Property Class 8.8 Steel Enclosure Grounding Lug Kits are supplied to ISO 898-1 property class 8.8. Corrosion behaviour is requires plating (zinc) for corrosion protection, the material is magnetic, and the usable service range is commonly limited to approx. +300 °C; confirm against the coating and the load. In practice this grade is the workhorse medium-carbon alloy class for structural joints.
- Grade
- ISO 898-1 property class 8.8
- Corrosion resistance
- Requires plating (zinc) for corrosion protection
- Magnetic response
- Magnetic
- Service temperature
- commonly limited to approx. +300 °C; confirm against the coating and the load
Property values are typical for the grade. Certified mechanical test data is available on request for production orders.
Material page for enclosure grounding lug kits in Property Class 8.8 Steel (ISO 898-1 property class 8.8). The sizes below are the ones we supply; there is no published dimensional standard for this article, so the table rather than a standard number is what to quote. Corrosion behaviour is requires plating (zinc) for corrosion protection and the service range is commonly limited to approx. +300 °C; confirm against the coating and the load.
Why Choose Property Class 8.8 Steel for Enclosure Grounding Lug Kits
The workhorse medium-carbon alloy class for structural joints. For enclosure grounding lug kits, this matters when requires plating (zinc) for corrosion protection is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ISO 898-1 property class 8.8 |
|---|
| Magnetic response | Magnetic |
|---|
| Service temperature | commonly limited to approx. +300 °C; confirm against the coating and the load |
|---|
| Corrosion characteristic | Requires plating (zinc) for corrosion protection |
|---|
Corrosion Behavior in Service
Carbon and alloy steel enclosure grounding lug kits require a coating for corrosion protection. Zinc plating (with or without passivation) is the most common; hot-dip galvanizing is used for outdoor structural service; black-oxide is mainly a tarnish-prevention finish for tool-room use.
Comparable Grades
For Enclosure Grounding Lug Kits, class 10.9 or 12.9 is the comparable strength step. Move up when the joint preload approaches the proof load of the current class; move down when the joint is over-specified. For corrosion-critical service, switch to stainless A2 or A4.
Sizes of Enclosure Grounding Lug Kits Available in Property Class 8.8 Steel
| Kit form | Included screw | Included nuts | Wire range (AWG) | Ground bar length (in) | Ground bar width (in) | Ground bar thickness (in) | Material |
|---|
| enclosure grounding lug kit | 10-32×1 | two 10-32 hex nuts | 14~2 | 1-3/16 | 9/16 | 1/2 | steel |
Dimensions are independent of the material: every size above is available in Property Class 8.8 Steel.
Custom manufacturing · Made to drawing
Need this nut in a grade that is not listed?
Grade 8 8 Steel is one of the grades the catalog describes. Thread size is the obvious variable and rarely the interesting one — height for clearance, across-flats for the tool already in the cell, and the locking feature for the vibration actually present. Made by cold heading or tapping.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
Custom nut manufacturingSend a drawing
Applications & Industries
What Enclosure Grounding Lug Kits are specified for, industry by industry.
Industries that specify Enclosure Grounding Lug Kits
-
Industrial panels
The 14–2 AWG range covers the documented enclosure-bonding example.
-
Field service
A complete kit replaces a missing lug, label and retaining hardware together.
-
Electrical enclosures
A grounding-lug kit bonds enclosure components to the grounding conductor.
-
Control cabinets
The supplied screw and nuts install a lug on the grounding bar.
-
Steel fabrication
Bolted structural and frame connections.
-
Automotive & transport
Vibration-prone joints where the locking type is specified on the drawing.
Typical applications
- selecting the wire within the 14–2 AWG range
- checking the bar dimensions against the enclosure
- bonding an enclosure with a grounding lug and bar
- matching the supplied 10-32 screw and nuts
- joints re-torqued at a service interval
- completing a bolted joint on a stud, rod or bolt
Service conditions to specify against
- Marine and coastal
- Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- High load
- Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- Match the class
- A nut below the bolt property class strips before the bolt reaches its own limit — pair class 8 nuts with 8.8 bolts, class 10 with 10.9.
Where to use something else
- Do not omit the grounding label or substitute an ordinary nut for the listed bonding hardware.
Full application guide: where Enclosure Grounding Lug Kits are used, how to specify them, and the cases they are wrong for
