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AM2 – 25mm A/F

Technical Data

Plan and side view diagrams of the Termate standoff insulators in the AM2 footprint. Labels show width across flats is 25mm, width across corners is 27mm, base diameter is 22mm, and shoulder height is 6mm. Other dimensions are labelled with a letter, indicating a specific measurement in the table below.

For smaller sizes click here

For larger sizes click here

Part Number3D ModelHeight
[H] (mm)
Thread Size*
Thread Depth
[D] (mm)
Tightening Torque
Tensile Strength**
Cantilever Strength**
Box Qty.
AM2-025-06AM2-025-06 STEP file25M671195005500120
AM2-030-06AM2-030-06 STEP file30M671195005200120
AM2-030-08AM2-030-08 STEP file30M8928125007300120
AM2-035-06AM2-035-06 STEP file35M671195004900120
AM2-035-08AM2-035-08 STEP file35M8928128006900120
AM2-040-06AM2-040-06 STEP file40M67119500470060
AM2-040-08AM2-040-08 STEP file40M8112813000660060
AM2-050-06AM2-050-06 STEP file50M67119600410060
AM2-050-08AM2-050-08 STEP file50M8112813600580060
AM2-060-06AM2-060-06 STEP file60M67119700360050
AM2-060-08AM2-060-08 STEP file60M8112814100510050
AM2-080-06AM2-080-06 STEP file80M67119800250040
AM2-080-08AM2-080-08 STEP file80M8112815100360040
AM2-100-06AM2-100-06 STEP file100M67119900140030
AM2-100-08AM2-100-08 STEP file100M8112816100220030

* Fixing details: Hole diameter = Standoff thread size [M]+1 mm. e.g. M6 Thread = 7 mm hole diameter.

** Tensile and Cantilever Strength figures are based on tests carried out at normal room temperature, nominal 23 °C.

Our metric insulators can be converted into Male/Male or Female/Male versions by fitting studs from our Grub Screw Pack.

UL Listing

UL Recognised Component

File Number E505645



Glass Reinforced Polyamide 6.6

Insert Material


Operating Temperature

−40 °C to +130 °C


UL 94 V-0

Oxygen Index


Glow Wire

960 °C


Equipment Voltage, Ue

1000 V AC, 1500 V DC

Insulation Voltage, Ui

1000 V AC, 1500 V DC

Impulse Voltage, Uimp
12 kV

Standoff Insulators:


Termate’s AM2 standoff insulator range provides excellent electrical insulation and mechanical strength for a variety of applications. Standoff insulators can also be referred to as post insulators, egg insulators, bobbin insulators, or busbar isolators.

This standoff insulator range is available in heights from 25 mm to 100 mm and insert sizes of M6 and M8. Technical data is found on the table above which displays heights, thread size and depth, maximum tightening torques, tensile and cantilever strengths, and box quantities available.

  • Made from UL 94 V-0 rated, self-extinguishing material
  • Halogen Free
  • Operating temperature range of −40 °C to +130 °C 
  • Insulation voltage of up to 1000 V AC, 1500 V DC
  • Equipment voltage of up to 1000 V AC, 1500 V DC
  • UL Recognised Component; file number E505645

View our standoff insulator cross-reference tool. Find our AM1AM4 and AM6 range here.

Our standoff insulators are made from a halogen-free glass-reinforced material, which was specifically chosen for its mechanical and electrical insulation properties.

Brass inserts are used due to this alloy’s resistance to corrosion. The injection moulding process, combined with our excellent quality control and inspection procedures, results in a consistent product across every production run.


Termate carries out rigorous and appropriate testing on all our products. The AM2 range of standoff insulators successfully passed extensive testing to ensure their electrical and mechanical capabilities.

AM2 standoff insulators meet the requirements for UL 94 V-0. UL 94 being a standard for the safety of flammability of plastic materials for parts in devices and appliances released by the Underwriters Laboratories.

The insulating stand off range is also fully compliant with the applicable clauses within the international standard for low-voltage switchgear and controlgear assemblies, IEC 61439.

Our Standoff insulator range is a UL Recognised Component, more information can be found at UL Product IQ.


Our standoff insulators are suitable for assemblies up to 1000 V AC or up to 1500 V DC. They are intended to safely and securely support and insulate busbars and other live conductors by maintaining a distance between two surfaces. In these types of installations, the electrical insulation and the mechanical strength of the support are paramount. Usual installations are within:

  • Battery Energy Storage Systems
  • Electrical panel boards
  • Control panels
  • Switchboards
  • EV power trains
  • Power factor correction
  • Distribution boards
  • Generators
  • Switchgear
  • Controlgear
  • Drives, inverters and converters

These electrical installations can be found in a wide range of sectors including power distribution, rail (rolling stock & trackside), renewable energy, UPS (temporary and emergency power), and data centre power distribution.

At Termate, we have been designing and manufacturing electrical insulating parts and components, such as our standoff insulators, from our Nottingham UK based factory for over 60 years. Quality is ensured on every product we produce. Our knowledge and experience of the raw materials used, the performance requirements, and the application of our products allow us to provide products that are safe and fit for purpose.

Termate is committed to the highest standard of customer focus and we have made every effort to maintain the accuracy and completeness of the information provided in this data. Where improvements to our products affect their installation and usage we endeavour to contact any customers who may be affected.

Warranty as stated in our Terms and Conditions of Trading is void if any modification is made to the warranted product.