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GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

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Plastic Bolt

Ms. Amylin

amylin@ybfasteners.com

+8618658229310

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GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

Brand Name:	YONGBIAO
Model Number:	GB21
MOQ:	50000
Price:	Negontiation
Packaging Details:	Plastic Bag / Paper Box
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

ISO 9001

Finish:

Zinc Plated

Sample:

Free Samples

Usage:

For Fastening Metal To Metal

Measurement System:

INCH, Metric

Standard:

DIN, ANSI, GB, JIS, BSW, GOST

Connection:

Common Bolt

Quality:

100% Inspection

Supply Ability:

500 Tons/month

Highlight:

GB21 hexagon head bolt grade 8.8

small hexagon bolt for machinery

grade 10.9 hexagon head bolt

Product Description

GB21 Small Hexagon Head Bolts

GB21 Small Hexagon Head Bolts (Small Hex Head Bolts per GB 21-1976) are Chinese national standard fasteners featuring a compact hexagonal head design with smaller across-flats dimensions compared to standard GB30 hex bolts, making them ideal for tight spaces where standard bolts cannot fit.

Key Features

Compact Head Profile: Reduced hex head width allows installation in confined spaces without compromising clamping force
High Tensile Strength: Available up to Grade 12.9 with nominal tensile strength reaching 1,000 MPa after heat treatment
Versatile Material Grades: From Grade 4.8 for general-purpose fastening to Grade 10.9/12.9 for high-load structural connections
Multiple Surface Finishes: Zinc plating for indoor corrosion protection; hot-dip galvanizing and Dacromet for outdoor and harsh environments
Precision Manufacturing: Cold forging and CNC machining ensure dimensional accuracy and consistent thread quality per GB 21-1976 standards
Full Traceability: Mill test certificates and third-party inspection reports (SGS, BV) available upon request

Technical Specifications

Measurement System	INCH, Metric
Standard	DIN, ANSI, GB, JIS, BSW, GOST
Process	Cold Forging
Finish	Zinc Plated
Load Capacity	Medium Duty
Usage	For Fastening Metal To Metal
HS Code	7318151001

Customization Services

We offer comprehensive OEM and ODM services to meet your specific requirements:

Custom head styles, drive types (Phillips H / Pozidriv Z), and thread designs
Special lengths, diameters, and tolerances
Specific material grades and surface finishes
Custom packaging with your branding (labels, boxes, bags, blister packs)
Logo engraving on screw heads

Why Choose Us

Professional fastener manufacturer with over 10 years of export experience
Advanced automatic cold heading and thread rolling equipment ensuring consistent quality and fast delivery
Strict quality control system from raw material sourcing to finished product
Competitive factory-direct pricing with no middlemen
Responsive customer service and technical support
Flexible MOQ to accommodate both trial orders and bulk shipments

Product Images

Packaging Options

Bolts are packed in neutral packaging boxes with standard quantities arranged in small cartons. Custom packaging configurations are available upon request. Small cartons are consolidated into larger master cartons for secure transportation. Palletized units are wrapped with waterproof film and reinforced with packaging straps, with custom shipping marks available.

Packaging Images

Email: rainting@ybfasteners.com

Tags:

Products Details

Home > Products >

Spring Lock Washer

GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

All Category

GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

Brand Name:	YONGBIAO
Model Number:	GB21
MOQ:	50000
Price:	Negontiation
Packaging Details:	Plastic Bag / Paper Box
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Brand Name:

YONGBIAO

Certification:

ISO 9001

Model Number:

GB21

Finish:

Zinc Plated

Sample:

Free Samples

Usage:

For Fastening Metal To Metal

Measurement System:

INCH, Metric

Standard:

DIN, ANSI, GB, JIS, BSW, GOST

Connection:

Common Bolt

Quality:

100% Inspection

Minimum Order Quantity:

50000

Price:

Negontiation

Packaging Details:

Plastic Bag / Paper Box

Delivery Time:

7-25Days

Payment Terms:

T/T

Supply Ability:

500 Tons/month

Highlight:

GB21 hexagon head bolt grade 8.8

small hexagon bolt for machinery

grade 10.9 hexagon head bolt

Product Description

GB21 Small Hexagon Head Bolts

Key Features

Compact Head Profile: Reduced hex head width allows installation in confined spaces without compromising clamping force
High Tensile Strength: Available up to Grade 12.9 with nominal tensile strength reaching 1,000 MPa after heat treatment
Versatile Material Grades: From Grade 4.8 for general-purpose fastening to Grade 10.9/12.9 for high-load structural connections
Multiple Surface Finishes: Zinc plating for indoor corrosion protection; hot-dip galvanizing and Dacromet for outdoor and harsh environments
Precision Manufacturing: Cold forging and CNC machining ensure dimensional accuracy and consistent thread quality per GB 21-1976 standards
Full Traceability: Mill test certificates and third-party inspection reports (SGS, BV) available upon request

Technical Specifications

Measurement System	INCH, Metric
Standard	DIN, ANSI, GB, JIS, BSW, GOST
Process	Cold Forging
Finish	Zinc Plated
Load Capacity	Medium Duty
Usage	For Fastening Metal To Metal
HS Code	7318151001

Customization Services

We offer comprehensive OEM and ODM services to meet your specific requirements:

Custom head styles, drive types (Phillips H / Pozidriv Z), and thread designs
Special lengths, diameters, and tolerances
Specific material grades and surface finishes
Custom packaging with your branding (labels, boxes, bags, blister packs)
Logo engraving on screw heads

Why Choose Us

Professional fastener manufacturer with over 10 years of export experience
Advanced automatic cold heading and thread rolling equipment ensuring consistent quality and fast delivery
Strict quality control system from raw material sourcing to finished product
Competitive factory-direct pricing with no middlemen
Responsive customer service and technical support
Flexible MOQ to accommodate both trial orders and bulk shipments

Product Images

Packaging Options

Packaging Images

Email: rainting@ybfasteners.com

Tags:

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Precision Turned Components

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products details

Pan Head Screw

Bugle Head Screw

Self Tapping Screw

Self Drilling Screw

Stainless Steel Screw

Screw Kit

Concrete Anchor Bolt

Hex Head Bolt

Allen Head Bolt

Machine Bolt

Expansion Anchor Bolt

Hex Head Nut

Spring Lock Washer

Waterproof Cable Gland

Precision Turned Components

Plastic Bolt

GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

GB21 hexagon head bolt grade 8.8

small hexagon bolt for machinery

grade 10.9 hexagon head bolt

Products Details

Pan Head Screw

Bugle Head Screw

Self Tapping Screw

Self Drilling Screw

Stainless Steel Screw

Screw Kit

Concrete Anchor Bolt

Hex Head Bolt

Allen Head Bolt

Machine Bolt

Expansion Anchor Bolt

Hex Head Nut

Spring Lock Washer

Waterproof Cable Gland

Precision Turned Components

Plastic Bolt

GB21 Small Hexagon Head Bolt Grade 8.8 10.9 for Machinery Equipment

GB21 hexagon head bolt grade 8.8

small hexagon bolt for machinery

grade 10.9 hexagon head bolt