typical handling strength on M10 steel in 15 minutes at 23 deg C and full strength in 24 hours. Typical cured torque on M10 steel to ISO 10964 is 31 N m break and 40 N m prevailing. HM128 is a permanent general-purpose threadlocking grade rather than a removable fastener locker.

Key features

  • High-strength permanent locking: Locks bolts, studs and cap screws for permanent assembly and is used to prevent vibration loosening.
  • 15-minute handling on steel: Typical handling strength is reached on M10 steel in 15 minutes at 23 deg C.
  • Controlled cured torque: Typical M10 steel torque is 31 N m break and 40 N m prevailing to ISO 10964.

Applications

Locking bolts, studs and cap screws; machinery and equipment assembly; electric motor assembly.

Product Family

PERMABOND HM-128

Loading pricing…
TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Red
Chemistry Type
Methacrylate esters
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.1
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
500 mPa.s
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
11 kV/mm
Thermal Properties
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance. Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
0.19 W/m.K

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
Chemical compositionMethacrylate esters-Uncured material
Viscosity500cPUncured material; 25 deg C
Specific gravity1.1-Uncured material
Storage temperature5 to 25deg CManufacturer storage guidance
Technical properties

After-processing / final-state properties

PropertyValueUnitMethod / condition
Break torque31N mTypical cured material; M10 steel; ISO 10964
Prevailing torque40N mTypical cured material; M10 steel; ISO 10964
Shear strength17MPaTypical cured material; steel collar and pin; ISO 10123

Leading Brands Trust in Our Products and Services

Products that Perform| Knowledge that Serves| Service that Delivers