PB-Type Toolmaker Grade Precision Parallel Set | Ground Hardened Steel DIN 875 Standard Hoshing

Professional toolroom-grade precision parallel bar set, manufactured from hardened chrome steel to DIN 875 standard, with 0.001mm ultra-tight parallelism and flatness tolerance. Each set contains multiple pairs of precision ground parallel blocks, packed in a protective wooden storage case with anti-rust individual wrapping. Single full set retail supported with no minimum order quantity, essential workholding accessory for CNC milling, surface grinding, toolmaking, fixture setup and precision workpiece height adjustment.

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ISO/CE Certified

Industrial Durability

OEM/ODM Support

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Description

This PB-Type precision parallel set is a fundamental workholding and measuring accessory for precision machining workshops, used to elevate and level workpieces inside Machine vise s, set up fixture heights, and verify parallelism during inspection. Manufactured strictly to DIN 875 German industrial standard, every bar undergoes multi-pass precision grinding and cryogenic stabilization treatment, delivering exceptional dimensional stability and wear resistance far superior to ordinary machined parallel blocks. It is an indispensable tool for mold making, precision grinding, CNC machining and quality control inspection.

Premium Hardened Chrome Steel Material

All parallel bars are forged from high-grade GCr15 chrome bearing steel, overall quenched to HRC 58–62 hardness, with excellent wear resistance, anti-deformation performance and long-term dimensional stability. The hardened surface resists indentation and scratching from heavy clamping and repeated workpiece loading, maintaining accuracy for years of daily workshop use.
Ultra-Precision DIN 875 Grade Accuracy

All six surfaces of each bar are mirror precision ground, with parallelism and flatness controlled within 0.001mm across the full length. Surface finish reaches Ra ≤ 0.2μm, ensuring wringing-quality contact with workpiece and vise surfaces for stable, error-free support.
Multiple Size Combinations

Available in various set configurations with different height ranges to cover common machining requirements, including popular heights from 5mm up to 40mm. Each set contains matched pairs of parallel bars for symmetric workpiece support, eliminating tilting and ensuring uniform clamping force.
Protective Wooden Storage Case

Each full set is supplied in a solid wooden storage box with soft foam lining, and every individual bar is wrapped in anti-rust paper to prevent oxidation and collision damage during storage and transportation. The marked size slots inside the box keep all bars organized for quick size selection.
Retail-Oriented Global Shipping Configuration

Each parallel set is packed in an outer shockproof export carton, supplied with a full English specification sheet and operation guide. Standardized retail packaging is suitable for international express delivery, with clear packing dimensions and weight data for fast customs clearance.

Core Retail Selling Points

✅ Zero minimum order limit, single full set retail for individual machinists and small workshop restock

✅ DIN 875 toolmaker grade precision, 0.001mm parallelism & flatness tolerance

✅ Hardened GCr15 chrome steel, HRC 58-62, ultra wear-resistant and dimensionally stable

✅ Multiple height sizes in one set, matched pairs for balanced workpiece support

✅ Anti-rust wrapped + wooden storage case with foam lining for long-term protection

✅ Mirror ground surface, Ra ≤ 0.2μm for precise contact and positioning

✅ 12-month retail warranty against manufacturing and accuracy defects

Standard Specification

Item	Parameter Detail
Standard Compliance	DIN 875 Toolmaker Grade
Material	GCr15 Hardened Chrome Bearing Steel
Hardness	HRC 58 – 62
Parallelism & Flatness	≤ 0.001mm across full length
Surface Finish	Ra ≤ 0.2μm mirror precision ground
Available Height Range	5mm – 40mm (multiple set configurations)
Storage Package	Solid wooden case with foam lining + individual anti-rust wrapping
Main Application	CNC milling, surface grinding, vise workholding, fixture setup, height adjustment, parallelism inspection

Target Retail Buyers

CNC milling technicians, precision grinding operators, tool and die makers, mold manufacturing technicians, fixture design engineers, QC inspection personnel, vocational machining training labs, metalworking DIY hobbyists, small precision machining workshops.

Applications

CNC Machining

Ideal for CNC lathe, milling and machining center operations, ensuring high-precision dimensional control and reliable tool holding for mass production.

Quality Control Labs

Suitable for quality inspection departments and calibration labs, providing accurate measurement data to verify product compliance with ISO and industry standards.

Mold & Die Making

Perfect for mold and die workshops, where micron-level precision tools and gauges are essential for complex cavity machining and final inspection.

OEM/ODM Projects

Customizable solutions for OEM and ODM manufacturing partners, offering tailored measuring tools and CNC accessories to meet unique production requirements.

Automotive Manufacturing

Designed for automotive component production lines, ensuring consistent precision and durability in engine parts, transmission components and assembly processes.

Aerospace & Precision Engineering

Ideal for aerospace and defense manufacturing, where ultra-high precision instruments and reliable tool holders meet strict quality and safety requirements.