FASTENERS ISO COMPARISON
Fastener standard comparisons shown in the following table are provided for guidance only as there are often dimensional variations between standards. The ISO Fastener Committee was formed to standardise metric fastener systems. At that time several European and Asian countries had their own designs of metric fasteners. To standardise these designs the ISO TC2 Fastener Committee was formed, the predominant metric fastener standard at the time was DIN so it became the foundational metric fastener standard system from which the eventual ISO fastener standards evolved.
DIN STANDARD SEQUENCE
| DESCRIPTION | DIN | EN | ISO | Date of current standardmodified | Title of replacement standard | Comment |
|---|---|---|---|---|---|---|
| Unhardened taper pins | 1 | 22339 | 2339 | 1992-10 | Unhardened taper pins | Nominal length redefined (with round end) |
| Parallel pins of unhardened steel and austenitic stainless steel | 7 | 22338 | 2338 | 1998-02 | Parallel pins of unhardened steel and austenitic stainless steel | Nominal length redefined (with round end) form A+C deleted |
| Slotted cheese head screws - Product grade A | 84 | 1207 | 1994-10 | Slotted cheese head screws - Product grade A | Modifications of dimensions < 2,5; dimension of slots changed; partly nominal lengths deleted; strength 8.8 deleted | |
| Slotted pan head screws - Product grade A | 85 | 1580 | 1994-10 | Slotted pan head screws - Product grade A | Thread included; dimensions of head and slot changed; strength 8.8 deleted | |
| Slotted set screws with long dog point | 94 | 1234 | 1998-02 | Split pins | No modifications of dimensions | |
| Product grade C washers, designed for use with hexagon head bolts and nuts | 126 | 7091 | 2000-11 | Plain washers - Normal series, Product grade C | Nominal sizes changed | |
| Slotted set screws with long dog point | 417 | 27435 | 7435 | 1992-10 | Slotted set screws with long dog point | No modifications of dimensions |
| Slotted headless screws with shank | 427 | 2342 | 2004-05 | Slotted headless screws with shank | ||
| Plain washers - Extra large series, product grade C | 440 | 7094 | 2000-12 | Plain washers - Extra large series, product grade C | Nominal sizes changed, nominal size 24 size "a" redefined to the maximum, square-end hole Form R omitted; (standard DIN 440 still valid) | |
| Slotted set screws with flat point | 551 | 24766 | 4766 | 1992-10 | Slotted set screws with flat point | No modifications of dimensions |
| Slotted set screws with cone point | 553 | 27434 | 7434 | 1992-10 | Slotted set screws with cone point | No modifications of dimensions |
| Hexagon nuts; Metric Thread, Type g | 555 | 24034 | 4034 | 2001-03 | Hexagon nuts - Product grade C | Width across flats according to DIN ISO 272 included; nominal diameter reduced |
| Hexagon screws, Thread Approximately to Head, Metric Thread, Type g | 558 | 24018 | 4018 | 2001-03 | Hexagon head screws - Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |
| Hexagon Bolts without Hexagon Nut - with Hexagon Nut, Type g | 601 | 24016 | 4016 | 2001-03 | Hexagon head bolts - Product grade C | Nominal size extended; width across flats according to DIN ISO 272 included |
| Mushroom head square neck bolts | 603 | 8677 | 1981-10 | |||
| Hexagon socket head cap screws | 912 | 4762 | 2004-06 | Hexagon socket head cap screws | Nominal size range changed; fine thread deleted (ISO 21269) | |
| Hexagon socket set screws with flat point | 913 | 4026 | 2004-05 | Hexagon socket set screws with flat point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted | |
| Hexagon socket set screws with cone point | 914 | 4027 | 2004-05 | Hexagon socket set screws with cone point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted | |
| Hexagon socket set screws with dog point | 915 | 4028 | 2004-05 | Hexagon socket set screws with dog point | Nominal sizes M1.4, M1.8, M14, M18 and M22 omitted | |
| Hexagon socket set screws with cup point | 916 | 4029 | 2004-05 | Hexagon socket set screws with cup point | ||
| Hexagon head screws - Product grades A and B | 933 | 24017 | 4017 | 2001-03 | Hexagon head screws - Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
| Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 24032 | 4032 | 2001-03 | Hexagon nuts, style 1 - Product grades A and B | Nominal diameter changed, the height of the nut changed partially; nuts with fine thread specified in DIN EN ISO 8673; width across flats according to DIN ISO 272 included |
| Hexagon nuts; Metric screw threads; Product grades A and B | 934 | 28673 | 8673 | 2001-03 | Hexagon nuts, style 1, with metric fine pitch thread - Product grades A and B | Nominal diameter changed, the height of the nut changed partially; nuts with regular type screw thread specified in DIN EN ISO 4032; width across flats according to DIN ISO 272 included |
