技术规格

DIN 931 / ISO 4014 / GB 5782 Hex Head Bolts with Shank 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet
收起图片
DIN 931 / ISO 4014 / GB 5782 Hex Head Bolts with Shank 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet
DIN 931 / ISO 4014 / GB 5782 Hex Head Bolts with Shank 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet

标准

DIN 931 / ISO 4014 / GB 5782

规格

M3 - M64

材质

Carbon Steel / Alloy Steel / Stainless Steel (SS304/SS316)

强度等级

4.8 / 5.8 / 8.8 / 10.9 / 12.9

表面处理

Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet

产品描述

标准公制粗牙,可选细牙。

产品技术规格书
Model: DIN 931 / ISO 4014 / GB 5782 外六角螺栓 半牙 pdf
尺寸代号规格参数(mm)
d
P
L
L (max)
L (min)
da (max)
ds (max)
ds (min)
e (min)
k (min)
k (max)
r (min)
s (max)
s (min)

Technical Specifications

DIN 931-2-2009 外六角螺栓 半牙
产品编号
DIN 931-2
产品规格
M68 * 200
产品标准
DIN 931-2-2009
材料牌号
—
单位
毫米 mm
机械性能
—
尺寸代号规格参数(mm)尺寸代号规格参数(mm)
d直径M68P螺距6
L长度200L(max)Lmax200.925
L(min)Lmin199.075da(max)damax75
ds(max)dsmax68ds(min)dsmin67.26
e(min)emin110.51k(min)kmin42.5
k(max)kmax43.5r(min)rmin2
s(max)smax100s(min)smin97.8
dsRod diameter67.26
其他要求
技术条件
材料材质钢通用技术条件
牌号
螺纹公差机械性能等级
标准标准
公差产品等级表面处理
标准
表面粗糙度表面缺陷
验收及包装千支重参考值(kg)

工业应用

DIN 931 Hex Bolts (Partial Thread) | Industrial Applications

1. Heavy Machinery & Industrial Equipment

  • Large Gearbox & Transmission Assembly:Recommended: M20 * 100 / M24 * 120 | Grade 10.9 | Plain or Lightly OiledTechnical Insight: In high-torque environments, the unthreaded shank of DIN 931 acts as a dowel pin, offering superior shear resistance compared to full-thread bolts, ensuring the gearbox housing remains perfectly aligned.
  • Conveyor System Frameworks:Recommended: M12 * 80 / M16 * 100 | Grade 8.8 | Zinc PlatedTechnical Insight: The smooth shank minimizes wear on the mounting holes during continuous vibration, extending the fatigue life of the conveyor structure in mining and logistics sectors.

2. Steel Structures & Civil Engineering

  • Bridge Girders & Truss Connections:Recommended: M24 * 150 / M30 * 200 | Grade 10.9 | Hot Dip Galvanized (HDG)Technical Insight: DIN 931 is preferred for structural "slip-critical" joints. The shank handles lateral loads more effectively than threads, while the HDG coating ensures decades of protection against atmospheric corrosion.
  • Tower Crane Mast Sections:Recommended: M36 * 200 / M48 * 300 | Grade 12.9 | DacrometTechnical Insight: For critical lifting equipment, Grade 12.9 provides maximum tensile strength. The partial thread design prevents stress concentration at the joint's shear plane, crucial for safety at extreme heights.

3. Energy & Infrastructure

  • Power Transmission Tower Assembly:Recommended: M16 * 75 / M20 * 90 | Grade 8.8 | Hot Dip Galvanized (HDG)Technical Insight: Specifically designed to withstand high wind loads. The HDG finish provides a self-healing zinc layer, essential for maintenance-free operation in remote mountainous or coastal regions.
  • Hydroelectric Turbine Housing:Recommended: M30 * 180 / M36 * 220 | Stainless Steel A4-80 (SS316) | PassivatedTechnical Insight: In constant contact with flowing water, the SS316 shank ensures the bolt won't corrode or "freeze" into the housing, allowing for structural integrity and easier long-term maintenance.

4. Agricultural & Specialized Vehicles

  • Tractor Chassis & Suspension Joints:Recommended: M14 * 90 / M16 * 110 | Grade 10.9 | Zinc PhosphatedTechnical Insight: Agricultural machinery faces unpredictable terrain. The DIN 931 shank provides a tight fit in the pivot points, reducing "play" and ensuring the suspension geometry remains stable under heavy load.
  • Harvester Blade Mounting:Recommended: M10 * 60 / M12 * 70 | Grade 12.9 | GeometTechnical Insight: High-speed rotation requires perfect balance. The precision-ground shank of the partial thread bolt ensures the blades are centered and can withstand the extreme centrifugal and impact forces.