Q&A
For an RFQ, please provide the drawing or spec description with the information of dimensions, material, mechanical properties, finish / surface treatment, quantity, packing method and the delivery term, etc.
For example,
DIN 933 Hex Bolt F/T M8-P1.25 x 60, Class 4.8, Zinc Plated Cr3+ 5um Min., 300Mpcs, FOB KaohsiungTo describe the dimensions of a bolt, it's proposed to consider the following three main elements-
1. Head Style and Head Size
Head Style: Hex Head, Flange Head, Round Head, Countersunk / Flat HeadHead Size: OD x L or AF x L
OD = Outer Diameter of the Round Head
AF = Across Flat for the Hex Head
L = the Length of the Head
3. Thread Diameter, Pitch or TPI and the Length
For example,
M8-P1.25 x 80 Round Head Square Neck Bolt, Partial Threaded with Undersized Body
3/4-6 x 4" Fitting Up (Speed) Bolts, Fully-Threaded
Carbon Steel and Alloy Steel: around 2000KGS
Stainless Steel: around 1500KGS
Major Diameter: M8 ~ M24 (5/16" ~ 1")
Length: 16mm ~ 200mm (5/8" ~ 8")
* experienced team
* prompt response and on-time delivery services
* high quality products
Our Expertise, Your Best Choice, ZI EA Factory.
Main Products:
★ Hex Bolts ★ Fitting Up (Speed) Bolts
★ Flange Bolts ★ Hex Head Stud Bolts
★ Plow Bolts ★ Countersunk Flat Head Cap Screws
★ Carriage Bolts ★ Round Head Ribbed Neck Bolts
★ Track Bolts ★ Tiller Tine Bolts
★ Coil Thread Bolts ★ Other Standard and Special Bolts
For over 40 years, ZI EA Factory has been the specialist in fasteners.
We offer standard, modified and customized screws and bolts
ranging from M6 to M24 (L: 16-300mm).
Material: Carbon Steel & Alloy Steel.
Yes, we attend exhibitions such as-
Taiwan International Fastener Show
22-24 April 2026 / Kaohsiung Exhibition Center / Kaohsiung, Taiwan
Fastener Fair Global
25-27 March 2025 / Messe Stuttgart / Stuttgart, Germany
International Fastener Expo
10-11 Oct. 2023 / Mandalay Bay Convention Center / Las Vegas, USA
For more details, please visit 【ZI EA Factory Exhibition】