Din960 Din961 Hexagon Head Cap Screws

 

 

 

DIN960/DIN961 hexagon head cap screws are precision metric fasteners engineered to German DIN standards, with DIN961 featuring standard coarse threads and DIN960 designed for fine threads. Characterized by a full-thread shank, uniform hex head drive and precise dimensional tolerance, these screws deliver reliable clamping force and easy installation for mechanical assembly, equipment manufacturing and industrial fastening. As a universal high-precision fastener, they are widely used in scenarios requiring stable thread engagement, with coarse/fine thread options to match diverse structural and installation needs, complying with strict German industrial quality criteria.

 

 

 

Feature	DIN960 (Fine Thread)	DIN961 (Coarse Thread)
Thread Type	Fine pitch	Coarse pitch
Primary Advantage	Anti-loosening, precise adjustment, low vibration sensitivity	High load capacity, quick assembly, easy thread cleaning
Ideal Application	Vibration-prone equipment, precision machinery, thin-walled parts	General mechanical assembly, heavy-load structural connections, construction equipment
Torque Bearing	Lower tightening torque, uniform stress distribution	Higher tightening torque, strong load transmission

 

 

Property Class	Minimum Tensile Strength	Minimum Yield Strength	Hardness Range
8.8 (Carbon/Alloy Steel)	800 MPa	640 MPa	22–32 HRC
10.9 (Alloy Steel)	1040 MPa	940 MPa	32–39 HRC
12.9 (High-Grade Alloy Steel)	1220 MPa	1100 MPa	39–44 HRC
A2-70 (304 Stainless Steel)	700 MPa	500 MPa	≤200 HB
A4-80 (316 Stainless Steel)	800 MPa	650 MPa	≤220 HB

 

 

 

 

1. Thread Matching: Pair DIN960 (fine thread) with fine thread nuts and DIN961 (coarse thread) with coarse thread nuts; ensure consistent pitch and specification to avoid cross-threading.
2. Grade Selection: Choose strength grade per load requirements-8.8/10.9 for industrial heavy load, 4.8 for light assembly, stainless steel for corrosive environments.
3. Installation: Use a matching hexagon wrench/socket; tighten with uniform force to avoid over-tightening (thread deformation/bolt breakage) or under-tightening (loosening). For vibration scenarios, add lock washers or thread lock adhesive (especially for DIN960 fine thread).
4. Environmental Adaptation: Select surface treatment per working conditions-zinc plating for indoor dry environments, H.D.G/Dacromet for outdoor/humid conditions, 316 stainless steel for marine/high-chloride/corrosive chemical environments.
5. Inspection & Maintenance: Regularly check for loosening, corrosion or thread damage in dynamic/vibration equipment; replace screws immediately if defects are found; re-tighten with calibrated torque for critical connections.
6. Forbidden Operations: Do not use damaged/ deformed screws; avoid welding/secondary processing (grinding, drilling) on screws after production; do not mix different grades/specifications/thread types in the same connection.

 

 

Packaging

• Standard: Sealed anti-rust plastic bags (fixed quantity) + cardboard boxes + wooden pallets; small parts available in blister packs for retail/hardware distribution.
• Custom: Project-specific labeling (specification/grade/length), vacuum anti-rust packaging for precision equipment fasteners, and customized quantity packaging for assembly line needs.
• All packaging protects threads and hex heads from damage, corrosion and deformation during transportation and storage.

Logistics

• Support bulk ordering, small-batch retail and project-based customized cutting; flexible MOQ for standard specifications, with quick delivery for common sizes (M3–M20).
• Negotiable transportation terms (FOB, CIF, EXW); global shipping available, with specialized packaging for long-length screws to prevent bending.
• Align delivery schedules with customer production/assembly timelines, providing just-in-time supply for industrial assembly lines.

Quality Assurance

• Fully compliant with DIN 960/DIN 961 standards; certified to ISO9001:2015 quality management system, with additional ISO14001 for environmental management.
• 100% batch testing for dimensional accuracy, thread precision and mechanical properties (tensile, yield strength, hardness); provide quality inspection reports and material certificates.
• Strict raw material control: Sourced from qualified alloy/carbon/stainless steel suppliers, with traceability for all product batches.
• Comprehensive after-sales service: Pre-sales technical consultation (grade/thread selection), in-sales quality tracking, and after-sales installation guidance for special scenarios.

Main Sales Markets: Europe, North America, Southeast Asia, the Middle East and global industrial markets adopting German DIN metric standards, including mechanical manufacturing, automotive and electrical equipment industries.

 

 

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