Set Screw

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Set Screws, often referred to as grub screws, are headless fasteners designed to secure an object within or against another object, typically without the use of a nut. Featuring an internal hex drive for high-torque tightening, they are essential for securing pulleys, gears, and collars to shafts in precision machinery. Manufactured to strict international standards such as DIN 913/914/915/916, ISO 4026, and ASME B18.3, these screws are engineered for maximum holding power and vibration resistance. At Inconel Fasteners, we provide premium Set Screws in high-performance grades like Inconel 600, 625, 718, and Monel, ensuring exceptional durability and corrosion resistance in high-temperature and chemically aggressive environments.

Detailed Specifications

Size
M1.6 to M64 Metric #0 to 4″ Imperial
Length
2mm to 300mm Custom Lengths Available
Type of Threads
Metric Coarse Metric Fine UNC UNF BSW BSF
Threads & Point Configuration
ASME B18.3 ISO 4026 (DIN 913) DIN 914 / 915 / 916 Class 6g
Type of Manufacturing
Machined Bars (CNC) Cold Forging Thread Rolling
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
Plain / Oil Black Black Oxide Zinc Plated Cadmium Nickel Silver Plated PTFE / Teflon
Marking
Grade ID (Where size permits) Heat Number (On Box) Traceability Labels
Heat Treatment Details
Quenching & Tempering Solution Annealing Age Hardening Stress Relieving
Delivery Terms
Ex-Works (EXW) FOB CIF CFR DDP
Packing Type
Small Carton Boxes Master Cartons Wooden Pallets Vacuum Packing (Optional)
Payment Methods
L/C (Letter of Credit) T/T (Wire Transfer) Western Union
Certifications
ISO 9001:2015 PED 2014/68/EU MTC EN 10204 3.1
Additional Certifications
NABL Approved Lab Reports Third Party Inspection (TPI) RoHS Compliance
Mandatory & Additional Requirements
Positive Material Identification (PMI) NACE MR0175 / ISO 15156 Torque Testing Hardness Testing

Available Inconel Grades & Standards

Dimensions Chart (DIN 913 / ISO 4026)

Nominal Size (d) Pitch (P) Hex Key Size (s)
(Metric)		 Hex Key Size (s)
(Imperial Equiv.)
M3 0.5 1.5 mm 1/16"
M4 0.7 2.0 mm 5/64"
M5 0.8 2.5 mm 3/32"
M6 1.0 3.0 mm 1/8"
M8 1.25 4.0 mm 5/32"
M10 1.5 5.0 mm 3/16"
M12 1.75 6.0 mm 7/32"
M16 2.0 8.0 mm 5/16"
M20 2.5 10.0 mm 3/8"
M24 3.0 12.0 mm 1/2"
M30 3.5 14.0 mm 9/16"

Chemical Composition (Inconel Grades)

Grade Ni (Nickel) Cr (Chromium) Fe (Iron) Mo (Molybdenum) Nb (Niobium) Co (Cobalt) Other Elements
Inconel 600 72.0% Min 14.0 - 17.0% 6.0 - 10.0% - - - Mn 1.0%, C 0.15%
Inconel 601 58.0 - 63.0% 21.0 - 25.0% Balance - - - Al 1.0 - 1.7%
Inconel 625 58.0% Min 20.0 - 23.0% 5.0% Max 8.0 - 10.0% 3.15 - 4.15% 1.0% Max Ti 0.4%, Al 0.4%
Inconel 718 50.0 - 55.0% 17.0 - 21.0% Balance 2.8 - 3.3% 4.75 - 5.5% 1.0% Max Ti 0.65 - 1.15%
Inconel X-750 70.0% Min 14.0 - 17.0% 5.0 - 9.0% - 0.7 - 1.2% 1.0% Max Ti 2.25 - 2.75%, Al 0.4 - 1.0%
Inconel 800 30.0 - 35.0% 19.0 - 23.0% 39.5% Min - - - Al 0.15 - 0.60%, Ti 0.15 - 0.60%
Inconel 825 38.0 - 46.0% 19.5 - 23.5% 22.0% Min 2.5 - 3.5% - - Cu 1.5 - 3.0%, Ti 0.6 - 1.2%

Mechanical Properties (Inconel Set Screws)

Grade Tensile Strength
(MPa / N/mm²) Min		 Yield Strength
(MPa / N/mm²) Min		 Elongation
(%) Min		 Hardness
(HRC / HB)
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 601 550 205 30% 60 - 80 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
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