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Structural Tc Bolt – Round Head – ASTM

Updated 2026-11-04 · Markdown version

Model no. twist off bolt hex bolt

US$0.012 – 1.20 / box

MOQ 5,000 boxes · Final price confirmed in your quote

Head Style: Round
Standard: DIN, GB
Grade: 10.9
Surface Treatment: Galvanized/Colored Zinc/Blue and White Zinc/Origi
Package Size: 32.00cm * 20.00cm * 15.00cm
Material: Carbon Steel
Standard products: 5-7 days
Custom orders: 15-25 days

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

Model NO.	twist off bolt hex bolt
Connection	Common Bolt
Head Style	Round
Standard	DIN, GB
Grade	10.9
Application	Machinery, Chemical Industry, Building
OEM	Available
Surface Treatment	Galvanized/Colored Zinc/Blue and White Zinc/Origi
Delivery Date	Within 7 Days If in Stock
Supply Ability	10000000 Piece/Pieces Per Day
Transport Package	Carton with Pallet
Specification	M16-M36
Origin	China
HS Code	7318159001
Production Capacity	5billion/Year
Package Size	32.00cm * 20.00cm * 15.00cm
Package Gross Weight	18.000kg
Customization	Available
Material	Carbon Steel
Type	Hexagon Head
Shipping Cost	Contact the supplier about freight and estimated delivery time.
Please provide	Product specifications (
We accept	30% deposit + 70% balance
We offer multiple options	Sea shipping (FCL/LCL) - most economical
Standard products	5-7 days
Custom orders	15-25 days
Category	Structural & Heavy Hex Bolts

Technical parameters

Material	Carbon Steel
Type	TC bolts
Finish	Black Coating. HDG.Dacromet.Zinc Coat
Place of Origin	China
Size	M12-M36
Length	40mm-320mm
Measurement system	Metric, Imperial (Inch)
HS Code	7318159001

Description

Structural Tc Bolt – Round Head – ASTM is part of our structural & heavy hex bolts range (Bolts).

Key details

Type: Hexagon Head
Standard: DIN, GB
Material: Carbon Steel
Grade: 10.9
Head Style: Round
Surface Treatment: Galvanized/Colored Zinc/Blue and White Zinc/Origi
Connection: Common Bolt
Application: Machinery, Chemical Industry, Building

Available configurations include head style, standard, grade, surface treatment and package size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 5,000 boxes at US$0.012 – 1.20 per box. 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 Structural Tc Bolt – Round Head – ASTM?

The listed minimum order is 5,000 boxes, at US$0.012 – 1.20 per box. 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 Structural Tc Bolt – Round Head – ASTM?

Type: Hexagon Head; Standard: DIN, GB; Material: Carbon Steel; Grade: 10.9; Head Style: Round; Surface Treatment: Galvanized/Colored Zinc/Blue and White Zinc/Origi. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include head style, standard, grade, surface treatment and package size. 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 structural & heavy hex bolts are available?

The Structural & Heavy Hex Bolts category lists 2,565 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/

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$0.012 – 1.20MOQ 5,000 boxesGet a quote WA