The national standard for fasteners is a system of technical specifications formulated by China for mechanical fasteners such as bolts, screws, and nuts.
This standard system covers multiple dimensions, including dimensional specifications, mechanical properties, tolerance requirements, surface treatments, and testing methods. It is primarily divided into two categories: national standards and industry standards. National standards are centered around GB/T; for example, GB/T 1237-2000 specifies the marking methods for fasteners, the GB/T 3098 series addresses the mechanical performance indicators for bolts and nuts, and the GB/T 5267 series clearly defines the technical requirements for surface treatment processes such as electroplating and hot-dip galvanizing. Industry standards include specialized regulations in areas such as QC/T 597-1999 for pre-coated microcapsule anaerobic dry film adhesives, Q Automotive Standards (for the automotive industry), PEM Standards (for precision electronic components), JB Standards (standards issued by the Ministry of Machinery), HG Chemical Standards, and others. Relevant international standards encompass DIN standards from Germany, ASME/IFI/ANSI standards from the United States, JIS standards from Japan, NFE standards from France, BS standards from the United Kingdom, UNI standards from Italy, and ISO international standards.

National standard
GB/T 1237-2000 Fastener Marking Methods
GB/T 152.1-1988 Fasteners — Through-Holes for Rivets
GB/T 152.2-1988 Fasteners — Countersunk Holes for Countersunk Head Screws
GB/T 152.3-1988 Fasteners — Countersunk Holes for Round Head Bolts
GB/T 152.4-1988 Fasteners — Countersunk Holes for Hex Head Bolts and Hex Nuts
GB/T 16823.1-1997 Stress Cross-sectional Area and Bearing Area of Threaded Fasteners
GB/T 16823.2-1997 General Rules for the Fastening of Threaded Fasteners
GB/T 16823.3-1997 Method for Testing the Tightening of Threaded Fasteners
GB/T 16938-2008 Fasteners — Bolts, Screws, Studs and Nuts — General Technical Conditions
GB 17464-1998 — Safety requirements for threaded and non-threaded clamping devices used for connecting copper conductors in connection devices
GB/T 17645.511-2010 Industrial Automation Systems and Integration—Part Library—Part 511: Mechanical Systems and General Components—Fasteners Reference Dictionary GB/T 2670.1-2004 Internal Hexagonal Slotted Pan Head Self-Tapping Screws
GB/T 3098.1-2000 Mechanical Properties of Fasteners — Bolts, Screws, and Studs
GB/T 3098.10-1993 Mechanical Properties of Fasteners—Bolts, Screws, Studs and Nuts Made of Nonferrous Metals
GB/T 3098.11-2002 Mechanical Properties of Fasteners – Self-drilling and Self-tapping Screws
GB/T 3098.12-1996 Mechanical Properties of Fasteners – Conical Nut Proof Load Test
GB/T 3098.13-1996 Mechanical Properties of Fasteners — Torque Testing and Breakage Torque for Bolts and Screws, Nominal Diameter 1–10 mm
GB/T 3098.14-2000 Mechanical Properties of Fasteners – Nut Hole Expansion Test
GB/T 3098.15-2000 Mechanical Properties of Fasteners — Stainless Steel Nuts
GB/T 3098.16-2000 Mechanical Properties of Fasteners — Stainless Steel Set Screws
GB/T 3098.17-2000 Mechanical Properties of Fasteners — Preload Test for Hydrogen Embrittlement Inspection — Parallel Support Surface Method
GB/T 3098.18-2004 Mechanical Properties of Fasteners — Test Methods for Blind Rivets
GB/T 3098.19-2004 Mechanical Properties of Fasteners—Pull-Rivet Nails
GB/T 3098.2-2000 Mechanical Properties of Fasteners – Nuts – Coarse Threaded Nuts with Coarse Threads
GB/T 3098.20-2004 Mechanical Properties of Fasteners — Butterfly Nuts — Guaranteed Torque
GB/T 3098.21-2008 Mechanical Properties of Fasteners — Stainless Steel Self-tapping Screws
GB/T 3098.22-2009 Mechanical Properties of Fasteners — Fine-Grain Non-Quenched and Tempered Steel Bolts, Screws, and Studs
GB/T 3098.3-2000 Mechanical Properties of Fasteners — Set Screws
GB/T 3098.4-2000 Mechanical Properties of Fasteners – Nuts – Fine Thread Threads
GB/T 3098.5-2000 Mechanical Properties of Fasteners — Self-tapping Screws
GB/T 3098.6-2000 Mechanical Properties of Fasteners — Stainless Steel Bolts, Screws, and Studs
GB/T 3098.7-2000 Mechanical Properties of Fasteners — Self-tapping Screws
GB/T 3098.8-1992 Mechanical Properties of Fasteners — Threaded Fastener Assemblies for Heat Resistance
GB/T 3098.9-2002 Mechanical Properties of Fasteners – Steel Hexagonal Locking Nuts with Effective Torque Type
