Hex Nut

...

Hex Nuts are the most versatile and widely used mating fasteners, featuring a six-sided design that provides ample wrenching surface for high-torque assembly. Functioning as the primary locking mechanism in bolted joints, they are critical for securing structural components, flanges, and machinery. Manufactured to precise standards like DIN 934, ISO 4032, and ASME B18.2.2, our Hex Nuts ensure distinct thread engagement and load distribution. At Inconel Fasteners, we produce these essential components from premium superalloys, including Inconel 625, 718, and Incoloy 825. This ensures they remain seizure-resistant and structurally sound even under extreme heat, cryogenic temperatures, and exposure to corrosive acids, where standard steel nuts would weld shut or disintegrate.

Detailed Specifications

Size Range
M3 to M120 Metric 1/4” to 5″ Imperial
Nut Types & Styles
Standard Hex (DIN 934) Heavy Hex (ASME B18.2.2) Lock Nut / Nylock Jam Nut (Thin) Flange Nut
Type of Threads
Metric Coarse Metric Fine UNC UNF 8UN (For Large Dia)
Standards & Tolerance
ASME B1.1 Class 2B/3B ISO 261 (6H Tolerance) ISO 4032 DIN 934
Type of Manufacturing
Hot Forged (Large Sizes) Cold Forged (Small Sizes) Machined from Bar Stock
Raw Material Origin
Indian Origin European Origin Japanese Origin US Origin Korean Origin
Finish Part Origin
Made in India Custom Origin per Request
Surface Coating (Anti-Galling)
Silver Plating (Critical for Inconel) Molybdenum Disulfide (MoS2) PTFE / Xylan Cadmium Plain / Oil Black
Marking
Manufacturer Logo Grade ID (e.g., 718) Heat Trace Code
Heat Treatment Details
Solution Annealing Age Hardening (Precipitation) Stress Relieving
Delivery Terms
Ex-Works (EXW) FOB CIF CFR DDP
Packing Type
Carton Boxes Wooden Pallets Wooden Crates VCI (Rust Preventative)
Payment Methods
L/C (Letter of Credit) T/T (Wire Transfer) Western Union
Certifications
ISO 9001:2015 MTC EN 10204 3.1 NACE MR0175
Additional Certifications
NABL Approved Lab Reports Third Party Inspection (TPI) Proof Load Test Certificate
Mandatory & Additional Requirements
Positive Material Identification (PMI) Proof Load Testing (Mandatory) Hardness Testing Dimensional Inspection

Available Inconel Grades & Standards

Dimensions Chart (DIN 934 Hex Nut)

Nominal Size (d) Pitch (P) Width Across Flats (s)
(Wrench Size)		 Nut Height (m)
(Max)		 Width Across Corners (e)
(Min)
M6 1.0 10 mm 5.0 mm 11.05 mm
M8 1.25 13 mm 6.5 mm 14.38 mm
M10 1.5 17 mm 8.0 mm 18.90 mm
M12 1.75 19 mm 10.0 mm 21.10 mm
M16 2.0 24 mm 13.0 mm 26.75 mm
M20 2.5 30 mm 16.0 mm 32.95 mm
M24 3.0 36 mm 19.0 mm 39.55 mm
M30 3.5 46 mm 24.0 mm 50.85 mm
M36 4.0 55 mm 29.0 mm 60.79 mm
M42 4.5 65 mm 34.0 mm 71.30 mm
M48 5.0 75 mm 38.0 mm 82.60 mm

Chemical Composition (Inconel Grades)

Grade Ni (Nickel) Cr (Chromium) Fe (Iron) Mo (Molybdenum) Nb (Niobium) Ti (Titanium) Other Elements
Inconel A286 (Gr. 660) 24.0 - 27.0% 13.5 - 16.0% Balance 1.0 - 1.5% - 1.9 - 2.35% V 0.1 - 0.5%, Al 0.35%
Inconel 718 50.0 - 55.0% 17.0 - 21.0% Balance 2.8 - 3.3% 4.75 - 5.5% 0.65 - 1.15% Al 0.2 - 0.8%
Inconel 625 58.0% Min 20.0 - 23.0% 5.0% Max 8.0 - 10.0% 3.15 - 4.15% 0.4% Max Al 0.4% Max
Inconel X-750 70.0% Min 14.0 - 17.0% 5.0 - 9.0% - 0.7 - 1.2% 2.25 - 2.75% Al 0.4 - 1.0%
Inconel 600 72.0% Min 14.0 - 17.0% 6.0 - 10.0% - - - Mn 1.0%, C 0.15%
Inconel 800 30.0 - 35.0% 19.0 - 23.0% 39.5% Min - - 0.15 - 0.60% Al 0.15 - 0.60%
Inconel 825 38.0 - 46.0% 19.5 - 23.5% 22.0% Min 2.5 - 3.5% - 0.6 - 1.2% Cu 1.5 - 3.0%

Mechanical Properties (Inconel Hex Nuts)

Grade Tensile Strength
(MPa / N/mm²) Min		 Yield Strength
(0.2% Offset) Min		 Elongation
(%) Min		 Hardness
(HRC / HB)
Inconel A286 (Gr. 660) 900 - 1100 600 - 800 15% 24 - 35 HRC
Inconel 718 1275 1035 12% 36 - 44 HRC
Inconel X-750 1100 700 15% 30 - 40 HRC
Inconel 625 827 414 30% 145 - 220 HB
Inconel 600 550 240 30% 65 - 85 HRB
Inconel 800 520 205 30% 75 HRB (Max)
Inconel 825 586 241 30% 135 - 165 HB

DIN Standards for Bolts

Comprehensive list of dimensional standards for industrial fasteners.

Series 100 - 900
  • DIN 186
  • DIN 188
  • DIN 261
  • DIN 444
  • DIN 479
  • DIN 580
  • DIN 601
  • DIN 603
  • DIN 604
  • DIN 605
  • DIN 610
  • DIN 787
  • DIN 797
  • DIN 931
  • DIN 933
  • DIN 933 SZ
Nuts & Precision
  • DIN 431
  • DIN 439 A/B
  • DIN 466
  • DIN 467
  • DIN 508
  • DIN 547
  • DIN 548
  • DIN 555
  • DIN 557
  • DIN 562
  • DIN 582
  • DIN 798
  • DIN 917
  • DIN 934
  • DIN 935
  • DIN 936
  • DIN 937
Studs & Washers
  • DIN 525
  • DIN 835
  • DIN 938
  • DIN 939
  • DIN 940
  • DIN 976
  • DIN 125 A/B
  • DIN 126
  • DIN 127 A/B
  • DIN 433
  • DIN 440 R/V
  • DIN 6796
  • DIN 7980
  • DIN 9021
Extended & Heavy Series
DIN 3570
DIN 7968
DIN 7969
DIN 7990
DIN 7992
DIN 70613
DIN 70614
DIN 80705
DIN 6331
DIN 6334
DIN 6915
DIN 6924
Product Categories