Frequently Asked Questions

Conductive vs. Fastening Nuts

tin_plated_brass_nutConductive Fasteners (nuts)

Brass or plated brass nuts are used when a fastener is to be used in a conductive position. These conductive fasteners pass current more efficiently than steel. These nuts will be indicated by a ‘BLUE DOT’ marking, and should be kept in their conductive location.

stainless_steel_nutTightening Fasteners (nuts)

Stainless steel and steel nuts are used to torque or tighten an assembly. These fasteners are in a position where torque is necessary, but not conductivity. These fasteners are less expensive, thereby lowering the cost of the assembly, while increasing the amount of fastening torque allowed.

Are we RoHS Compliant?

VTE Inc. is RoHS Compliant – Click Here to Refer to RoHS Standards



VTE Inc. CAGE Code: 7z043 – Click Here for CAGE Code Definition


What are my material options?
Material UL94 Flame Class Brittleness Temp oC Service TempoC Tensile Strength, PSI Elongation, % Tear Strength, PPI
V – Vinyl
(Standard, Self Extinguishing)
V-2 -48 105 1550 400 230
F – Vinyl
(FR Material, Non-Flammable)
V-0 -30 105 1500 350 230
T – TPR *
(Thermoplastic Rubber)
HB <-60 125 1020 450 131
S Material has been discontinued.
* Due to difficulties in molding with T material, not all insulators are available in this material. Please contact VTE Inc. for functional usefulness and availability.

Click Here to see comprehensive material properties.

Define the term ‘Barrel’

Def_BarrelBarrel: part of the insulator cap designed to cover the terminal length of the entering cable or wire.

Where do I get the measurement for the cap’s diameter?

Def_CapDiameterThe diameter of the portion of the cap that fits over the terminal and post.

The inside diameter of the cap’s body should match the outer diameter of the terminal and post.

What does the phrase ‘Cable Entry Size’ mean?

Def_CableEntrySizeCable Entry Size: Where the cable enters the cap.

To size, use the inner diameter of the entrance of the cap’s barrel.

How to determine right or left side cable entry
  1. Def_LRCableEntryPosition insulator so terminal opening is facing down.
  2. Position insulator so cable entry is near you.
  3. Cable opening determines cable entry side.
What is a ring or eyelet terminal?

Def_RingEyeletTerminalsRing Terminals often are brazed, with open end.

Lug terminals often are closed end, drawn from copper tube.

Both ring and lug terminals are considered eyelet terminals.

What is the post height?

Def_PostHeightPost Height: the height of the stud / post / screw that must be covered.

Use the body of the cap’s height for measurement.

How to find terminal length?

Def_TerminalLengthFind the terminal length by measuring from the center of the terminal ring and the end of the exposed metal.

Use this measurement to determine the cap’s barrel length.

What is the term ‘Terminal O.D.’ refer to?

Def_TerminalODTerminal O.D. (outside diameter) refers to the width of the terminal or eyelet ring.

Use this measurement to determine a cap’s body diameter

Do your insulators have a shelf life?

When stored in accordance with normal warehouse conditions, the shelf life of our molded components can exceed 10 years without failure.