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Zoro Select Grade 8 steel hex nut black oxide finish

Zoro Select

Zoro Select Hex Nut 7/8"-9 Grade 8 Black Oxide 3/4 in

SKU CH-XBVS-MFWRF

Grade 8 steel hex nut with black oxide finish, 7/8"-9 thread and 3/4 in height

  • Product typeNuts
  • Grade 8 steel handles high-stress fastening
  • ASME B 18.2.2 and SAE J995 ensure dimensional accuracy
  • Black oxide finish resists corrosion in harsh environments
  • Made in USA meets domestic sourcing requirements
  • Right-hand thread simplifies standard assembly

Zoro Select Hex Nut 7/8"-9 Grade 8

This black oxide steel fastener meets ASME B 18.2.2 and SAE J995 standards for Grade 8 strength. It suits automotive, industrial and heavy-equipment assemblies that require a 7/8 inch coarse-thread connection. Builders needing metric threads or a different grade should select another item.

Thermals Noise Power

As a passive metal component, the nut generates no heat, emits no sound and draws no electrical power during installation or service. It simply transmits clamping force between joined parts. There are no active cooling or noise considerations to evaluate.

Sustained Load Behavior

Under continuous tension the Grade 8 steel maintains its rated proof load without yielding, provided the joint design follows the referenced standards. The black oxide finish offers limited corrosion resistance; prolonged exposure to moisture or chemicals may require additional protective coating. Inspect torque retention periodically in vibration-prone applications.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameZORO SELECT
Product typeNuts

Questions about this item

How do I install the Zoro Select 7/8"-9 Grade 8 hex nut and what torque step is often missed?

Thread the nut onto a matching 7/8"-9 bolt by hand, then tighten with a 1 19/64 in wrench to the torque value specified for Grade 8 / SAE J995 fasteners; the step often missed is verifying that torque with a calibrated wrench rather than estimating by feel.

What maintenance or replacement will this hex nut need over time?

Inspect the black oxide finish and threads periodically for corrosion or galling; if the coating wears through or threads show damage, replace the nut — Grade 8 steel nuts are not designed for re-use after high-stress clamping.

What is the first limit that appears when this nut is under sustained clamp load?

The proof-load limit defined by SAE J995 for Grade 8 material is reached first; exceeding it causes permanent thread deformation or bolt stretch, so the joint must stay within the Grade 8 design preload.

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