What standards do your double-end studs comply with?

Our products comply with major international standards including DIN 975, ISO 8734, ASME B18.31.2, ANSI, GB, JIS, BSW, and GOST.

What are the common applications for these bolts?

They are widely used in pressure vessels, engine machinery, heavy equipment, electrical/marine installations, and industrial fixtures where space-saving and precise clamping are required.

Double Head Bolts High-Strength 8.8 Grade Double-Head Studs Full-Threaded Half-Threaded Black Double-Head Screws Bolt

Name: Double Head Bolts High-Strength 8.8 Grade Double-Head Studs Full-Threaded Half-Threaded Black Double-Head Screws Bolt
Brand: Tianjin Longshi Fasteners Co., Ltd.
SKU: 2262018785

Tianjin, ChinaTianjin Longshi Fasteners Co., Ltd.

US$0.30

10,000-49,999 Pieces

US$0.09

50,000-99,999 Pieces

US$0.05

100,000+ Pieces

Sample price:US$0.20/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel, Stainless Steel, Alloy Steel

Type

Round Head

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

4.8/8.8/10.9/12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black/Yzp/Bzp/HDG/Dacromet/Plain

Delivery

5-10 Days in Stock, 10-30 Days Not in Stock

Head Mark

Customized

Thread Length

Full Thread/Half Thread

Size

M3-M100

Customized

Yes

Transport Package

Plastic Bags+Cartons+Pallets

Specification

as Request

Trademark

LS or Customized

Origin

Hebei, China

HS Code

731815

Production Capacity

50 Million Tons/Month

Key features

High-Strength Grades: Available in 4.8, 8.8, 10.9, and 12.9 grades for diverse load requirements.

Wide Size Range: Sizes from M2 to M100, with lengths up to 1,000mm for versatile applications.

Customizable Options: Custom head marks and thread lengths (full/half) available upon request.

Low MOQ Policy: Minimum order quantity is only 100 pieces, with no price premium for small orders.

Multiple Finishes: Options include Black, Yzp, Bzp, HDG, Dacromet, and Plain finishes.

Diverse Materials: Constructed from Carbon Steel, Stainless Steel, and Alloy Steel for durability.

Fast Delivery: 5-10 days for in-stock items, 10-30 days for custom orders.

Technical Support: Free 1v1 engineer support for installation guidance and drawing optimization.

Company profile

R&D CapabilitiesStandardized quality controlFlexible CustomizationHigh Repeat Buyers Choice

Tianjin Longshi Fasteners Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤4.89h CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

Address12f Block C, Junlong Square, Heping District, Tianjin, China

Plant Area20 square meters

Number of Employees4

Registered Capital1,000,000 RMB

International Commercial Terms(Incoterms)CIF, FOB, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1000 pcs

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsScrew, Bolts, Nuts, Nails, Tapping Screw, Hexagon Head Bolts, Round Head Bolts, Countersunk Bolts, Double End Studs, Rivets

QA/QC inspectors1 people

Inspection Type for Finished ProductsRandom inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers1 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2024-09-02

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff2

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:What is the minimum order quantity (MOQ)?

The MOQ is 100 pieces. Unlike many peers who require 1,000+, we do not charge any price premium for small orders. First-time cross-border e-commerce or trade customers also receive free samples.

Q:Do you support custom orders?

Yes, we offer 8-dimensional customization including material, specification, and surface treatment. We provide 3D design drawings and process plans to support your custom requirements.

Q:What happens if an item is out of stock?

Our stockout rate is less than 0.1% due to real-time inventory monitoring. In extreme cases of stockouts, we provide free upgraded alternatives, ensuring you are not left waiting indefinitely.

Q:Do you provide technical support?

Yes, we offer dedicated 1v1 engineer teams providing free technical support, including installation guidance and drawing optimization services.

Q:Can I visit your factory?

Yes, we support both online factory tours via real-time video of production lines and laboratories, as well as offline visits with pick-up services available.