GB/T 3099.1-2008 Fastener Terminology — Threaded Fasteners, Pins, and Washers
GB/T 3099.2-2004 Fastener Terminology: Blind Rivets
GB/T 3103.1-2002 Fastener Tolerances—Bolts, Screws, Studs and Nuts
GB/T 3103.2-1982 Tolerances for Fasteners—Bolts, Screws, and Nuts for Precision Machinery
GB/T 3103.3-2000 Fastener Tolerances – Plain Washers
GB/T 3103.4-1992 Fastener Tolerances — Threaded Fastener Assemblies for High-Temperature Applications
GB/T 3104-1982 Fasteners — Width Across Opposite Sides of Hexagonal Products
GB/T 5267.1-2002 Fasteners — Electroplated Coatings
GB/T 5267.2-2002 Fasteners — Non-electrolytic Zinc-Coated Layers
GB/T 5267.3-2008 Fasteners — Hot-dip galvanized coatings
GB/T 5267.4-2009 Fastener Surface Treatment — Passivation Treatment for Corrosion-Resistant Stainless Steel
GB/T 5276-1985 Fasteners — Dimensions and Designations for Bolts, Screws, Studs, and Nuts
GB/T 5277-1985 Fasteners — Through-Holes for Bolts and Screws
GB/T 5278-1985 Fasteners — Slotted Pin Holes and Wire Hole
GB/T 5779.1-2000 Fastener Surface Defects—Bolts, Screws, and Studs—General Requirements
GB/T 5779.2-2000 Fastener Surface Defects—Nuts
GB/T 5779.3-2000 Fastener Surface Defects—Bolts, Screws, and Studs—Special Requirements

Industry standard
JB/T 4213-1996 Fastener Cold Forging Die—Technical Conditions, Beijing Institute of Mechanical and Electrical Engineering
JB/T 7384.13-1994 Fasteners — Gauge for Measuring the Outer Circle Diameter of Self-Tapping Locking Screws
JB/T 7384.14-1994 Fasteners — Caliper for Measuring Minor Diameter of Wood Screw Threads
JB/T 7384.2-1994 Fasteners — Gauge for Inspection of Countersunk and Half-Countersunk Head Heights
JB/T 7384.3-1994 Fasteners — Gauge for Inspection of Head Height and Thickness Between Slot and Supporting Surface
JB/T 7384.4-1994 Fasteners — Torque Testing Gauge for Tightening Height
JB/T 7384.7-1994 Fasteners – Slot Width Plug Gauge
JB/T -1994 Fasteners – Slot Depth Plug Gauge
JB/T 4213-1996 Fastener Cold Forging Die—Technical Conditions, Beijing Institute of Mechanical and Electrical Engineering
JB/T 7384.13-1994 Fasteners — Gauge for Measuring the Outer Circle Diameter of Self-Tapping Locking Screws
JB/T 7384.14-1994 Fasteners — Caliper for Measuring Minor Diameter of Wood Screw Threads
JB/T 7384.2-1994 Fasteners — Gauge for Inspection of Countersunk and Half-Countersunk Head Heights
JB/T 7384.3-1994 Fasteners — Gauge for Inspection of Head Height and Thickness Between Slot and Supporting Surface
JB/T 7384.4-1994 Fasteners — Torque Testing Gauge for Tightening Height
JB/T 7384.7-1994 Fasteners – Slot Width Plug Gauge
JB/T 7384.8-1994 Fasteners – Groove Depth Plug Gauge
JB/T 9151.1-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Bolts, Screws, Studs, and Nuts
JB/T 9151.2-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Wood Screws
JB/T 9151.3-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Self-tapping Screws
JB/T 9151.4-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Washers
JB/T 9151.5-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Pin
JB/T 9151.6-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Rivets
JB/T 9151.7-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Retaining Rings
JB/T 9151.1-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Bolts, Screws, Studs, and Nuts
JB/T 9151.2-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Wood Screws
JB/T 9151.3-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Self-tapping Screws
JB/T 9151.4-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Washers
JB/T 9151.5-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Pin
JB/T 9151.6-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Rivets
JB/T 9151.7-1999 Fastener Testing Methods—Dimensions and Geometric Accuracy—Retaining Rings
QC/T 597-1999 Threaded Fasteners—Pre-coated Microencapsulated Anaerobic Dry Film Adhesive
SJ 2494-1984 Fasteners — Cross-recessed Flat-Head Screws
SJ 2495-1984 Fasteners — Self-tapping Threads
SJ 2496-1984 Fasteners — Hot-rolled steel self-tapping screws—Mechanical properties
SJ 2497-1984 Fasteners — Cross-recessed Pan Head Self-tapping Screws
SJ 2498-1984 Fasteners – Cross-recessed countersunk self-tapping screws
SJ 2499-1984 Fasteners – Cross-recessed, Half-countersunk Self-tapping Screws
SJ 2500-1984 Fasteners – Cross-recessed Flat-Head Self-tapping Screws
SJ 2501-1984 Fasteners – Cross-recessed Pan Head Flange Self-tapping Screws
