Shanghai Zinsn Industrial Co., Ltd. · Shanghai & Haiyan, China +86 21 6487 6003 [email protected]

Custom Spec & Build to Drawing

Send a drawing, a sample, or even a photo from the job site. We reverse-engineer it and quote in 24 hours.

Overview

How it works

A surprising share of enquiries start with a screw in a padded envelope and no paperwork at all. Somebody's supplier discontinued a line, or a machine was built in 1994 and the fastener was never documented. That is a normal starting point for us.

Quality laboratory measuring a fastener sample under a microscope

What you get

The detail that matters

From a drawing

Dimensioned drawings are quoted directly. Tell us which standard governs — DIN, ISO, ANSI or your own — and the inspection report follows it.

From a physical sample

Samples are measured in our own laboratory: dimensions, hardness, thread form and finish.

From a photograph

A clear photo with a scale reference is often enough to identify the family and start the conversation.

Sample before tooling

For new specifications we ship physical samples for your approval before tooling and production — within 5 working days of approval.

Other ways we work

Order process

  1. Inquiry review — Within 24 hours, our technical sales team reviews your requirements and confirms feasibility.
  2. Quotation — You receive a detailed quote: pricing, lead-time, packaging, MOQ and Incoterms.
  3. Sample approval — For new specs we ship physical samples for your approval before tooling and production.
  4. Production & QC — Your order is scheduled into the line; in-process and final QC reports are shared.
  5. Shipping — FOB Shanghai or Ningbo by default; CIF or DDP available. Documentation handled in-house.
  6. After-sales — Your assigned account manager handles re-orders, claims and new product development.

Send a drawing, sample or photo

One email or one WhatsApp message is enough to start. We reply within one business day.