AU4 – 1-3/8″ A/F

Technical Data

Plan and side view diagrams of the Termate standoff insulators in the AU4 footprint. Labels show width across flats is 1 and 3/8 inches, width across corners is 1 and 1/2 inches, base diameter is 1 and 1/4 inches, and shoulder height is 3/8 inches. Other dimensions are labelled with a letter, indicating a specific measurement in the table below.

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Part number3D ModelHeight
Thread Size
Thread Depth
Tightening Torque
Tensile Strength**
Cantilever Strength**
Box Qty.
AU4-030-014AU4-030-0141³⁄₁₆¼—20 UNC⁵⁄₁₆62200120060
AU4-030-516AU4-030-5161³⁄₁₆⁵⁄₁₆—18 UNC172800170060
AU4-035-014AU4-035-0141⅜¼—20 UNC⁵⁄₁₆62200110060
AU4-035-516AU4-035-5161⅜⁵⁄₁₆—18 UNC172900160060
AU4-035-038AU4-035-0381⅜—16 UNC323400220060
AU4-040-014AU4-040-0141⁹⁄₁₆¼—20 UNC⁵⁄₁₆62200100050
AU4-040-516AU4-040-5161⁹⁄₁₆⁵⁄₁₆—18 UNC172900150050
AU4-040-038AU4-040-0381⁹⁄₁₆—16 UNC323500210050
AU4-045-014AU4-045-014¼—20 UNC⁵⁄₁₆6220090050
AU4-045-516AU4-045-516⁵⁄₁₆—18 UNC173000140050
AU4-045-038AU4-045-038—16 UNC323600200050
AU4-050-014AU4-050-0142¼—20 UNC⁵⁄₁₆6220080025
AU4-050-516AU4-050-5162⁵⁄₁₆—18 UNC173100130025
AU4-050-038AU4-050-0382—16 UNC323700190025
AU4-050-012AU4-050-0122½—13 UNC564800250025
AU4-060-516AU4-060-5162⅜⁵⁄₁₆—18 UNC173200120025
AU4-060-038AU4-060-0382⅜—16 UNC323800170025
AU4-060-012AU4-060-0122⅜½—13 UNC564900210025

* Fixing details: Hole diameter = Standoff thread size [M]+¹⁄₁₆

** Tensile and Cantilever Strength figures are based on tests carried out at normal room temperature, nominal 73.4 °F

UL Listing

UL Recognised Component

File Number E505645



Glass Reinforced Polyamide 6.6

Insert Material


Operating Temperature

−4 °F to +266 °F


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