SJ 2502-1984 Fasteners — Cross-recessed Pan Head Self-tapping Screws with Common Thread
SJ 2503-1984 Fasteners – Cross-recessed Countersunk Ordinary Thread Self-tapping Screws
SJ 2504-1984 Fasteners – Cross-recessed Flat-Head Ordinary Thread Self-tapping Screws
SJ 2505-1984 Fasteners — Round-head Screws That Do Not Come Loose
SJ 2506-1984 Fasteners — Sliding Nuts
SJ 2507-1984 Fasteners — Riveted Round Nuts
SJ 2508-1984 Fasteners — Light Hexagonal Slender-Tooth Nuts with Special Flat Head
SJ 2509-1984 Fasteners — Riveted Square Nuts
SJ 2510-1984 Fasteners — Handle Washers
SJ 2511-1984 Fasteners — Insulating Washers
SJ 2512-1984 Fasteners—Insulating Washers SJ 2823-1987 Fasteners for Television Receivers—Cross-recessed Flat-head Self-tapping Screws
SJ 2824-1987 Fasteners for Television Receivers — Cross-recessed Self-tapping Screws with Large Spherical Heads
SJ 2825-1987 Fasteners for Television Receivers — Cross-recessed Large Spherical Flange Self-tapping Screws
SJ 2826-1987 Fasteners for Television Receivers — Cross-recessed Hexagonal Head Self-tapping Screws
SJ 2827-1987 Fasteners for Television Receivers — Cathode Ray Tube Bracket Bolts
SJ 2828-1987 Fasteners for Television Receivers — Cross-recess pan-head screws
SJ 2829-1987 Fasteners for Television Receivers—Cross-recess, Large Spherical-head Screws
SJ 2830-1987 Fasteners for Television Receivers — Cross-recessed Large Spherical Flange Screws
SJ 2831-1987 Fasteners for Television Receivers — Cross-recessed, Large Spherical Head Self-tapping Locking Screws
SJ 2832-1987 Fasteners for Television Receivers—Cross-recessed Large Spherical Flange Self-tapping Locking Screws
SJ 2833-1987 Technical Specifications for Self-Tapping Locking Screws with Cross-Slot Fasteners for Television Receivers
SJ 2834-1987 Fasteners for Television Receivers—Combination Screws with Cross-recessed Pan Head and Flat Washers
SJ 2835-1987 Fasteners for Television Receivers—Combination Screw with Cross-recessed Pan Head and Spring Washer
SJ 2836-1987 Fasteners for Television Receivers—Combination Screw with Cross-recessed Pan Head, Spring Washer, and Flat Washer
SJ 2837-1987 Technical Specifications for Cross-Head Combination Screws Used as Fasteners for Television Receivers
SJ 2838-1987 Fasteners for Television Receivers: Combination Self-Tapping Screw with Large Spherical Head and Flat Washer, with Cross-Slot Design
SJ 2839-1987 Fasteners for Television Receivers—Combination Self-Tapping Screw with External Tooth Washer and Large Spherical Head with Cross Slot
SJ 2840-1987 Fasteners for Television Receivers: Combination Self-Tapping Screws with Cross-Slot Hexagonal Head and Flat Washers
SJ 2842-1987 Fasteners for Television Receivers – Hexagonal Flange Nuts
SN 0030-1992 Inspection Procedure for Fasteners for Export
TB 2129-1990 High-Strength Fasteners for Rail Insulated Joints
Fasteners are also called screws—though the terminology differs, the underlying concept remains the same. Each type of fastener is a general term for a category of mechanical parts used to securely join two or more components (or structural elements) into a single, unified assembly. Fastener products all involve standards covering several key aspects.
1. Standards for fastener product dimensions: These standards specify the basic dimensions of the products in detail. For threaded products, they also cover the basic dimensions of the threads, thread termination, shoulder distance, relief grooves and chamfers, as well as the end dimensions of external-threaded components.
2. Standards pertaining to technical specifications for fastener products. These primarily include standards on product tolerances, mechanical properties, surface defects, surface treatments, and product testing, as well as specific provisions related to these areas.
3. Standards for acceptance inspection of screw products, as well as for marking and packaging: Specifically outlines the acceptable quality levels and sampling plans for items subject to spot checks during factory acceptance inspections, as well as the requirements for product marking methods and packaging.
4. Standard Methods for Marking Standard Parts, Fasteners, Screws, and Bolts: Specifically outlines the requirements for both complete marking methods and simplified marking methods for products.
5. Other standards related to fasteners: such as standards for fastener terminology and standards for the weight of fastener products, etc.