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The 4-point fabric inspection system is the most common way to grade fabric before cutting. This guide explains the 4-point fabric inspection system, its penalty scale and how to calculate points.
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Raw Material Quality: The Foundation of Apparel Excellence
In garment manufacturing, fabric accounts for 60% to 70% of total garment cost. Cutting into defective fabric creates a domino effect: flawed pieces migrate down the sewing line, resulting in rejected garments, high rework costs, and delayed shipping dates.
The 4-Point Fabric Inspection System (standardized under ASTM D5430 / ASQC) is the universally accepted method for visually grading woven and knitted fabrics before the cutting process begins.
How the 4-Point System Works: Penalty Point Scale
Under the 4-point system, defect penalty points are assigned solely based on the length or physical size of the flaw, regardless of its underlying cause:
| Defect Length (Warp or Weft) | Holes / Openings | Penalty Points |
|---|---|---|
| Up to 3 inches (75 mm) | Holes up to 1 inch (25 mm) | 1 Point |
| Over 3 inches up to 6 inches (150 mm) | Holes over 1 inch | 2 Points |
| Over 6 inches up to 9 inches (230 mm) | — | 3 Points |
| Over 9 inches (230 mm) | — | 4 Points |
Key Rule: No single linear yard of fabric can receive more than 4 penalty points, regardless of how many defects are clustered within that yard.
Calculating Points Per 100 Square Yards
To determine whether a fabric roll meets standard commercial grade, total points are calculated on a standardized 100-square-yard basis using this formula:
Points per 100 sq. yards = (Total Penalty Points × 3,600) / (Inspected Fabric Yards × Fabric Width in Inches)
Standard Acceptance Benchmarks:
- Woven Cottons & Synthetics: Typically accepted up to 20–28 points per 100 sq. yards.
- Denim: Accepted up to 28–35 points per 100 sq. yards.
- Knitted Fabrics: Accepted up to 30–40 points per 100 sq. yards (depending on knit structure and buyer criteria).
- Make 4-point fabric inspection system a routine, not a one-off, so quality stays steady from order to order.
Critical Fabric Defects to Watch For
- Barre / Striping: Horizontal repeating bands caused by yarn tension variation or uneven dye affinity.
- Shade Variation (Roll-to-Roll & Center-to-Selvedge): Visual color tone differences between adjacent pattern pieces.
- Skewing / Bowing: Diagonal fabric grain distortion that causes twisting in finished T-shirts and trousers after washing.
- Slubs, Knots, and Contamination: Foreign colored fibers or thick yarn segments woven or knitted into the substrate.
Ensure Fabric Compliance Before Cutting:
Veritex International performs on-site 4-Point fabric inspection, shade sorting, and fabric laboratory testing in Bangladesh textile mills and garment factories. Talk to our fabric testing specialists today.
Key takeaways on the 4-point fabric inspection system
- Good garments start with good fabric, so raw material is checked before cutting.
- The 4-point system gives each fabric defect a penalty score based on its size.
- The total is expressed as points per 100 square yards, which makes rolls easy to compare.
- Critical defects such as holes and major weaving faults deserve special attention.
- Checking before cutting avoids costly rework later in production.
How Veritex supports your quality checks
Veritex International is a garment 3rd party inspection company in Bangladesh. Veritex uses the 4-point fabric inspection system when we check fabric for buyers. Our inspectors go to the factory, check the goods against your standards and report what they find, with photos and numbers behind every decision.
Whether you need a single pre-shipment check or brand-direct quality assurance across a whole season, we plan the work around your product, quantity and shipping date. See all our garment inspection services in Bangladesh or request an inspection. Need help with 4-point fabric inspection system? Our team is ready to help.
Fabric faults are far cheaper to catch on the inspection table than on the finished garment. A short fabric check before cutting protects your cutting plan, your delivery date and your budget, and it gives you proof to discuss with the mill when a roll falls short.
Related guides
Keep reading: AQL Inspection Standards in Garment Manufacturing and Factory Technical Audit Checklist. Browse every article on the Veritex garment inspection blog.