DIN 7979C Internal Thread Dowel Pin 40Cr Extractable Locating Pin
Keywords:
DIN7979C dowel pin, internal thread parallel pin, extractable locating pin, 40Cr precision pin, mold positioning pin
Overview
DIN 7979C precision internal thread dowel pin is a standardized detachable positioning fastener complying with German industrial standards. Featuring an internal thread structure at the end, it allows convenient extraction from blind holes with professional tools without damaging pin holes or equipment parts, greatly simplifying equipment maintenance and component replacement. Different from high-hardness heat-treated pins, this 40Cr steel version maintains excellent comprehensive mechanical performance without heat treatment, with good toughness and stable structural strength. Processed by precision grinding, the end face and chamfer are flat and smooth to ensure seamless fitting and smooth assembly, providing accurate and repeatable positioning for mechanical components.
Material & Surface Treatment
All DIN 7979C internal thread dowel pins are made of premium 40Cr alloy steel with no heat treatment required. Adopting professional precision polishing technology, the product retains the original steel natural finish without any coating treatment. The surface is uniformly coated with anti-rust oil for long-term rust prevention and oxidation resistance. Strict fine processing ensures flat and neat end faces with smooth and uniform chamfers, no burrs, no uneven cuts or defects, fully meeting standard precision assembly requirements.
Application
DIN 7979C 40Cr internal thread dowel pins are widely used for precision positioning and detachable fixing in mold structures, mechanical jigs and fixtures, automation equipment, general machinery, automotive tooling and precision instrument assembly, suitable for conventional precision positioning scenarios without high hardness requirements.
| Standard Compliance | Strictly manufactured per DIN 7979C standard with precise dimensional tolerance and excellent straightness, perfectly matching global standard assembly requirements. |
| Stable 40Cr Material | High-quality 40Cr alloy steel features good toughness and stable structural strength, no heat treatment needed for convenient mass production and stable performance. |
| Detachable & Reusable | Internal thread extractable design solves blind hole disassembly problems, convenient for repeated disassembly, maintenance and replacement. |
| Precision Fine Finish | Polished natural surface with flat end face and smooth chamfer, no burrs or unevenness, ensuring seamless fitting assembly. |
| Effective Anti-Rust Protection | Uniform anti-rust oil coating isolates air oxidation, maintaining smooth surface and stable performance during storage and service. |
Top Sellers
Eugene (Wenzhou) Industry Co., Ltd is a specialized manufacturer focused on fastening products, delivering trusted solutions to global partners.
Frequently Asked Questions
product
What core advantages does standard DIN471 external circlip have over non-standard snap rings?
Produced per DIN471 & EN10132-4, it features precise dimension matching standard grooves. Made of 65Mn/C67S, it delivers outstanding anti-fatigue performance and resists loosening under long-term vibration.
How to maintain DIN472 when elastic weakness appears during equipment inspection?
Fatigued circlip cannot be restored; replace with brand-new DIN472 and forbid repeated usage of deformed old parts.
Standard installation operation of DIN6799 circlip?
Align E opening with shaft groove and press down vertically with flat screwdriver until fully seated.
Benefit of phosphated surface for DIN2093 during component service?
Phosphating improves rust and wear resistance to extend service life of DIN2093 inside hydraulic cylinders and high-pressure valves.
Self-locking fixing principle of DIN1481 slotted spring pin?
Slotted body shrinks during pressing and rebounds to expand against hole wall, forming radial preload for self-lock positioning.
business
How to select material of ISO8752 reasonably for different working environments?
Choose 65Mn black oxide carbon steel for dry indoor machinery, auto chassis and general reducer; switch to stainless steel ISO8752 for damp, oily and corrosive working conditions like water pumps and food equipment.
Correct disassembly method for DIN1 during mould maintenance?
Eject DIN1 from opposite end via pin punch; violent hammering is forbidden to avoid bore deformation.
Solution for stuck DIN7 taper pin during equipment overhaul?
Knock out from big end; drill and replace new DIN7 if severely rust locked.
Heat treated quenched steel strip includes blued strip and polished strip, what are respective advantages of two surface types?
All heat treated quenched steel strip is fully quenched with high hardness and stable elasticity. Blued steel strip forms uniform blue oxide layer for natural rust resistance with high cost performance; polished steel
What are the core advantages of annealed steel strip compared with semi-hard strip and heat treated quenched steel strip?
Made from 65Mn, C67S and other spring steel grades, annealed steel strip gets full full-annealing stress relief treatment. It owns the best ductility among three types of steel strips, hardly cracking during bending,
We Are Professionals
CONTACT US
Adhering to the tenet of Quality First for Sustainable Development, we rely on advanced production facilities and standardized quality management to supply dependable high-end products and bespoke services worldwide.