English specification desk How guides are written

Home / Hardware / How to specify a Deadbolt

Hardware

How to specify a Deadbolt

What to put on an RFQ for Deadbolt: the ratings, documents, and constraints that change the quote.

25 Oct 2026 · 3 min read · Tradinor Desk

Specification points for DeadboltTRADINOR · FIGUREWhat to lock for DeadboltCoatingQuantity and lotSize and threadMaterial
Put these on the RFQ for Deadbolt before you compare prices.

A buyer searching for Deadbolt is usually trying to stop a bad substitute. A fastener or fitting is specified by size, material, strength, and the corrosion around it. The notes below are selection criteria for a Deadbolt. They are not a catalog promise. Confirm every rating on the current datasheet, drawing, or test report for the revision you will receive.

What has to be true of Deadbolt

A fastener or fitting is specified by size, material, strength, and the corrosion around it. For a Deadbolt, start from the duty, then the interface to the rest of the machine or the room, then the document that proves the claim. A lower price that leaves one of those blank is a different product.

Deadbolt is easy to confuse with Drawer Slide. If the quote could be read as either, add the line that separates them: the rating, the fitment, or the standard named below. Link the drawing number to that line so receiving inspection can reject the wrong one.

Numbers that change the quote

Line What to write for Deadbolt
Coating Zinc, galvanize, or another coat matched to the environment.
Quantity and lot Batch traceability if the assembly is safety related.
Size and thread Diameter, pitch, length, and the standard of the thread.
Material Steel grade, stainless alloy, or brass, not only the color.
Strength Property class or a stated tensile figure.
Head and drive Head style and the driver the line already uses.

How to compare two offers

Lay both quotes for Deadbolt on one sheet and line up coating, quantity and lot, and size and thread. If a cell is empty, the offer is not finished. Ask for the missing line in writing. When those match, the honest difference is lead time, the test evidence, and who carries the warranty. Do not average a fully specified Deadbolt with a cheaper line that omitted coating.

Documents worth having before the deposit

Ask for the material certificate when the joint is structural. The file should name Deadbolt and the revision, not only the supplier’s homepage. A factory quality certificate such as ISO 9001 can sit beside that file. It does not replace it.

Failures that show up after delivery

  • Substituting a similar head with a lower property class.
  • Choosing a coating that the chemical on site strips.
  • Leaving thread pitch off the order.

On a Deadbolt, the expensive version of the first mistake is discovering it after the goods are in the crate. Put the rejection condition in the purchase order while the supplier can still restate the offer.

A worked RFQ line

Use this shape, then replace the brackets with your duty: “Deadbolt — Write size, thread, material, property class, and coating.” That sentence is a template, not a rating of any brand. If a supplier’s datasheet uses different units, convert them onto this sheet so the next offer can be compared.

Where words like IP67 belong

Searches often add a constraint to Deadbolt: IP67, or waterproof / IP65. Keep those on this page. IP67 is dust-tight plus a defined temporary immersion. It is not a rating for living underwater, and it says nothing about sunlight or salt. IP65 in IEC 60529 means dust-tight and protected against water jets. Write that code if hoses are the real exposure. The word waterproof alone does not name a test. If you need a third constraint, add it as another line on the same drawing. A second URL that only swaps the adjective does not give a buyer a second fact.

Related in this section: how to specify Drawer Slide.

Questions buyers actually ask

What should an RFQ for Deadbolt include?

Write size, thread, material, property class, and coating.

Is a cheaper Deadbolt the same part?

Only if coating, quantity and lot, and the documents match. A missing line is a different offer.

Do waterproof, OEM, or IP words need their own page?

No. For Deadbolt they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.