A useful fastener specification identifies the exact combination you need. Read the product reference, dimensions, material and mechanical requirements together before sending an enquiry.
Start with the product reference
Record the product name, standard number and required edition, or the controlling drawing and revision. If a drawing and a catalogue description differ, clarify which requirement applies before approving the quotation.
DIN 933 guide · ISO 4017 guide
Read the dimensions separately
- Thread diameter and pitch: include both where the specification requires them.
- Length and thread coverage: use the measurement defined by the applicable product standard or drawing.
- Units: state metric or inch units; keep inch fractions as written in the source.
- Other dimensions: include head, washer, nut or installation dimensions relevant to the part.
Keep material and strength distinct
Record the material designation and required property class or other mechanical requirements as separate fields. If a shorthand label is unclear, include the source document and ask for confirmation.
304 material guide · 316 material guide
Use the product specification tables
For example, the DIN 933 stainless steel product page groups catalogue entries so you can look up a listed material, grade, diameter and length combination. Select details from the same group; do not combine unrelated options into an assumed available size.
Listed specifications are catalogue references. Stock and the offered specification are confirmed when we quote.
Finish the purchasing description
Add the finish or treatment, quantity, delivery destination and required inspection or material documents. Mark missing information as “please confirm” and attach the latest drawing or list.
Use the RFQ checklist to bring the details together, or browse all product families.