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Threaded Rods & Studs › Double-End & Tap-End Studs

Grade 8.8 Black Phosphated Double End Welding Stud Bolts Structural Connection Hardware Group for Engine Blocks

Updated 2026-11-04 · Markdown version

US$0.004810,000–49,999 pieces

US$0.001250,000+ pieces

MOQ 10,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Surface Finishing: Zinc Plated
Grade: A
Customized: Customized
Length: Customized
Other Material: Stainless/Carbon Steel
Size: Customized
Standard: DIN 975 / DIN 976 / GB / ISO / ASTM A193

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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	Carbon Steel
Surface Finishing	Zinc Plated
Grade	A
Certification	ISO, RoHS, CE
Customized	Customized
OEM & ODM	Custom Made to Drawing
Length	Customized
Other Material	Stainless/Carbon Steel
Size	Customized
Standard	DIN 975 / DIN 976 / GB / ISO / ASTM A193
Application	Machinery, Chemical Industry, Building
Surface Treatment	Zinc,Yellow,Black,Request
Transport Package	Carton+Pallet
Specification	M6-M70
Origin	Hebei, China
HS Code	7318159090
Package Size	10.00cm * 10.00cm * 10.00cm
Package Gross Weight	0.500kg
Lead Time	5 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces)
Product Name	Double-Ended Stud
Metric size	M6 × 70 mm Inch size: 1/4" × 2-3/4" Customized sizes are available.
Finish	Polishing, Black Oxide, Zinc Plating, Hot-dip Galvanizing, Bluing, etc.
Samples	Samples are complimentary, delivery charges apply
Package	Inner bag + Master carton + Wooden pallet + Stretch film, with desiccant & edge protectors as needed.
Payment	T/T, L/C
Shipping Port	Tianjin Port, Qingdao Port
Inspection	100% QC Steps Inspect Before Shipment
Category	Double-End & Tap-End Studs

Technical parameters

Product Name: Double-Ended Stud

Size: Metric size: M6 × 70 mm Inch size: 1/4" × 2-3/4" Customized sizes are available.

Material: Stainless Steel 201 304 316 430 & Carbon Steel

Grade: A2-70, A4-70, A4-80 & 8.8, 10.9, 12.9, etc.

Finish: Polishing, Black Oxide, Zinc Plating, Hot-dip Galvanizing, Bluing, etc.

Standard: GB, DIN, ISO, ANSI/ASTM, BS, BSW, etc

Samples: Samples are complimentary, delivery charges apply

Package: Inner bag + Master carton + Wooden pallet + Stretch film, with desiccant & edge protectors as needed.

Payment: T/T, L/C

Shipping Port: Tianjin Port, Qingdao Port

Inspection: 100% QC Steps Inspect Before Shipment

Description

Grade 8.8 Black Phosphated Double End Welding Stud Bolts Structural Connection Hardware Group for Engine Blocks is part of our double-end & tap-end studs range (Threaded Rods & Studs).

Key details

Standard: DIN 975 / DIN 976 / GB / ISO / ASTM A193
Material: Carbon Steel
Grade: A
Size: Customized
Length: Customized
Surface Treatment: Zinc,Yellow,Black,Request
Finish: Polishing, Black Oxide, Zinc Plating, Hot-dip Galvanizing, Bluing, etc.
Application: Machinery, Chemical Industry, Building

Available configurations include material, surface finishing, grade, customized and length. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 10,000 pieces at US$0.0012 – 0.0048 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 Grade 8.8 Black Phosphated Double End Welding Stud Bolts Structural Connection Hardware Group for Engine Blocks?

The listed minimum order is 10,000 pieces, at US$0.0012 – 0.0048 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$0.0048 for 10,000–49,999 pieces; US$0.0012 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Grade 8.8 Black Phosphated Double End Welding Stud Bolts Structural Connection Hardware Group for Engine Blocks?

Standard: DIN 975 / DIN 976 / GB / ISO / ASTM A193; Material: Carbon Steel; Grade: A; Size: Customized; Length: Customized; Surface Treatment: Zinc,Yellow,Black,Request. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, surface finishing, grade, customized and length. 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 double-end & tap-end studs are available?

The Double-End & Tap-End Studs category lists 3,053 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/threaded-rods-studs/double-end-tap-end-studs/

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

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US$0.0012 – 0.0048MOQ 10,000 piecesGet a quote WA