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Black Oxide GB812 Class10 M12 Hex Nuts Round Nuts
  • Standard & made-to-drawing parts
  • Checked before shipping
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Nuts › Hex & Other Standard Nuts

Black Oxide GB812 Class10 M12 Hex Nuts Round Nuts

Updated 2026-11-04 · Markdown version

US$1,8603–4 tons US$1,8005–9 tons US$1,74010+ tons

MOQ 3 tons · Final price confirmed in your quote

Material
Carbon Steel
Head Style
Round
Standard
DIN, ANSI, GB, JIS, GOST, BSW, ISO Uni
Grade
10.9
Material Name
40cr/45/42CrMo/35CrMo
Surface Treatment
Black Oxide
Materrial and surface teatment can be replaced with as below
Mechnical Property
Packing way
25kg/carton, 1.5tons-2.5tons / pallet ; or as requested by buyer.
Get a quote

Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

CustomizationAvailable
MaterialCarbon Steel
TypeRound Head
ConnectionCommon Bolt
Head StyleRound
StandardDIN, ANSI, GB, JIS, GOST, BSW, ISO Uni
Grade10.9
Material Name40cr/45/42CrMo/35CrMo
Property ClassClass10
Surface TreatmentBlack Oxide
Transport PackageCarton+Pallet
Specification25kg/carton
OriginChina
HS Code73181600
Production Capacity1500tons/Month
Materrial and surface teatment can be replaced with as belowMechnical Property
Packing way25kg/carton, 1.5tons-2.5tons / pallet ; or as requested by buyer.
P.S.Please contact us to re-quote the exact price before placing an order, due to material price is unstable.
CategoryHex & Other Standard Nuts

Technical parameters

GB 812 - M12 - Class10 - Black Oxide
Mechnical PropertyMaterialSurface Treatment
Class 6 / 8/ 10 /12C45 40Cr 35CrMo 42CrMo♦Plain+oil ♦Zinc Plated ♦HDG ♦Phosphate ♦Dacromet ♦Geomet
Other Special Round Nuts
Our Factory Introduction

Description

Black Oxide GB812 Class10 M12 Hex Nuts Round Nuts is part of our hex & other standard nuts range (Nuts).

Key details

  • Type: Round Head
  • Standard: DIN, ANSI, GB, JIS, GOST, BSW, ISO Uni
  • Material: Carbon Steel
  • Grade: 10.9
  • Head Style: Round
  • Surface Treatment: Black Oxide
  • Connection: Common Bolt
  • Material Name: 40cr/45/42CrMo/35CrMo

Available configurations include material, head style, standard, grade and material name. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 3 tons at US$1,740 – 1,860 per ton. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Black Oxide GB812 Class10 M12 Hex Nuts Round Nuts?

The listed minimum order is 3 tons, at US$1,740 – 1,860 per ton. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$1,860 for 3–4 tons; US$1,800 for 5–9 tons; US$1,740 for 10+ tons. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Black Oxide GB812 Class10 M12 Hex Nuts Round Nuts?

Type: Round Head; Standard: DIN, ANSI, GB, JIS, GOST, BSW, ISO Uni; Material: Carbon Steel; Grade: 10.9; Head Style: Round; Surface Treatment: Black Oxide. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, head style, standard, grade and material name. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other hex & other standard nuts are available?

The Hex & Other Standard Nuts category lists 8,354 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

  • DIN, ISO, ASTM, ANSI, JIS and GB standard parts
  • Non-standard parts made to your drawing
  • Dimensions, thread gauges and plating checked before packing
  • Export cartons and pallets, consolidated mixed orders
  • Samples available for approval before mass production
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Sorting & packing
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US$1,740 – 1,860MOQ 3 tonsGet a quote