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Twist off Type Tension Control Structural Bolt/Nut/Washer Assemblies

Updated 2026-11-04 · Markdown version

Model no. Bolt

US$0.061,000–99,999 pieces

US$0.012100,000+ pieces

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

Material: 20mntib,35vb
Head Style: Round
Standard: GB
Grade: 10.9
Finish: Black
Package Size: 28.00cm * 25.00cm * 13.50cm

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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	20mntib,35vb
Type	Round Head
Model NO.	Bolt
Head Style	Round
Standard	GB
Grade	10.9
Application	Chemical Industry, Building
Finish	Black
Certification	ISO9001
MOQ	1000PCS
Delivery Time	7 Days
Sample	Available
European Anti-Dumping	39.6%
Durability	Enhanced
Transport Package	25kg/Carton+Pallet
Specification	M16-M30
Origin	Ningbo, Zhejiang
HS Code	7318151001
Production Capacity	2500 Tons/Month
Package Size	28.00cm * 25.00cm * 13.50cm
Package Gross Weight	22.000kg
Our main products are fasteners	bolts, screws, rods, nuts, washers, anchors and rivets.
Keyword	china supplies,OEM/ODM,Manufacturer,screw,bolt,hardware.bolt and nut,fastener,carbon steel,fange nut.hexagonal nut.stainless steel nut,zlfastener,sinofastener
Category	Structural & Heavy Hex Bolts

Technical parameters

Standard	GB3632
Size	M16,M20,M22,M24,M27,M30
Grade	10.9
Finish	Black
Material	20MnTiB,35VB

Description

Twist off Type Tension Control Structural Bolt/Nut/Washer Assemblies is part of our structural & heavy hex bolts range (Bolts).

Key details

Type: Round Head
Standard: GB
Material: 20mntib,35vb
Grade: 10.9
Head Style: Round
Finish: Black
Application: Chemical Industry, Building
Certification: ISO9001

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$0.012 – 0.06 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 Twist off Type Tension Control Structural Bolt/Nut/Washer Assemblies?

The listed minimum order is 1,000 pieces, at US$0.012 – 0.06 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$0.06 for 1,000–99,999 pieces; US$0.012 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Twist off Type Tension Control Structural Bolt/Nut/Washer Assemblies?

Type: Round Head; Standard: GB; Material: 20mntib,35vb; Grade: 10.9; Head Style: Round; Finish: Black. 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 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 – 0.06MOQ 1,000 piecesGet a quote WA