| Hexagon bolts, Metric fine thread, Types m and mg | 960 | 28765 | 8765 | 2001-03 | Hexagon thin nuts (chamfered) with metric fine pitch thread - Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
| M 8x1 to M 100x4 hexagon head bolts with fine pitch thread | 961 | 28676 | 8676 | 2001-03 | Hexagon head screws with metric fine pitch thread - Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
| Slotted countersunk (flat) head screws (Countersunk heads according to ISO) | 963 | 2009 | 1994-10 | Slotted countersunk flat head screws (common head style) - Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled | |
| Slotted raised countersunk (oval) head screws (Countersunk heads according to ISO) | 964 | 2010 | 1994-10 | Slotted raised countersunk head screws (common head style) - Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 cancelled | |
| Cross recessed countersunk (flat) head screws (Countersunk heads according to ISO) | 965 | 7046 | 1994-10 | Countersunk flat head screws (common head style) with type H or type Z cross recess - Property class 4.8 | Nominal size changed; head dimension changed; thread length changed; strength 8.8 included (see Part 2); penetration depth of cross slots changed | |
| Cross recessed countersunk (oval) head screws (Countersunk heads according to ISO) | 966 | 7047 | 1994-10 | Countersunk raised head screws (common head style) with type H or type Z cross recess - Product grade A | Nominal size changed; head dimension changed; thread length changed; strength 8.8 omitted; penetration depth of cross slots changed | |
| All-metal prevailing torque type hexagon nuts | 980 | 27042 | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 - Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |
| All-metal prevailing torque type hexagon nuts | 980 | 30513 | 10513 | 1998-02 | Prevailing torque type all-metal hexagon nuts, style 2, with metric fine pitch thread - Property classes 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type hexagon nuts with non-metallic insert | 982 | 27040 | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 - Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type hexagon nuts with non-metallic insert | 982 | 30512 | 10512 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1, with metric fine pitch thread - Property classes 6, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type hexagon thin nuts with non-metallic insert | 985 | 10511 | 1998-02 | Prevailing torque type hexagon, thin nuts (with non-metallic insert) | Height of nut changed; width across flat according to ISO 272 included | |
| Clevis pins without head | 1433 | 22340 | 2340 | 1992-10 | Clevis pins without head | Some other nominal lengths defined |
| Clevis pins with head | 1434 | 22341 | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |
| Clevis pins with head | 1435 | 22341 | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |
| Clevis pins with head | 1436 | 22341 | 2341 | 1992-10 | Clevis pins with head | Only one head dimension. Some other nominal lengths defined |
| Plain washers for clevis pins; product grade A | 1440 | 28738 | 8738 | 1992-10 | Plain washers for clevis pins; product grade A | Nominal sizes changed |
| Clevis pins without head | 1443 | 22340 | 2340 | 1992-10 | Clevis pins without head | |
| Clevis pins with head | 1444 | 22341 | 2341 | 1992-10 | Clevis pins with head | Some other nominal lengths defined |
| Grooved pins - Fulllength parallel grooved, with pilot | 1470 | 28739 | 8739 | 1998-03 | Grooved pins - Full-length parallel grooved, with pilot | Nominal lengths redefined. Shear rate increased. |
| Grooved pins - Fulllength taper grooved | 1471 | 28744 | 8744 | 1998-03 | Grooved pins - Full-length taper grooved | Nominal lengths redefined. Shear rate increased. |
| Grooved pins - Half-length taper grooved | 1472 | 28745 | 8745 | 1998-03 | Grooved pins - Half-length taper grooved | Nominal lengths redefined. Shear rate increased. |
| Grooved pins - Full-length parallel grooved, with chamfer | 1473 | 28740 | 8740 | 1998-03 | Grooved pins - Full-length parallel grooved, with chamfer | Nominal lengths redefined. Shear rate increased. |
| Grooved pins - Half-length reverse-taper grooved | 1474 | 28741 | 8741 | 1998-03 | Grooved pins - Half-length reverse-taper grooved | Nominal lengths redefined. Shear rate increased. |
| Grooved pins - One-third-length centre grooved | 1475 | 28742 | 8742 | 1998-03 | Grooved pins - One-third-length centre grooved | Nominal lengths redefined. Shear rate increased. |
| Grooved pins with round head | 1476 | 28746 | 8746 | 1998-03 | Grooved pins with round head | Chamfer redefined |
