Fastener FAQ

Common questions before purchasing fasteners, covering selection, material, surface finish and custom manufacturing.

Specification selection Material and surface Custom delivery

Frequently Asked Questions

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Please confirm the application position, load, connection thickness and working environment first, then match diameter, length, thread pitch, material, strength grade, surface finish and applicable standard. Drawings, photos or old samples help us quote more accurately.
Hot-dip galvanizing and Dacromet are common choices for outdoor applications. For humid, coastal or chemical environments, stainless steel 304/316 or higher corrosion-resistant solutions may be better.
Please provide drawings or 3D files, material, dimensions, tolerance, grade, surface treatment, packing method and quantity. If drawings are not ready, samples or installation photos can also be reviewed.
Bolts and nuts should match nominal diameter, thread pitch, thread type, standard and strength grade. High-strength connections should also use suitable washers and anti-loosening solutions.

Still need confirmation?

Send drawings, specifications, quantity and application. Our technical and sales teams will confirm the solution together.

Fastener Knowledge Tips

Quickly understand common materials, grades, finishes and assembly notes.

01

Check the application

Confirm load, corrosion, vibration, installation space and working environment first.

02

Verify standard and size

Diameter, length, pitch, strength grade and standard must match the application.

03

Choose the right finish

Outdoor or humid use may require zinc plating, hot-dip galvanizing, Dacromet or stainless steel.

04

Confirm thread fit

Bolts, nuts and washers should match nominal diameter, pitch, thread form and standard.

05

Keep drawings or samples

For custom parts, drawings, samples or installation photos reduce communication errors.

06

Match strength grades

High-strength assemblies need compatible bolts, nuts and washers to avoid loosening or failure.

07

Plan anti-loosening

Vibration applications may need spring washers, lock nuts, double nuts or thread locker.

08

Confirm export packing

Bulk or export orders should define cartons, pallets, moisture protection and labels early.

Still looking for the right answer?

Tell us the application, specification and quantity. The Wohe team will confirm selection and quotation one-to-one.