British Standards Institution

Sector: Manufacturing

Categories:

Overview: Under the direction of the Standards Policy and Strategy Committee, is resonsible for the decisions relating to the preparation of British Standards for fasteners. It is also responsible for the UK input to ISO/TC 1, ISO/TC 2 and CEN/TC 185.

Committee standards activity

In Progress (75)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CEN ISO/TS 25393	Fasteners - Coating system assessment - Complementary and additional aspects to CQI-11 Categories: Unclassified documents Proposal begins :	Proposal
NWI to develop ISO/AWI 16224	Fasteners —Calculation methods for bolt/nut assemblies — Nut design under VA Categories: Information management \| Standardization. General rules \| Engineering \| Mechanical systems and components \| Fasteners Proposal begins : 2023-05-10	Proposal
New Work Item Proposal to develop ISO/NP 26453 -	Fasteners — Flat washers with inside chamfer of medium series — Product grade A Categories: Information management \| Standardization. General rules Proposal begins : 2026-03-16	Proposal
New Work Item Proposal -	Fasteners -- Mechanical properties of fasteners made of carbon steel and alloy steel -- Part : Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread Categories: Information management \| Standardization. General rules Proposal begins : 2025-12-24	Proposal
ISO/NP 898-12	Fasteners — Mechanical properties of fasteners made of non-alloy and low-alloy steel — Part 12: Nuts with nominal diameters 39 mm < D  100 mm and specified property classes Categories: Information management \| Standardization. General rules Proposal begins : 2026-04-02	Proposal
ISO/NP 898-11	Fasteners — Mechanical properties of fasteners made of non-alloy and low-alloy steel — Part 11: Bolts, screws and studs with nominal diameters 39 mm < d ≤ 100 mm and specified property classes Categories: Information management \| Standardization. General rules Proposal begins : 2026-04-02	Proposal
ISO/NP 7720 -	Fasteners - Prevailing torque (all metal) hexagon high nuts Categories: Standardization. General rules \| Engineering \| Mechanical systems and components \| Fasteners \| Fasteners. General \| Nuts \| Fasteners. Other Proposal begins : 2021-12-21	Proposal
ISO/NP 7380-4 (Ed 2)	Fasteners — Button head screws — Part 4: Hexalobular socket button head screws with collar Categories: Information management \| Standardization. General rules \| Engineering \| Mechanical systems and components \| Fasteners Proposal begins : 2023-06-05	Proposal
ISO/NP 7380-3 (Ed 2)	Fasteners — Button head screws — Part 3: Hexalobular socket button head screws Categories: Information management \| Standardization. General rules \| Engineering \| Mechanical systems and components \| Fasteners Proposal begins : 2023-06-05	Proposal
ISO/NP 7041 -	Fasteners - Prevailing torque type hexagon high nuts (with non-metallic insert) Categories: Standardization. General rules \| Engineering \| Mechanical systems and components \| Fasteners Proposal begins : 2021-12-21	Proposal

Published (240)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS ISO 965-6:2025	ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal and external threads (fine and medium tolerance qualities, first and second choices) Categories: Screw threads. Metric Published standard begins : 2025-07-29	Published standard
BS ISO 965-5:2025	ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal threads to mate with hot-dip galvanized external threads with maximum size of tolerance position h before galvanizing Categories: Screw threads. Metric Published standard begins : 2025-02-14	Published standard
BS ISO 965-4:2025	ISO general purpose metric screw threads. Tolerances. Limits of sizes for hot-dip galvanized external threads to mate with internal threads made to tolerance position H or G after galvanizing Categories: Screw threads. Metric Published standard begins : 2025-02-14	Published standard
BS ISO 965-3:2021	ISO general purpose metric screw threads. Tolerances. Limit deviations for screw threads Categories: Screw threads. Metric Published standard begins : 2021-07-30	Published standard
BS ISO 965-2:2024	ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal and external threads (tolerance classes 6H and 6g for M1,6 to M100 and 5H and 6h for M1 to M1,4) Categories: Screw threads. Metric Published standard begins : 2024-11-19	Published standard
BS ISO 965-1:2026	ISO general purpose metric screw threads. Tolerances. Principles and basic data Categories: Screw threads. Metric Published standard begins : 2026-04-17	Published standard
BS ISO 8992:2005	Fasteners. General requirements for bolts, screws, studs and nuts Categories: Bolts, screws, studs \| Nuts Published standard begins : 2005-04-27	Published standard
BS ISO 885:2000	General purpose bolts and screws. Metric series. Radii under the head Categories: Bolts, screws, studs Published standard begins : 2000-04-05	Published standard
BS ISO 7380-4:2026	Fasteners — Button head screws with reduced loadability. Hexalobular socket button head screws with collar Categories: Bolts, screws, studs Published standard begins : 2026-03-13	Published standard
BS ISO 7380-3:2026	Fasteners — Button head screws with reduced loadability. Hexalobular socket button head screws Categories: Bolts, screws, studs Published standard begins : 2026-03-13	Published standard

