DIN 7979D Internal Thread Dowel Pin GCr15 Precision Extractable Locating Pin
Keywords：
DIN7979D dowel pin, internal thread locating pin, extractable parallel pin, GCr15 precision pin, mold positioning pin
Overview
DIN 7979D precision internal thread dowel pin is a standardized extractable positioning fastener in accordance with German industrial standards. Different from ordinary solid dowel pins, it adopts an internal thread structure at the end, allowing convenient removal via special tools from blind holes without damaging mounting holes or equipment components. Designed with precise m6 tolerance and fine ground surface, the pin ensures accurate interference fit and repeat positioning accuracy. The smooth rounded R corner design avoids assembly jamming and stress concentration, while the high-hardness integral structure provides excellent shear resistance and wear resistance. It is an essential core component for mold calibration, fixture positioning and precision mechanical assembly.
Material & Surface Treatment
All DIN 7979D internal thread dowel pins are made of premium GCr15 bearing steel. Adopting professional integral heat treatment, the product achieves stable hardness of 58-62HRC, featuring high rigidity, outstanding wear resistance and strong shear resistance. The surface is processed with precision polishing to retain the original steel finish without any coating treatment. Uniform anti-rust oil coating is applied for long-term oxidation and rust prevention. Strict fine finishing ensures smooth rounded R corners with no obvious tool marks, scratches or burrs on the entire surface, fully meeting high-precision mechanical assembly standards.
Application
DIN 7979D GCr15 high-hardness dowel pins are widely used for precision positioning and detachable fixing in mold manufacturing, precision jigs and fixtures, automotive tooling, hydraulic equipment, automation machinery and precision instruments. Especially suitable for high-precision, high-wear and frequent maintenance assembly scenarios.
| Standard Precision | Strictly manufactured per DIN 7979D standard with m6 high-precision tolerance, excellent straightness and stable dimensional consistency for global standard assembly. |
| High-Hardness GCr15 Material | Adopts premium GCr15 bearing steel with 58-62HRC heat treatment hardness, outstanding wear resistance and structural stability. |
| Extractable & Detachable | Unique internal thread design solves blind hole disassembly difficulties, convenient for equipment maintenance and part replacement without hole damage. |
| Exquisite Fine Craft | Precision polished natural finish, smooth rounded R corners, no tool marks or burrs, flawless high-precision appearance. |
| Reliable Anti-Rust Performance | Uniform oil coating treatment effectively prevents surface oxidation and rust, ensuring stable performance during storage and long-term use. |
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,
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