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D3061-97 – Standard Test Method Technical Guide
📐 Scope and Dimensional Nomenclature
ASTM D3061-97 (Reapproved 2013) establishes voluntary industry dimensional guidelines for U.S. three-piece steel and tinplate aerosol cans, covering both straight-wall and necked-in designs. Developed in conjunction with the Can Makers Institute, this guide standardizes key measurements to ensure uniformity, quality, and compatibility across can manufacturing and filling operations. The standard defines a comprehensive set of dimensional codes — from the 1-in. (25.4 mm) opening to the necked-in body wall — allowing manufacturers to precisely specify container geometry.
| 🟦 Code | 📏 Dimension Definition | 🎯 Engineering Notes |
|---|---|---|
| A | Inside diameter of the 1-in. (25.4 mm) opening | Fixed diameter for standard valve mounting cup |
| B | Outside diameter of the 1-in. (25.4 mm) opening | Determined by curl design |
| D | Top of top double seam to bottom of bottom double seam | Primary can height (CSMA Dimension D) |
| E | Top of curl to bottom of bottom double seam | Overall structural height of the can |
| K | Outside diameter of the top double seam | Excludes crossover overlap; critical for cap fit |
| T | Width or height of the top double seam | Key quality control parameter for seam integrity |
| V | Body outside diameter of necked-in cans | Specific to necked-in designs |
| W | Top neck angle of the body wall | Defines the taper rate of the necked-in section |
💡 Unit Systems: The values stated in inch-pound units are regarded as the standard in this guide. SI units provided in parentheses throughout the standard are mathematical conversions for information purposes only and are not considered primary specifications.
⚙️ Can Body Dimensions and Height Standards
Aerosol cans are commonly specified by their sales code diameter (e.g., 202, 211, 300) and corresponding height codes, which are universally referenced within the supply chain to maintain compatibility. Straight-wall designs maintain a uniform diameter down the body, while necked-in designs feature a reduced top profile requiring additional dimensional control. The standard identifies three critical vertical height measurements, each serving a distinct engineering function for capacity, filling, and labeling operations.
| 🔑 Code | 📐 Dimension Description | ⚡ Key Specifications |
|---|---|---|
| D | Top of top double seam to bottom of bottom double seam | Industry standard height for capacity calculations; converted to the nearest whole millimeter for ISO reference |
| E | Top of 1-in. (25.4 mm) curl to bottom of bottom double seam | Represents absolute overall can height including the curl |
| F | Bottom of top double seam to top of bottom double seam | Represents the visible body wall height for labeling and graphics placement |
⚠️ Special Measurement Agreement: Dimensions marked with an asterisk (*) in the standard — specifically J (snap-lock to countersink), L (countersink width), M (snap-lock undertuck), N (snap-lock outside diameter), and P (snap-lock wall length) — do not have a rigid method of measurement defined in this guide. The specific measurement techniques and gauges for these snap-lock features must be mutually agreed upon between the supplier and the user to ensure proper mechanical lock performance.
❓ Frequently Asked Questions
🔍 What is the scope of ASTM D3061?
© 2026 TNLab — This article is a technical interpretation for reference only. The original standard as published by ASTM International takes precedence.