ASTM C1513 is the standard cited for pan head self-drilling screws (din 7504 n). This page sets out what the standard controls for this part, reproduces the dimensional table supplied against it, and notes the related designations referenced on drawings.
ASTM C1513 — Scope
ASTM C1513 specifies the dimensional requirements for pan head self-drilling screws (din 7504 n).
Material, surface condition and any performance rating are set by separate documents specific to this part family — ISO 898-1 and ISO 898-2, which govern bolt and nut property classes, do not apply here.
Tolerance & Product Grades
Tolerances for pan head self-drilling screws (din 7504 n) are given as limits on the individual dimensions in the table rather than as a fastener product grade.
Where a general-tolerance class is cited on the drawing instead, it applies to the dimensions not otherwise toleranced.
Dimensions Specified by ASTM C1513
| Head form | Point | Material and finish | Substrate | Pre-drilling |
|---|---|---|---|---|
| pan head | integrated drill tip | carbon steel, zinc plated | steel sheet and purlins | not required within the point capacity |
| pan head | integrated drill tip | carbon steel, zinc plated | metal roofing | not required within the point capacity |
| pan head | integrated drill tip | carbon steel, zinc plated | light steel structures | not required within the point capacity |
Companion Standards
ASTM C1513 controls only the geometry of pan head self-drilling screws (din 7504 n). Surface finish is governed by separate finish standards (for example ISO 4042 for electroplating), and corrosion testing by ISO 9227 (neutral salt spray). Mechanical performance is set by the standards specific to this part family, not by ISO 898-1 or ISO 898-2, which apply to bolts, screws and nuts.
When to Specify ASTM C1513
Choose ASTM C1513 for international engineering work and OEM supply where ISO standards are the contractual reference. It is the default modern specification for pan head self-drilling screws (din 7504 n).
