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Anchors & Construction Fixings › Wedge & Through-Bolt Anchors

Seismic Design OEM ODM Custom External Hexagon Internal Expansion Wedge Anchor Bolt

Updated 2026-11-03 · Markdown version

Model no. Internal Expansion Burst Bolt

US$0.12 – 2.40 / piece

MOQ 1,000 pieces · Final price confirmed in your quote

Material: Stainless Steel
Head Style: Round
Standard: DIN, ANSI, GB, JIS, BSW, GOST
Grade: 8.8
Finish: Blue-White Zinc Plated
Material-01: Carbon Steel / Alloy Steel / Stainless Steel
Material-02: Aluminum Alloy
Coating: Plain / Zinc Plated / Dacromet / HDG

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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

Customization	Available
Material	Stainless Steel
Type	Round Head
Model NO.	Internal Expansion Burst Bolt
Connection	Common Bolt
Head Style	Round
Standard	DIN, ANSI, GB, JIS, BSW, GOST
Grade	8.8
Application	Machinery, Chemical Industry, Environmental, Building
Finish	Blue-White Zinc Plated
Product Name	Internal Expansion Bolt
Keywords	Bolts Fastener
Material-01	Carbon Steel / Alloy Steel / Stainless Steel
Material-02	Aluminum Alloy
Coating	Plain / Zinc Plated / Dacromet / HDG
Surface	White
Packaging	Plastic Bag / Paper Box
Nominal Diameter (D)	M6 M8 M10 M12
Pitch (P)	1 - 3.5
Head Thickness	4 -15 mm
MOQ	10000PCS
Sample	Accept
OEM & ODM Custom	Accept
Logo Custom	Accept
Transport Package	Standard Shipping Packaging or Customized
Specification	Standard Specifications Or Customized
Origin	Zhejiang, China
Production Capacity	5000000 PCS/Year
Package Size	120.00cm * 100.00cm * 100.00cm
Package Gross Weight	500.000kg
Carbon Steel	suitable for ordinary conditions, low cost, and good load-bearing capacity. Heat treatment can be performed as needed to increase strength.
Alloy Steel	usually adds elements such as chromium, nickel, and molybdenum to improve strength and high-temperature resistance, and is mostly used in demanding working environments.
Stainless Steel	has good corrosion resistance and is suitable for humid or chemical environments.
Aluminum alloy	It is lightweight and corrosion-resistant, and is suitable for applications where weight is required.
Melting and casting	Select appropriate metal materials for melting and then cast into the basic shape of the bolt.
Cold forging or hot forging	To improve the density and strength of the material, the initial forming of the bolt is usually cold forging or hot forging.
Cutting	Includes mechanical processing processes such as turning and milling, which are used to form the shape of the screw, thread, and head.
Heat treatment	Improve the mechanical properties of the bolt through quenching, tempering, etc., and improve its strength and durability.
Surface treatment	In order to improve corrosion resistance or appearance, the bolt is often galvanized, sprayed, or other surface treatment processes.
Raw material preparation	Select appropriate metal materials, such as steel or alloy materials, and pass acceptance to ensure qualified quality.
Forming	Use forging and other processes to process metal materials into semi-finished products close to the shape of bolts.
Inspection and packaging	After strict quality inspection, qualified bolts are packaged and prepared for shipment.
Hexagonal bolts	The most common shape, with a hexagonal head, is easy to install and remove with a wrench.
Round head bolts	The head is round and is usually used in places with high visual requirements.
Square head bolts	The head is square and suitable for installation in small spaces.
Special bolts	Such as bolts with anti-theft design, or customized bolts for specific purposes.
Category	Wedge & Through-Bolt Anchors

Technical parameters

Product Information
Name	Stainless Steel Internal Expansion Bolt
Standard	National Standard
Material	304 Stainless Steel
Surface	White
Packaging	Plastic Bag / Paper Box

Specifications	Casing Outer Diameter	Thread Nominal	Nominal Length	Casing Length
M6x50(5pieces)304	8	50	54	40
M6x60(5pieces)304	8	60	64	50
M6x70(5pieces)304	8	70	74	60
M6x80(2pieces)304	8	80	84	70
M6x100(2pieces)304	8	100	104	90
M8x60(1pieces)304	10	60	65	45
M8x70(1pieces)304	10	70	75	55
M8x80(1pieces)304	10	80	85	65
M8x100(1pieces)304	10	100	105	85
M8x120(1pieces)304	10	120	125	105
M10x60(1pieces)304	12	60	66	45
M10x70(1pieces)304	12	70	76	55
M10x80(1pieces)304	12	80	86	65
M10x90(1pieces)304	12	90	96	75
M10x100(1pieces)304	12	100	106	85
M10x120(1pieces)304	12	120	126	105
M12x80(1pieces)304	16	80	88	60
M12x90(1pieces)304	16	90	98	70
M12x100(1pieces)304	16	100	108	80
M12x120(1pieces)304	16	120	128	100

Description

Seismic Design OEM ODM Custom External Hexagon Internal Expansion Wedge Anchor Bolt is part of our wedge & through-bolt anchors range (Anchors & Construction Fixings).

Key details

Type: Round Head
Standard: DIN, ANSI, GB, JIS, BSW, GOST
Material: Stainless Steel
Grade: 8.8
Head Style: Round
Finish: Blue-White Zinc Plated
Connection: Common Bolt
Application: Machinery, Chemical Industry, Environmental, Building

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.12 – 2.40 per piece. 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 Seismic Design OEM ODM Custom External Hexagon Internal Expansion Wedge Anchor Bolt?

The listed minimum order is 1,000 pieces, at US$0.12 – 2.40 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Seismic Design OEM ODM Custom External Hexagon Internal Expansion Wedge Anchor Bolt?

Type: Round Head; Standard: DIN, ANSI, GB, JIS, BSW, GOST; Material: Stainless Steel; Grade: 8.8; Head Style: Round; Finish: Blue-White Zinc Plated. 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 finish. 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 wedge & through-bolt anchors are available?

The Wedge & Through-Bolt Anchors category lists 1,201 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/anchors-construction-fixings/wedge-through-bolt-anchors/

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

More about us → · Request a sample or custom quote →

Request a quote for this product

US$0.12 – 2.40MOQ 1,000 piecesGet a quote WA