• View PDF
    Standard
  •   0091-22-66157017
  •   info@torqbolt.com
    • Home
    2. ISO 4035 Hexagon Thin Nuts (Chamfered) Dimensional Standard

    ISO 4035 Hexagon Thin (Jam) Nuts | Dimensions

    ISO 4035 Hexagon Thin Nut frameworks provide definitive dimensional benchmarks for chamfered hexagon thin nuts, widely utilized as jam nuts.
    The rigorous ISO 4035 standard establishes the global dimensional benchmarks for chamfered hexagon thin nuts, officially recognized in technical documentation as "Style 0" nuts, and almost universally referred to in field applications as metric jam nuts.
    Covering an extensive nominal size range from micro M1.6 electronics fasteners to massive M64 industrial formats, these fasteners feature a significantly and intentionally reduced height (m) profile compared to standard ISO 4032 Style 1 nuts.
    Because they are geometrically classified as thin nuts, they inherently lack the thread shear volume required to carry the full tensile load of a high-strength bolt.
    Consequently, they are assigned distinct, lower-tier property classes such as 04 and 05 for carbon steel, or A2-035/A4-035 for austenitic stainless steel variants.
    The primary engineering application for the ISO 4035 nut is decisively twofold.
    First, they are routinely deployed in tight spatial envelopes—such as inside hydraulic valve assemblies, compact electric motor housings, or delicate sensor mounts—where a standard-height nut would physically exceed the available clearance boundary.
    Second, and most frequently in heavy industry, they act as the secondary lock nut in a multi-nut assembly.
    When threaded onto a bolt and properly torqued in sequence against a primary nut, the ISO 4035 nut induces a severe axial thread interference fit, locking the two nuts together and securing the assembly against intense harmonic vibrations.
    Crucially, from an SEO search intent and engineering transition standpoint, ISO 4035 serves as the direct global replacement for the legacy German DIN 439 Part 2 standard.
    Similar to the DIN 934 to ISO 4032 transition, this modernization shift includes critical, non-interchangeable alterations to the Width Across Flats for several highly common metric sizes.
    The standard WAF for M10, M12, M14, and M22 sizes were significantly adjusted to harmonize with international wrenching standards, and the nominal M1.8 diameter was completely omitted from the new ISO framework.
    Because of these precise dimensional changes, legacy wrenches or automated robotic socket drives perfectly calibrated for DIN 439 Part 2 will fail to engage an ISO 4035 M10 nut correctly.
    Thus, providing exact access to this dimensional data is indispensable for modern retrofit operations, saving engineers from catastrophic assembly line stoppages.

    ISO 4035 Hexagon Thin Nuts
    Hexagon Thin Nuts Chamfered

    ISO 4035 Hexagon Thin Nuts Dimensions

    Standard Metric Thread Dimensions (M1.6 to M52)
    Thread Size (d) Pitch (P) Inner Diameter (da) Washer Face (dw) Width Across Corners (e) Nut Thickness (m) Min Thickness (m´) Width Across Flats (s)
    Min. Max. Min. Min. Max. Min. Min. Max. Min.
    M1.6 0.35 1.6 1.84 2.4 3.48 1 0.75 0.6 3.2 3.08
    M1.8 0.35 1.8 2.06 2.7 3.82 1.1 0.85 0.68 3.5 3.38
    M2 0.4 2 2.3 3.1 4.32 1.2 0.95 0.76 4 3.82
    M2.5 0.45 2.5 2.9 4.1 5.45 1.6 1.35 1.06 5 4.82
    M3 0.45 3 3.45 4.6 6.01 1.8 1.55 1.24 5.5 5.32
    M3.5 0.6 3.5 4 5.1 6.58 2 1.75 1.4 6 5.82
    M4 0.7 4 4.6 5.9 7.66 2.2 1.95 1.56 7 6.78
    M5 0.8 5 5.75 6.9 9.79 2.7 2.45 1.96 8 7.78
    M6 1 6 6.75 8.9 11.05 3.2 2.9 2.32 10 9.78
    M8 1.25 8 8.75 11.6 14.38 4 3.7 2.96 13 12.73
    M10 1.5 10 10.8 15.6 18.9 5 4.7 3.76 17 16.73
    M12 1.75 12 13 17.4 21.1 6 5.7 4.56 19 18.67
    M14 2 14 15.1 20.5 24.49 7 6.42 5.14 22 21.67
    M16 2 16 17.3 22.5 26.75 8 7.42 5.94 24 23.67
    M18 2.5 18 19.5 24.9 29.56 9 8.42 6.74 27 26.16
    M20 2.5 20 21.6 27.7 32.95 10 9.1 7.28 30 29.16
    M22 2.5 22 23.8 29.5 35.03 11 9.9 7.92 32 31
    M24 3 24 25.9 33.2 39.55 12 10.9 8.72 36 35
    M27 3 27 29.2 38 45.2 13.5 12.4 9.9 41 40
    M30 3.5 30 32.4 42.7 50.85 15 13.9 11.1 46 45
    M33 3.5 33 35.6 46.6 55.37 16.5 15.4 12.3 50 49
    M36 4 36 38.9 51.1 60.79 18 16.9 13.5 55 53.8
    M39 4 39 42.1 55.9 66.44 19.5 18.2 14.6 60 58.8
    M42 4.5 42 45.4 60 71.3 21 19.7 15.8 65 63.1
    M45 4.5 45 48.6 64.7 76.95 22.5 21.2 17 70 68.1
    M48 5 48 51.8 69.4 82.6 24 22.7 18.2 75 73.1
    M52 5 52 56.2 74.2 88.25 26 24.7 19.8 80 78.1

    Related A194 Grades & References

    ISO 4035 hexagon thin (jam) nuts are used as locknuts paired with standard ISO 4032 nuts. For Style 2 high nuts see ISO 4033; for inch-series jam equivalent see ASME B18.2.2 hex jam nuts. Common A194 grades: Grade 2H, Grade 8M. Full specification: ASTM A194 PDF.

    Frequently Asked Questions

    What is ISO 4035?

    ISO 4035 is the international standard for metric hexagon thin nuts (jam nuts), with reduced height compared to standard ISO 4032 hex nuts. Sizes range from M1.6 to M64. ISO 4035 supersedes DIN 439.

    When are ISO 4035 thin nuts used?

    ISO 4035 thin nuts are used as locknuts (in a jam-nut configuration) or in space-restricted applications where standard ISO 4032 thickness cannot fit. They are typically tightened against another nut or surface to create friction lock.

    What is the difference between ISO 4035 and ISO 8675?

    ISO 4035 covers metric coarse-thread thin nuts; ISO 8675 covers metric fine-thread thin nuts. Both have the same dimensional profile but use different thread pitches.

    Specifications
    Surface Treatments
    Certifications
    About Us
    Questions? Contact us.
    Showcase of our Microsites.
    Satisfaction Survey

    survey

    TUVRheinland CRETIFIED

    © TorqBolt P(Ltd) · Built with in INDIA.