DIN 6334 Hex Coupling Nuts | Manufacturer & Global Exporter | DIPTI METAL INDUSTRIES

DIN 6334 Hex Coupling Nuts – Manufacturer & Global Exporter

DIPTI METAL INDUSTRIES is a trusted manufacturer, exporter, and stockist of DIN 6334 Hexagon Coupling Nuts in Mumbai, India, engineered for high-performance fastening applications across industries. Also known as extension nuts, these elongated, fully-threaded hex nuts are ideal for joining two externally threaded components such as threaded rods and studs.

Product Overview

Standard: DIN 6334 (German Standard – Deutsches Institut für Normung)
Design: Elongated Hex Coupling Nut, fully threaded
Thread Type: Metric Coarse (ISO)
Height: 3 × Nominal Diameter (3×D)
Applications: Structural connections, tension rods, splicing of studs/bolts, scaffolding, industrial assemblies

Size Range & Dimensions

Available in metric thread sizes from M6 to M36, with precision machining and standard-compliant tolerances:

Size (d)	Across Flats (s)	Length (L)	Weight (kg/1000 pcs)
M6	10 mm	18 mm	7 kg
M10	17 mm	30 mm	42 kg
M16	24 mm	48 mm	122 kg
M24	36 mm	72 mm	412 kg
M36	55 mm	108 mm	1470 kg

(Complete size chart available upon request)

Material Options – Stainless Steel Grades

DIN / EN Grades: 1.4301, 1.4306, 1.4401, 1.4541, 1.4571, 1.4828, 1.4878, 1.4845
AISI / ASTM: AISI 304L, 316L, 316Ti, 321, 410, 17-4PH
ISO 3506 Classes: A2-50, A2-70, A4-50, A4-70, A4-80
ISO 898 Classes: 5.6, 8.8, 10.9, 12.9
ASTM / ASME Grades: SA-193 B5–B8C, SA-320 L7, SA-540 B21–B24V, SA-194 2H–8C
Alloys: Duplex (1.4462), Super Duplex (1.4410), Hastelloy, Inconel, Monel, Titanium, Nitronic

Thread Forms, Coatings & Heat Treatments

Thread Forms: Metric Coarse/Fine, UNC, UNF, UNS, BSW, BSF
Heat Treatments: Quenching, Tempering, Nitriding, Case Hardening, Solution Annealing
Coatings: Zinc, Hot Dip Galv, PTFE, Teflon, Xylan, Phosphate, Cadmium