Technical Specifications

DIN 933 / ISO 4017 / ASME B18.2.1 Hex Head Bolts Full Thread 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet
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DIN 933 / ISO 4017 / ASME B18.2.1 Hex Head Bolts Full Thread 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet
DIN 933 / ISO 4017 / ASME B18.2.1 Hex Head Bolts Full Thread 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet
DIN 933 / ISO 4017 / ASME B18.2.1 Hex Head Bolts Full Thread 4.8 / 5.8 / 8.8 / 10.9 / 12.9 Plain, Black Oxide, Zinc Plated (Cr3+), Hot Dip Galvanized, Dacromet

Standard

DIN 933 / ISO 4017 / ASME B18.2.1

Specification

M3 - M64

Material

Carbon Steel / Alloy Steel / Stainless Steel

Property Class

4.8 / 5.8 / 8.8 / 10.9 / 12.9

Finish

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

Product Description

Metric Coarse, Fine Thread Available.

Technical Data & Drawings
Model: DIN 933 / ISO 4017 / ASME B18.2.1 Hex Head Bolts Full Thread pdf
Dimension CodeSpecification (mm)
d
P
L
L (max)
L (min)
da (max)
e (min)
k (min)
k (max)
r (min)
s (max)
s (min)

Technical Specifications

DIN 933-1987 Hex Head Bolts Full Thread
Product No.
DIN 933
Product Specification
M1.6 * 2
Product Standard
DIN 933-1987
Material Grade
—
Unit
mm
Mechanical Property
5.6、8.8、10.9； d＞M39：custom / DIN ISO 898-1
Dimension CodeSpecification (mm)Dimension CodeSpecification (mm)
dDiameterM1.6PPitch0.35
LLength2L(max)Lmax2.2
L(min)Lmin1.8da(max)damax2
e(min)emin3.41k(min)kmin0.98
k(max)kmax1.22r(min)rmin0.1
s(max)smax3.2s(min)smin3.02
Other Requirements
Technical Conditions
MaterialTypeSteelGeneral Technical ConditionsDIN 267-1
Grade
ThreadTolerance6gMechanical PropertyClass5.6、8.8、10.9； d＞M39：custom
StandardDIN 13-15、DIN 13-12StandardDIN ISO 898-1
ToleranceProduct Graded≤24mm & l ≤ min(10d, 150mm):A; d＞24mm || l ＞ min(10d, 150mm)：BSurface TreatmentPlating: DIN 267-9 HDG: DIN 267-10
StandardISO 4759-1
Surface RoughnessDIN 267-2Surface DefectDIN 267-19
Acceptance & PackingDIN 267-5Reference Weight per 1000 (kg)

Industrial Applications

1. Energy & Power Infrastructure

   Solar PV Racking Systems:
    • Recommended: M10 * 40 / M12 * 45 | Grade 8.8 | Hot Dip Galvanized (HDG)
    • Technical Insight: Designed for a 25-year outdoor lifespan. HDG provides a thick zinc barrier against UV and rain-induced corrosion.
    • Alternatively, for aluminum-to-aluminum panel clamping, the solar industry also frequently uses A2-70 (304) or A4-70 (316) Stainless Steel bolts pre-coated with anti-galling wax.
   Wind Turbine Internals:
    • Recommended: M16 * 60 / M20 * 80 | Grade 10.9 | Dacromet
    • Technical Insight: Ideal for high-vibration environments. Dacromet prevents hydrogen embrittlement, ensuring the safety of high-tensile connections.

2. Fluid Engineering & Valves

   Pipe Flange Connection:
    • Recommended: M16 * 70 / M20 * 90 | Stainless Steel A4-80 (SS316) | Passivated
    • Technical Insight: When handling corrosive media or in coastal areas, SS316 offers superior pitting resistance compared to standard steel.
   Submersible Pump Assembly:
    • Recommended: M8 * 30 / M10 * 40 | Stainless Steel A2-70 (SS304) | Plain
    • Technical Insight: For continuous submersion, SS304 prevents thread seizing, allowing for easier disassembly and maintenance.

3. Construction & Specialized Structures

   Glass Curtain Wall Fastening
    • Recommended: M12 * 50 / M14 * 60 | SS304 or Grade 10.9 HDG
    • Technical Insight: Balances aesthetics with load-bearing capacity. The full-thread design allows for precise depth adjustment during bracket installation.
   Elevator Guide Rail Fastening:
    • Recommended: M12 * 40 / M16 * 50 | Grade 8.8 | Yellow Zinc Plated
    • Technical Insight: For dry indoor environments, yellow zinc provides basic rust protection, while Grade 8.8 handles the shear forces of moving elevators.

4. Transportation & Automotive

   Commercial Vehicle Chassis:
    • Recommended: M14 * 50 / M16 * 60 | Grade 10.9 | Zinc Phosphated
    • Technical Insight: Phosphating ensures a stable friction coefficient, combined with high-tensile steel to prevent loosening under road vibration.
   Marine Interiors & Engine Rooms:
    • Recommended: M6 * 20 / M8 * 40 | Stainless Steel A4-80 | Polished
    • Technical Insight: To withstand high humidity and salinity in engine rooms, A4 (316) is the gold standard for preventing metal fatigue and corrosion.