DIN 97 1975-03 PDF

Full title and description

STB DIN 97 1975-03 — Slotted countersunk (flat) head wood screws. Technical specification giving dimensional and basic delivery requirements for slotted, countersunk-head wood screws (designation, key dimensions and tolerances) as published under DIN number 97 in March 1975.

Abstract

This historic edition of DIN 97 (published March 1975) defines the form, head geometry and key dimensional limits for slotted countersunk (flat) head wood screws used in general woodworking applications. The document is a short technical specification (original edition: 2 pages) intended to standardize head diameter, head height, slot width/depth and nominal thread diameters for metric wood screws so manufacturers and users share common dimensional and designation conventions.

General information

• Status: Withdrawn (historic edition; later revisions of DIN 97 were published).
• Publication date: March 1, 1975 (edition designation 1975-03).
• Publisher: Deutsches Institut für Normung (DIN) — German Institute for Standardization.
• ICS / categories: 21.060.10 (Bolts, screws, studs / Fasteners).
• Edition / version: DIN 97:1975-03 (original 1975 edition).
• Number of pages: 2 (short technical specification).

Scope

The 1975 edition specifies dimensional requirements and designation rules for slotted, countersunk (flat) head wood screws with metric nominal diameters in the small range used in woodworking and assembly applications. It covers head diameter and height limits, slot geometry (width/depth), minimum thread length and other essential dimensional parameters required for interchangeability and correct seating of countersunk heads. (This edition is a historic document; later DIN revisions expanded ranges and updated tolerances.)

Key topics and requirements

• Designation and naming: standard designation format for slotted countersunk head wood screws (DIN 97).
• Head geometry: specified head diameter (dk) and maximum head height (k) per nominal thread diameter.
• Slot dimensions: minimum/maximum slot width and slot depth (to ensure tool engagement).
• Thread and length ranges: nominal diameters and customary length ranges for wood-screw applications.
• Material and surface notes: typical materials referenced (carbon steel, stainless steel, brass) and common coatings indicated informally though detailed mechanical properties are covered in later revisions.

Typical use and users

Used as a manufacturer and procurement reference where metric slotted countersunk head wood screws are produced or specified. Typical users include fastener manufacturers, woodworking and furniture producers, technical buyers, toolmakers and maintenance engineers who need standardized screw head and slot dimensions for production, tooling and assembly. For current production tolerances and additional requirements (materials, coatings, mechanical properties) users should consult the most recent DIN 97 revision.

Related standards

Standards and documents commonly referenced with or that replaced/updated this edition include later editions of DIN 97 (e.g., DIN 97:1986-12; DIN 97:2010-12; subsequent DIN 97 editions up to the 2016 revision), related fastener standards for thread and tip form (e.g., DIN 7998 for wood-screw threads) and other national/ISO fastener specifications for pan/raised/countersunk head screws.

Keywords

DIN 97, slotted countersunk head, flat head wood screw, wood screw, screw dimensions, head diameter, slot width, fasteners, metric screws.

FAQ

Q: What is this standard?

A: DIN 97:1975-03 is the March 1975 edition of the German standard that defined dimensional and designation requirements for slotted countersunk (flat) head wood screws.

Q: What does it cover?

A: It covers head geometry (diameter and height), slot dimensions, nominal thread diameters and typical length ranges for slotted countersunk wood screws to ensure interchangeability in woodworking applications.

Q: Who typically uses it?

A: Fastener manufacturers, woodworking and furniture manufacturers, purchasers and engineers specifying or producing slotted countersunk wood screws historically used this document; present-day users should refer to later DIN 97 revisions for current production requirements.

Q: Is it current or superseded?

A: The 1975 edition is withdrawn and has been superseded by later revisions of DIN 97 (notably 1986, 2010 and later revisions). For up-to-date requirements consult the latest DIN 97 edition.

Q: Is it part of a series?

A: Yes — DIN 97 is part of the family of DIN fastener standards covering various head types and forms (e.g., DIN 95, DIN 96, DIN 97, DIN 963 etc.); these standards are maintained in the DIN fasteners committee and are periodically revised.

Q: What are the key keywords?

A: Slotted countersunk head, wood screw, DIN 97, screw dimensions, fasteners, countersunk, slot width, head diameter.