| Grooved pins with countersunk head | 1477 | 28747 | 8747 | 1998-03 | Grooved pins with countersunk head | Chamfer redefined |
| Spring-type straight pins - Slotted, heavy duty | 1481 | 28752 | 8752 | 1998-03 | Spring-type straight pins - Slotted, heavy duty | Specification "non-jamming" included; chamfer redefined; partial change of dimensions |
| Parallel pins, Hardened; Tolerance Zone m6 | 6325 | 28734 | 8734 | 1998-03 | Parallel pins of hardened and martensitic stainless steel (Dowel pins) | Some other nominal lengths defined |
| High-strength hexagon head bolts with large widths across flats for structural steel bolting | 6914 | 14399-4 | 7412 | 2006-06 | High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies | |
| High-strength hexagon nuts with large widths across flats for structural steel bolting | 6915 | 14399-4 | 2006-06 | High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies | ||
| Washers for high tensile bolting in steel structures | 6916 | 14399-6 | 7416 | 2006-06 | High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers | |
| Hexagon flange bolts | 6921 | 1665 | 8102 | 1998-11 | Hexagon bolts with flange, heavy series | Dimensions partially changed; width across flats according to ISO 272; strength 12.9 omitted |
| Hexagon nuts with flange | 6923 | 1661 | 4161 | 1998-02 | Hexagon nuts with flange | Fine thread omitted to be included in a separate standard later); width across flat M10 changed |
| Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 27040 | 7040 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1 - Property classes 5, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type hexagon nuts with non-metallic insert | 6924 | 30512 | 10512 | 1998-02 | Prevailing torque type hexagon nuts (with non-metallic insert), style 1, with metric fine pitch thread - Property classes 6, 8 and 10 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type all-metal hexagon nuts | 6925 | 27042 | 7042 | 1998-02 | Prevailing torque type (all-metal hexagon nuts), style 2 - Property classes 5, 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type all-metal hexagon nuts | 6925 | 30513 | 10513 | 1998-02 | Prevailing torque type all-metal hexagon nuts, style 2, with metric fine pitch thread - Property classes 8, 10 and 12 | Height of nut changed; width across flat according to ISO 272 included |
| Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | 6926 | 1666 | 12125 | 1998-02 | Prevailing torque type hexagon nuts with flange (with non-metallic insert), with metric fine pitch thread | Width across flat M10 changed |
| Prevailing torque type - All-metal hexagon nuts with flange | 6927 | 1664 | 7044 | 1998-02 | Prevailing torque type - All-metal hexagon nuts with flange | Width across flat M10 changed |
| Spring-type straight pins - Coiled, standard duty | 7343 | 28750 | 8750 | 2007-06 | Spring-type straight pins - Coiled, standard duty | Range of nominal diameters and lengths extended. Shear range changed. |
| Spring-type straight pins - Coiled, heavy duty | 7344 | 28748 | 8748 | 2007-06 | Spring-type straight pins - Coiled, heavy duty | Range of nominal diameters and lengths extended. Shear range changed. |
| Spring-type straight pins, slotted, light duty | 7346 | 3337 | 2009-10 | Spring-type straight pins - Slotted, light duty | Specification "non-jamming" included; chamfer redefined; partial change of dimensions | |
| Drilling screws with tapping screw thread - Mechanical and functional properties | 7504 | 10666 | 2000-02 | Drilling screws with tapping screw thread - Mechanical and functional properties | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted | |
| Hexagon washers head drilling screws with tapping screw thread | 7504 | 15480 | 2000-02 | Hexagon washers head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3,9 omitted; hexagon head with collar and slot (Form L) omitted | |
| Cross recessed pan head drilling screws with tapping screw thread | 7504 | 15481 | 2000-02 | Cross recessed pan head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted | |
| Cross recessed countersunk head drilling screws with tapping screw thread | 7504 | 15482 | 2000-02 | Cross recessed countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted | |
| Cross recessed raised countersunk head drilling screws with tapping screw thread | 7504 | 15483 | 2000-02 | Cross recessed raised countersunk head drilling screws with tapping screw thread | Standard divided into five single standards (EN ISO 10666, 15480, 15481, 15482, 15483); thread ST 3.9 omitted; hexagon head with collar and slot (Form L) omitted | |
| Slotted set screws with cup point | 7976 | 1479 | 1990-08 | Hexagon head tapping screws | No modifications of dimensions | |