Withdrawn (130)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD ISO/TR 16224:2012	Technical aspects of nut design Categories: Nuts Withdrawn begins : 2026-07-07	Withdrawn
BS ISO 965-5:1998+A1:2021	ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing Categories: Screw threads. Metric Withdrawn begins : 2025-02-14	Withdrawn
BS ISO 965-5:1998	ISO general purpose metric screw threads. Tolerances. Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing Categories: Screw threads. Metric Withdrawn begins : 2021-07-26	Withdrawn
BS ISO 965-4:2021	ISO general purpose metric screw threads. Tolerances. Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing Categories: Screw threads. Metric Withdrawn begins : 2025-02-14	Withdrawn
BS ISO 965-4:1998	ISO general purpose metric screw threads. Tolerances. Limits of sizes for hot-dip galvanized external screw threads to mate with internal screw threads tapped with tolerance position H or G after galvanizing Categories: Screw threads. Metric Withdrawn begins : 2021-07-26	Withdrawn
BS ISO 965-2:1998+A1:2021	ISO general purpose metric screw threads. Tolerances. Limits of sizes for general purpose external and internal screw threads. Medium quality Categories: Screw threads. Metric Withdrawn begins : 2024-11-19	Withdrawn
BS ISO 965-1:2013+A1:2021	ISO general purpose metric screw threads. Tolerances. Principles and basic data Categories: Screw threads. Metric Withdrawn begins : 2026-04-17	Withdrawn
BS ISO 965-1:2013	ISO general purpose metric screw threads. Tolerances. Principles and basic data Categories: Screw threads. Metric Withdrawn begins : 2020-10-07	Withdrawn
BS ISO 888:2012	Fasteners. Bolts, screws and studs. Nominal lengths and thread lengths Categories: Bolts, screws, studs Withdrawn begins : 2018-07-11	Withdrawn
BS ISO 7720:2012	Prevailing torque type all-metal hexagon nuts, style 2. Property class 9 Categories: Nuts Withdrawn begins : 2025-06-26	Withdrawn

Message Committee Become a committee member

Committee members

Nominating organizations

B S S A - British Stainless Steel Association
British & Irish Association of Fastener Distributors Limited (BIAFD)
British Association of Fastener Distributors
British Constructional Steelwork Association Ltd
Committee Manager
Confederation of British Metalforming
Cooper and Turner Ltd
Energy Institute
Fastenal Europe
Galvanizers Association
Institute of Spring Technology
TR Fastenings

Liaisons with other committees

Chair - ACE/12
Chair - FME/9/-/1
Expert - ISO 22430
Individual Capacity - Bolting Expert
Individual Capacity - Fastener Manufacturing Expert
Individual Capacity - Fasterners
Individual Capacity - Industrial Equipment Expert
Individual Capacity – Fastener Expert
Individual Capacity – Socket Screws Expert
Secretary - CEN/TC 185

BSI roles

Committee Chair

Standards Development

FME/9 - Fasteners

Committee standards activity