Standard & made-to-drawing parts
Checked before shipping
Air, sea & express delivery

Flat Square Head Bolt T Bolt Zinc Coating

Updated 2026-11-04 · Markdown version

Model no. GB, DIN, ISO

US$0.07683,000–9,999 pieces

US$0.070810,000–29,999 pieces

US$0.062430,000+ pieces

MOQ 3,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Head Style: Square
Standard: DIN, ANSI, GB
Grade: 8.8
Finish: Blue-White Zinc Plated
Size: M3-M30
Thread: Unc,Unf
Color: Silver, White, Black, Yellow, etc.

Get a quote WhatsApp

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
Type	Square Head
Model NO.	GB, DIN, ISO
Connection	Common Bolt
Head Style	Square
Standard	DIN, ANSI, GB
Grade	8.8
Application	Machinery, Chemical Industry, Environmental, Building
Finish	Blue-White Zinc Plated
Size	M3-M30
Samples	Free Samples When Is in Stock
Drawing	Accept
Quality	100%
Thread	Unc,Unf
Delivery Time	5-20 Days
Color	Silver, White, Black, Yellow, etc.
Stock	Depend on The Size and Requirement
Equipments	CNC Lathe, Processing Center, Miller, etc
Transport Package	Cartons+Wooden Pallets+Plastic Bag
Specification	280250180
Origin	China
HS Code	7318159090
Production Capacity	3000000 Pieces/ Month
Package Size	27.50cm * 25.00cm * 25.00cm
Package Gross Weight	20.000kg
Lead Time	3 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces)
Category	T-Bolts & T-Slot Bolts

Technical parameters

Standard	GB,ISO,ANSI
Diameter	M3-M30
sample service	Free sample but freight cost is paid by customers(when sample is in stock) sample fee(when samples need to be customized)
Material	SS304,SS316,SS2205,SS2507, Carbon steel.
MOQ	1000pcs
Surface treatment	Plain, black oxide, HDG, Zinc, etc.
Package	Plastic bag, Boxes and cartons, Pallets, Customized
Price terms	EXW, FOB, CIF, etc.
Payment terms	T/T, Paypal, L/C, Western union, etc.
Certifications	ISO 9001
Note	Free Samples could be provided for standard fastener

Description

Flat Square Head Bolt T Bolt Zinc Coating is part of our t-bolts & t-slot bolts range (Bolts).

Key details

Type: Square Head
Standard: DIN, ANSI, GB
Material: Carbon Steel
Grade: 8.8
Size: M3-M30
Thread: Unc,Unf
Head Style: Square
Finish: Blue-White Zinc Plated

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 3,000 pieces at US$0.0624 – 0.0768 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 Flat Square Head Bolt T Bolt Zinc Coating?

The listed minimum order is 3,000 pieces, at US$0.0624 – 0.0768 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$0.0768 for 3,000–9,999 pieces; US$0.0708 for 10,000–29,999 pieces; US$0.0624 for 30,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Flat Square Head Bolt T Bolt Zinc Coating?

Type: Square Head; Standard: DIN, ANSI, GB; Material: Carbon Steel; Grade: 8.8; Size: M3-M30; Thread: Unc,Unf. 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 t-bolts & t-slot bolts are available?

The T-Bolts & T-Slot Bolts category lists 593 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/t-bolts-t-slot-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$0.0624 – 0.0768MOQ 3,000 piecesGet a quote WA