UJEN DEVELOPMENT CO., LTD.

High-quality manufacturer of hand screws, knob screws, and adjustable handles, focusing on customization and ISO 9001 certified quality.

Standards & Specifications

Reference Standards for Precision Fastening Components

Standards & Specifications provide structured reference information for fastening components used in adjustable and precision assemblies. This section consolidates commonly referenced standards, dimensional conventions, and specification frameworks related to handle screws, knob screws, clamping handles, and spring pull pins.
As a Taiwan-based manufacturer with ISO 9001–certified processes, UJEN aligns design, tooling, and production with recognized international standards to ensure compatibility, consistency, and reliable integration across global OEM applications.


Purpose of Standards & Specifications

Standards & Specifications serve as a technical reference layer for engineers and procurement teams who require clarity and consistency when integrating fastening components into their designs. This section focuses on commonly used dimensional systems, terminology, and specification logic rather than individual product models.

International Standards and Norms

UJEN fastening components are designed with reference to widely adopted international standards, including metric and imperial systems, thread conventions, and commonly recognized dimensional practices. These references support interoperability and reduce uncertainty during global sourcing and design integration.

Dimensional Conventions and Tolerances

This section explains how dimensions, tolerances, and fit relationships are typically defined for adjustable fastening components. Understanding these conventions helps engineers evaluate compatibility, assembly behavior, and repeatability in precision structures.

Material Specifications

Standards & Specifications also address material-related references, including plastics, reinforced polymers, and metals commonly used in fastening components. These references focus on performance characteristics, environmental considerations, and consistency rather than promotional material claims.

Alignment Between Standards and Manufacturing

UJEN integrates standard references into precision mold design, CNC machining, and quality control workflows. This alignment ensures that specification intent is maintained from design through production, supporting stable mass production and reliable customization.

How Engineers Use Standards in Design

Engineers rely on standards and specifications to communicate requirements, verify compatibility, and reduce design risk. This section supports early-stage design decisions by clarifying how specification frameworks are applied in real fastening applications.

The Role of Standards & Specifications within UJEN Resources

Within the UJEN Resources system, Standards & Specifications provide a shared technical foundation that supports Application Guides, Comparison & Selection Guides, Technical Resources, and Advanced Search. Together, these sections enable informed and efficient decision-making.

Secure Positioning with Robust Indexing Plungers for Accurate Component Placement

Based in Taiwan since 1994, UJEN DEVELOPMENT CO., LTD. expertise in manufacturing high-quality hand screws, knob screws, adjustable handles, grip knobs, and indexing plungers. Their commitment to customization and precision ensures each component, from hand screws to indexing plungers, meets rigorous standards. This dedication positions UJEN as a leader in supplying durable and reliable industrial components to global markets.

UJEN Development Co., Ltd. is a leading manufacturer of precision-engineered hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers for a variety of industrial needs. Our 45-year legacy, combined with ISO 9001:2015 certification, underscores our commitment to quality, innovation, and customer satisfaction. Specializing in custom solutions, we excel in professional moldmaking, enhancing equipment functionality across industries.

UJEN has been offering customers high-quality hand screws for industrial machinery since 1994, both with advanced technology and 47 years of experiences, UJEN ensures each customer's demands are met.