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Maison > produits > Vis > M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9

M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9

Détails du produit

Lieu d'origine: Chine

Certification: ISO 9001

Conditions de paiement et d'expédition

Quantité de commande min: 10 pièces

Prix: $0.01~2.56,Piece/Pieces

Détails d'emballage: Sac en plastique + carton en aggloméré + palette en contreplaqué avec ceinture et film plastique.

Délai de livraison: environ 12-18 jours

Conditions de paiement: LC, D/A, D/P, T/T

Capacité d'approvisionnement: 10000, pièce / pièces, mois

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Mettre en évidence:

M18 M22 galvanized hex socket screw

,

Dacromet coated machine metal screw

,

Din912 grade 10.9 hex head screw

Nom du produit:
Vis à métal à tête creuse hexagonale
service:
OEM
Résistance à la corrosion:
Oui
Port:
Shenzhen, Guangzhou
Résistance à la corrosion:
Haut
Type de filetage:
Norme/personnalisation
Emballer:
Sac en plastique + carton en aggloméré + palette en contreplaqué avec ceinture et film plastique.
Finition:
Personnalisé
Nom du produit:
Vis à métal à tête creuse hexagonale
service:
OEM
Résistance à la corrosion:
Oui
Port:
Shenzhen, Guangzhou
Résistance à la corrosion:
Haut
Type de filetage:
Norme/personnalisation
Emballer:
Sac en plastique + carton en aggloméré + palette en contreplaqué avec ceinture et film plastique.
Finition:
Personnalisé
M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9

M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9

M18 M22 Hdg Hot Dig Galvanized Dacromet Geomet Hex Socket Head Machine Metal Screw Din912 Grade 4.8 8.8 10.9 12.9 0



Product Description

These large-diameter hex socket head cap screws are available in M18 and M22, designed for heavy-duty and highly corrosive environments. Material: carbon or alloy steel with property classes 4.8, 8.8, 10.9, or 12.9. Surface finishes include three high-performance options: Hot Dip Galvanized (HDG), Dacromet, and Geomet. HDG provides a thick zinc layer (40-70μm) for outdoor steel structures; Dacromet and Geomet are chromium-free zinc-aluminium coatings offering excellent salt spray resistance (up to 1000 hours) with no hydrogen embrittlement risk. Head conforms to DIN912, allowing high torque via large hex keys.

Applications
Industry Usage
Automotive High-strength applications in engines, heavy-duty machinery, and bridge construction
Mechanical Connecting mechanical parts, circuit boards, engines, transmissions in various industries
Energy Connecting power generation equipment and transmission lines
Architectural Building structures, shipbuilding, and petrochemical equipment

Wind turbine tower flange connections – Grade 12.9 + Dacromet for cyclic loads.

Bridge seismic stoppers – HDG provides 30+ years rust protection.

Chemical reactor manways – Geomet coating resists acid mist.

Mining machinery chassis – M22 high-strength bolts.

Port crane rail clips – HDG resists seawater.

Key Features

Large diameters, high load capacity – M18/M22 for heavy connections.

Multiple strength grades – from 4.8 to 12.9 for design flexibility.

Premium anti-corrosion coatings – HDG, Dacromet, Geomet for various aggressivity levels.

No hydrogen embrittlement – Dacromet/Geomet safe for high-strength bolts.

DIN912 standard – hex drive allows very high torque transmission.

Company Information
Manufacturing facility for stainless steel wheel screws Quality control inspection of industrial bolts Warehouse storage of various fastener products Packaging process for stainless steel fasteners
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days if not in stock (depending on quantity).
Q: Do you provide samples? Is it free or extra?
A: Yes, we offer free samples but customers pay the freight cost.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.