Standards
1. Casting Standards
ISO 8062-3:2023
Geometrical product specifications (GPS) — Dimensional and geometrical tolerances for moulded parts — Part 3: General dimensional and geometrical tolerances and machining allowances for castings.
This standard specifies general dimensional and geometrical tolerances and machining allowance grades for castings.
It applies to all metallic castings produced by any casting process.
Tolerance Grades:
CT4–CT7: Precision castings
CT8–CT12: General commercial castings
CT13–CT16: Large or non-critical castings
2. Machining Standards
ISO 2768-1:1989
General tolerances — Part 1: Tolerances for linear and angular dimensions without individual tolerance indications.
This standard defines four tolerance classes for unmarked dimensions:
f (fine)
m (medium)
c (coarse)
v (very coarse)
It applies to external, internal, diameter, radius, and angular dimensions of machined parts.
ISO 2768-2:1989
General tolerances — Part 2: Geometrical tolerances for features without individual tolerance indications.
This standard specifies geometrical tolerances for form, orientation, and location for features without individual tolerance indications.
3. Fastener Standards
ISO 3506-1:2020
Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 1: Bolts, screws and studs
This standard defines property classes for stainless steel fasteners including A2-50, A2-70, A4-70, A4-80, and specifies mechanical requirements, test methods, and hardness values.
ISO 898-1:2013
Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs.
Covers property classes: 4.8, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9.
ISO 6506-1:2014
Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6507-1:2018
Metallic materials — Vickers hardness test — Part 1: Test method
4. Forging Standards.
ISO 7801:1984
Steel forgings — General tolerances on dimensions This standard specifies general dimensional tolerances for open die and closed die steel forgings.
ISO 7802:1984
Steel forgings — General tolerances on form and position
This standard defines general geometrical tolerances for steel forgings, including straightness, flatness, perpendicularity and parallelism.
Tolerance Grades:
FT1–FT4: Precision forgings
FT5–FT8: General commercial forgings
FT9–FT12: Large and non-critical forgings
5. Rubber Standards
ISO 3302-1:2014
Rubber — Tolerances for products — Part 1: Dimensional tolerances
This standard specifies dimensional tolerance classes for moulded, extruded, and calendered rubber products.
ISO 3601-1:2012
Fluid power systems — O-rings — Part 1: Inside diameters, cross-sections, tolerances and designation codes
ISO 37:2017
Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 23529:2018
Rubber — General procedures for preparing and conditioning test pieces for physical test methods
6. Plastic Products Standards
ISO 2768-1:1989
General tolerances for linear and angular dimensions without individual tolerance indications (applied to injection-molded parts)
ISO 17740
Plastics — Injection-moulded parts — General tolerances and acceptance conditions
ISO 15259
Plastics — Tolerances for moulded and extruded products
ISO 527
Plastics — Determination of tensile properties
ISO 178
Plastics — Determination of flexural properties
ISO 180
Plastics — Determination of Izod impact strength
7. 3D Printing / Additive Manufacturing Standards
ISO/ASTM 52900
Additive manufacturing — General principles — Fundamentals and vocabulary
ISO/ASTM 52901
Additive manufacturing — General principles — Requirements for purchased AM parts
ISO/ASTM 52910
Additive manufacturing — Design requirements
ISO 17296-1
Additive manufacturing — General principles — Part 1: Overview and process principles
ISO 17296-2
Additive manufacturing — General principles — Part 2: Overview of feedstock and quality criteria
