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DIN 931 DIN 933 Grado 8.8 óxido negro acero al carbono pernos de cabeza hexagonal Totalmente y parcialmente roscado

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OEM & Fabricación a medida.
Se admiten pedidos de gran volumen.
Licitación & Soporte de Orden de Proyecto.
Múltiples acabados de superficie.
Estricto control de calidad.
Certificados de materiales disponibles.

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Descripción del producto

el DIN 931 DIN 933 Grade 8.8 Black Oxide Carbon Steel Hex Head Bolts are high-strength external hex bolts designed for machinery assembly, steel structure fastening, equipment installation, construction hardware, and general industrial applications.

Estos pernos están hechos de acero al carbono and produced in Grado 8.8, providing reliable mechanical strength for demanding fastening work. The product range includes both DIN 931 partially threaded hex head bolts y DIN 933 fully threaded hex head bolts, making it suitable for different assembly requirements.

el Black Oxide Finish gives the bolts a uniform black appearance and provides basic surface protection. The hex head design allows installation with standard wrenches, sockets, or torque tools.

Características clave

DIN 931 and DIN 933 hex head bolt series
Grade 8.8 high-strength carbon steel
Black Oxide Finish surface treatment
External hex head for easy tightening
DIN 931 partially threaded structure
DIN 933 fully threaded structure
Suitable for machinery, construction, steel structure, and industrial fastening
Used with matching nuts and washers

Especificaciones del producto

Artículo	Especificación
Nombre del producto	Black Oxide Carbon Steel Hex Head Bolt
Estándar	DIN 931 / DIN 933
clase de resistencia	Grado 8.8
Materiales	acero al carbono
Tratamiento superficial	Black Oxide Finish
Color	negro
Tipo de cabeza	cabeza hexagonal
Tipo de hilo	Rosca métrica
Diseño de hilo	Fully Threaded / Partially Threaded
Fastening Method	Used with Nut, Washer, or Threaded Hole
Solicitud	Machinery, Construction, Steel Structure, Equipment Assembly

DIN 931 vs DIN 933

Estándar	Estructura del hilo	Product Feature
DIN 931	parcialmente roscado	Has a smooth shank section and threaded end
DIN 933	totalmente roscado	Thread runs along the full bolt body

The product image shows a combination of both thread types: shorter bolts with full thread and longer bolts with partial thread. Therefore, DIN 931 / DIN 933 is a suitable product classification.

Material y acabado superficial

Artículo	Descripción
Materiales	acero al carbono
Grado	8.8
terminar	Black Oxide Finish
Apariencia	Superficie negra
Función principal	Provides dark appearance and basic surface protection
Recommended Matching Parts	Hex nuts, flat washers, spring washers

Black Oxide Finish is commonly used for carbon steel fasteners. It gives the bolt a black industrial appearance and helps reduce surface oxidation when used with proper storage and protective oil.

Ventajas del producto

ventaja	Descripción
Rendimiento de alta resistencia	Grade 8.8 carbon steel provides reliable fastening strength.
Two Thread Options	DIN 931 partial thread and DIN 933 full thread meet different assembly needs.
Fácil instalación	Hex head design works with standard wrenches, sockets, and torque tools.
Industrial Appearance	Black oxide finish gives a clean black surface.
Stable Fastening	Suitable for machinery, equipment, steel structure, and construction use.
Matching Assembly	Can be used with nuts and washers for complete fastening solutions.

Aplicaciones comunes

Área de aplicación	Uso típico
Montaje de maquinaria	Machine frame fastening, equipment fixing, mechanical connection
Estructura de acero	Steel plate connection, bracket fixing, frame assembly
Hardware de construcción	Metal support parts, structural components, installation hardware
Equipos industriales	Production equipment, maintenance, replacement fastening
Piezas mecánicas automotrices &	Brackets, supports, chassis-related components
Hardware general	Repair, installation, and industrial fastening work

Estructura del producto

parte	Descripción
cabeza hexagonal	Provides tool contact surface for tightening
Bolt Shank	Supports positioning and load transfer
Threaded Section	Engages with nuts or internal threads
Black Oxide Layer	Creates black surface appearance
Carbon Steel Body	Provides strength and durability

Notas de instalación

paso	Recomendación
1. Confirm Standard	Choose DIN 931 for partial thread or DIN 933 for full thread.
2. Match Thread	Use matching metric nuts or threaded holes.
3. Use Proper Tool	Tighten with a suitable wrench, socket, or torque tool.
4. Add Washer if Needed	Flat washers help distribute load on the assembly surface.
5. Store Properly	Keep black oxide bolts dry and protected to reduce rust risk.

Preguntas frecuentes

1. What is this product?

Este producto es un DIN 931 / DIN 933 Grade 8.8 black oxide carbon steel hex head bolt.

2. What is the material?

The material is acero al carbono.

3. What is the strength grade?

The strength grade is Grado 8.8.

4. What is the surface treatment?

The surface treatment is Black Oxide Finish.

5. What is the difference between DIN 931 and DIN 933?

DIN 931 is partially threaded, with a smooth shank and threaded end.
DIN 933 is fully threaded, with thread along the bolt body.

6. Is this a stainless steel bolt?

No. This product is described as acero al carbono con Black Oxide Finish.

7. What tools are used for installation?

It can be installed with a wrench, socket, or torque tool that matches the hex head size.

8. What parts are usually used together with this bolt?

It is commonly used with matching hex nuts, flat washers, and spring washers.

9. Where can these bolts be used?

They are suitable for machinery, construction, steel structure, industrial equipment, automotive components, and general fastening applications.

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