| Unhardened taper pins with external thread | 7977 | 28737 | 8737 | 1992-10 | Unhardened taper pins with external thread | Technical delivery conditions partially changed |
| Unhardened taper pins with internal thread | 7978 | 28736 | 8736 | 1992-10 | Unhardened taper pins with internal thread | Dimensions partially changed |
| Parallel pins with internal thread, of unhardened and austenitic stainless steel | 7979 | 28733 | 8733 | 1998-03 | Parallel pins with internal thread, of unhardened and austenitic stainless steel | Dimensions partially changed |
| Parallel pins with internal thread | 7979 | 28735 | 8735 | 1998-03 | Parallel pins with internal thread, of hardened and martensitic stainless steel | Dimensions partially changed |
| Cross recessed pan head tapping screws | 7981 | 7049 | 1990-08 | Cross recessed pan head tapping screws | Marginal change of head dimensions. Caution with automatic feed and connection systems | |
| Countersunk (flat) head tapping screws with cross recess | 7982 | 7050 | 1990-08 | Cross recessed countersunk (flat) head tapping screws (common head style) | Head dimensions and countersunk angles changed | |
| Raised countersunk (oval) head; tapping screws with cross recess | 7983 | 7051 | 1990-08 | Cross recessed raised countersunk (oval) head tapping screws | Head dimensions and countersunk angles changed | |
| Recessed raised cheese (fillister) head screws | 7985 | 7045 | 1994-10 | Pan head screws with type H or type Z cross recess - product grade A | Nominal size changed; head dimension changed; thread length changed; penetration depth of cross slots changed | |
| Hexagon socket countersunk head screws | 7991 | 10462 | 2004-06 | Hexagon socket countersunk head screws | ||
| Washers; outside diameter ˜ 3 x bolt diameter | 9021 | 7093-1 | 2000-11 | Plain washers - Large series - Part 1: Product grade A | Dimensions partially changed | |
| Washers; outside diameter approx. 3 x bolt diameter | 9021 | 7093-2 | 2000-11 | Plain washers - Large series - Part 2: Product grade C | Dimensions partially change | |
| Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7089 | 2000-11 | Plain washers - Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | |
| Product grade A washers with a hardness up to 250 HV, designed for use with hexagon head bolts and nuts | 125-1 | 7090 | 1990-03 | Plain washers, chamfered - Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | |
| Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7089 | 2000-11 | Plain washers - Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | |
| Product grade A washers with a hardness from 300 HV, designed for use with hexagon head bolts and nuts | 125-2 | 7090 | 1990-03 | Plain washers, chamfered - Normal series, Product grade A | Without chamfer, up to nominal diameter 64 | |
| Product grade A washers with a hardness up to 250 HV, designed for use with cheese head screws | 433-1 | 7092 | 2000-11 | Plain washers - Small series, Product grade A | Pyramid diamond hardness 140 HV cancelled; rating changed | |
| Product grade A washers with a hardness up to 300 HV, designed for use with cheese head screws | 433-2 | 7092 | 2000-11 | Plain washers - Small series, Product grade A | Nominal sizes changed | |
| Hexagon thin nuts with M 1,6 to M 10 threads | 439-1 | 24036 | 4036 | 2001-02 | Hexagon thin nuts (unchamfered) - Product grade B | Correlation of dimensions with DIN 439-1, except for the width across flat of the nut M10 |
| Hexagon thin nuts with M 1,6 to M 52 and M 8x1 to M 52x3 threads | 439-2 | 24035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) - Product grades A and B | In tables 1 and 2 abbreviations changed and some specifications (thread dimensions) changed |
| Hexagon thin nuts with M 1,6 to M 52 and M 8x1 to M 52x3 threads | 439-2 | 24035 | 4035 | 2001-03 | Hexagon thin nuts (unchamfered) - Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; fine thread see ISO 8675 |
| Hexagon thin nuts with M 1,6 to M 52 and M 8x1 to M 52x3 threads | 439-2 | 28675 | 8675 | 2001-03 | Hexagon thin nuts (unchamfered) with metric fine pitch thread - Product grades A and B | Standard divided by regular type screw threads and fine threads; width across flats according to ISO 272 changed; nominal size range changed; regular type screw thread see ISO 4035 |
| Thread rolling screws for ISO metric thread - Part 1: Technical specifications for case hardened and tempered screws | 7500-1 | 2009-06 | Thread rolling screws for ISO-metric thread | Normative revision, values for case-hardening depth and hole size revised, torque values reduced | ||
| Hexagon head bolts with shank; M 1,6 to M 39 screw threads, Product grades A and B | 931-1 | 24014 | 4014 | 2001-03 | Hexagon head bolts - Product grades A and B | Nominal size extended; width across flats according to DIN ISO 272 included |
