DIN316 Butterfly Wing Hand Screw Thumb Bolt Alloy Steel Fastener

描述

1.Superior Mechanical Performance
Forged from quenched-and-tempered alloy steel (e.g. SAE 4140), these wing bolts, thumb bolts, and butterfly nuts conform to DIN 316 dimensional standards and deliver exceptional strength. Typical tensile strength exceeds 1 000 MPa with yield strength over 900 MPa and Rockwell hardness of 35–42 HRC. A precision zinc or black-oxide finish adds moderate corrosion resistance and preserves tight thread tolerances for repeatable clamping.

2.Versatile Application Range
Ideal for assemblies requiring frequent adjustments or tool-free access—machine guards, jigs and fixtures, electrical panels, photographic rigs, lab equipment, exhibition stands, furniture fittings, and automotive service fixtures. The DIN 316 profile ensures interchangeability with existing hardware in industrial and commercial installations.

3.Effortless, Tool-Free Operation
Ergonomically contoured wing heads and knurled thumb knobs provide secure finger-tight fastening up to 5–8 Nm, eliminating the need for wrenches or screwdrivers. The butterfly-nut style delivers uniform clamping pressure and quick hand-adjustment, streamlining assembly and maintenance tasks in both production lines and field environments.

4.Certified Quality & Traceability
Manufactured in ISO 9001-certified facilities with full material traceability. Each batch undergoes rigorous dimensional inspection (±0.1 mm), hardness testing, drive-engagement verification, and coating-thickness measurement (≥8 µm for zinc). Salt-spray resistance meets or exceeds 72 hours per ASTM B117, ensuring long-term reliability in demanding environments.