SIST EN ISO 1207:2011

SIST EN ISO 1207:2011 is the Slovenian standard published by SIST that adopts EN ISO 1207:2011, which is identical to ISO 1207:2011. It specifies slotted cheese head screws of product grade A with threads from M1,6 to M10 inclusive, so it is used when designing, specifying, checking, or ordering these screws.

What does SIST EN ISO 1207:2011 specify?

SIST EN ISO 1207:2011 defines the characteristics of slotted cheese head screws of product grade A across a specific metric thread range. In practice, it tells users what sizes, geometry, material/property combinations, finishes, tolerances, and inspection references apply to these screws.

The document is organized into five clauses: Scope, Normative references, Dimensions, Specifications and reference International Standards, and Designation. It ends with a bibliography that cites ISO 888 as a related reference.

What are the key requirements of SIST EN ISO 1207:2011?

Dimensional range and screw form

Clause 1 limits the standard to screws with threads from M1,6 to M10 inclusive. That matters because a buyer or designer can check quickly whether a screw size falls inside the standard before using the rest of the document.

Clause 3 and Figure 1 define the screw shape and the dimensional symbols used in the table. The standard says the shank diameter is approximately equal to the pitch diameter, or may be equal to the major thread diameter, and the edge may be rounded or flat. For users, this fixes the acceptable geometry and avoids ambiguity in drawings and inspection.

Lengths, thread engagement, and dimensions

Table 1 gives the dimensional series, including head and slot-related dimensions, for each thread size. It also marks preferred lengths and lengths that should be avoided if possible. That helps purchasing and stock control choose common sizes first.

Table 1 also states that screws with nominal lengths above the discontinuous line are threaded up to the head. In practice, this tells the manufacturer and inspector where the thread must continue along the shank for longer screws.

Clause 3 links the symbols and descriptions of dimensions to ISO 225, and the as-rolled end is identified as RL in accordance with ISO 4753. That keeps the drawing and order language aligned with other fastener standards.

Materials, properties, tolerances, finishes, and inspection

Clause 4 and Table 2 connect the screw to the applicable material and performance standards. For steel, the table points to ISO 8992 for general requirements and ISO 898-1 for mechanical properties, with property classes 4.8 and 5.8 listed. For stainless steel, it points to ISO 3506-1 with A2-50 and A2-70, and for non-ferrous metal it refers to ISO 8839.

Table 2 also fixes the thread tolerance class at 6g and links thread tolerances to ISO 261, ISO 965-2, and ISO 965-3. This matters when matching the screw to a tapped hole or checking fit.

Surface treatment and acceptance are also tied to other standards: ISO 4042 for electroplating, ISO 16048 for passivation, ISO 10683 for non-electrolytically applied zinc flake coatings, ISO 6157-1 for surface discontinuities, ISO 4759-1 for product tolerances, and ISO 3269 for acceptance inspection. In practice, this tells suppliers and buyers which quality controls and finishes are acceptable.

Clause 5 gives the designation format. The example shows how to order or identify a screw by standard number, thread size, nominal length, and property class.

What terms does SIST EN ISO 1207:2011 define?

• Product grade A - The product grade used by this standard for the screws it covers.
• Property class - The mechanical performance category used to specify the screw material, such as 4.8, 5.8, A2-50, or A2-70.
• Acceptance inspection - The inspection stage used to decide whether supplied fasteners meet the order and standard requirements.
• Passivation - A surface treatment referenced for corrosion-resistant stainless-steel fasteners.
• Electroplated coatings - Metallic coatings applied by electroplating, covered here by ISO 4042.
• Non-electrolytically applied zinc flake coatings - A coating type referenced for fasteners in ISO 10683.
• As-rolled end (RL) - The permitted threaded end condition referenced from ISO 4753.

Who uses SIST EN ISO 1207:2011?

SIST EN ISO 1207:2011 is used by fastener manufacturers, machine and product designers, purchasing teams, quality managers, and inspection staff. It is relevant wherever slotted cheese head screws are specified, sourced, manufactured, or checked against drawing requirements.

It is especially useful in general engineering and metal fastener supply chains, where teams need a common way to state size, thread, finish, tolerance, and acceptance criteria. The standard reduces back-and-forth between design, procurement, and inspection by giving one shared specification language.

What changed in SIST EN ISO 1207:2011 from the previous edition?

SIST EN ISO 1207:2011 is the third edition and is technically revised. It supersedes EN ISO 1207:1994, and the ISO edition cancels and replaces ISO 1207:1992.

Which standards are used with SIST EN ISO 1207:2011?

• ISO 225 - symbols and descriptions of dimensions
• ISO 261 - general plan for ISO metric screw threads
• ISO 898-1 - mechanical properties for carbon steel and alloy steel fasteners
• ISO 965-2 and ISO 965-3 - thread tolerances and deviations
• ISO 3269 - acceptance inspection
• ISO 3506-1 - mechanical properties for corrosion-resistant stainless steel fasteners
• ISO 4042 - electroplated coatings
• ISO 4753 - ends of parts with external ISO metric thread
• ISO 4759-1 - tolerances for fasteners of product grades A, B and C
• ISO 6157-1 - surface discontinuities
• ISO 8839 - mechanical properties for non-ferrous metal fasteners
• ISO 8992 - general requirements for bolts, screws, studs and nuts
• ISO 10683 - non-electrolytically applied zinc flake coatings
• ISO 16048 - passivation of corrosion-resistant stainless-steel fasteners
• ISO 888 - cited in the bibliography for nominal lengths and thread lengths of general purpose bolts

What does the SIST EN ISO 1207:2011 document contain?

The document contains Figure 1, which shows the screw form, and Table 1, which gives the dimensional limits and preferred lengths by thread size. Table 2 links the screw to materials, property classes, thread tolerance class 6g, coatings, surface quality, and acceptance inspection references.

Clause 5 gives a worked designation example, which is useful for writing purchase descriptions and drawings in a consistent format. The document therefore serves design, manufacturing, procurement, and inspection tasks for slotted cheese head screws.