DIN 939 Double End Stud Bolts with Thread Engagement Length Equals to 1.25 x Diameter

Stud bolts according to DIN 939 standard are primarily used for screwing into cast iron. For the thread on the screw-in end, tolerance zone Sk 6 according to DIN 13-51 applies in accordance with DIN 267-2, unless Fo (= without interference fit thread) or Sn 4 is specified in the designation.

DIN 939 Equivalents

PN 82131 CSN 21176

DIN 939 Double End Stud Bolts with Thread Engagement Length Equals to 1 x Diameter

DIN 939 Dimensions

Size (d) b1 a b c x1 x2 Shank Dia (Ds)
Max Min.
DIN 939 – M4 5 14 20 1,75 0,9 4 3.98
DIN 939 – M5 6,5 16 22 2,0 1,0 5 4.98
DIN 939 – M6 7,5 18 24 2,5 1,25 6 5.98
DIN 939 – M7 9 20 26 2,5 1,25 7 6.97
DIN 939 – M8 10 22 28 3,2 1,6 8 7.97
DIN 939 – M10 12 26 32 45 3,8 1,9 10 9.97
DIN 939 – M12 15 30 36 49 4,3 2,2 12 11.97
DIN 939 – M14 18 34 40 53 5,0 2,5 14 13.97
DIN 939 – M16 20 38 44 57 5,0 2,5 16 15.97
DIN 939 – M18 22 42 48 61 6,3 3,2 18 17.97
DIN 939 – M20 25 46 52 65 6,3 3,2 20 19.96
DIN 939 – M22 28 50 56 69 6,3 3,2 22 21.96
DIN 939 – M24 30 54 60 73 7,5 3,8 24 23.96
DIN 939 – M27 35 60 66 79 7,5 3,8 27 26.96
DIN 939 – M30 38 66 72 85 9,0 4,5 30 29.96
DIN 939 – M33 42 72 78 91 9,0 4,5 33 32.95
DIN 939 – M36 45 78 84 97 10,0 5,0 36 35.95
DIN 939 – M39 50 84 90 103 10,0 5,0 39 38.95
DIN 939 – M42 52 90 96 109 11,0 5,5 42 41.95
DIN 939 – M45 58 96 102 115 11,0 5,5 45 44.95
DIN 939 – M48 60 102 108 121 12,5 6,3 48 47.95
DIN 939 – M52 65 110 116 129 12,5 6,3 52 51.95

DIN 939 Double End Stud Length Tolerance as per ISO 4759-1 Product Grade A IT13(h13)

Nominal Dimension Range (mm) JS15 Tolerance (± mm)
> 0 – 3 ±0.12
> 3 – 6 ±0.16
> 6 – 10 ±0.20
> 10 – 18 ±0.26
> 18 – 30 ±0.32
> 30 – 50 ±0.40
> 50 – 80 ±0.50
> 80 – 120 ±0.63
> 120 – 180 ±0.80
> 180 – 250 ±1.00
> 250 – 315 ±1.25

ASME Material Specifications

ASTM A193/A193M Bolting, Stud Bolts, Screws
ASTM A320/A320M Bolting, Stud Bolts, Screws
ASTM A354 Bolts
ASTM A449 Hex Cap Screws, Bolts, Studs
ASTM A453/A453M Bolting, Stud Bolts, Screws, Nuts
ASTM A574/A574M Standard Specification for Alloy Steel Socket Head Cap Screws
ASTM A1014/A1014M UNS N07718 Bolting, Stud Bolts, Screws, Nuts
ASTM A1082/A1082M Bolting, Stud Bolts, Screws, Nuts
ASTM F1554 Anchor Bolts, Anchor Rods
ASTM F2882 Stud Bolts, Screws, Threaded Rod
ASTM F3042 Socket Set, Square Head Slotted Headless Screw
ASTM F3125/F3125M Heavy Hex Bolts, Screws, Studs
ASTM F468/F468M Bolting, Stud Bolts, Screws
ASTM F593 Bolting, Stud Bolts, Screws
ASTM F738/F738M Stud Bolts, Screws
ASTM F835/F835M Standard Specification for Alloy Steel Socket Button and Flat Countersunk Head Cap Screws
ASTM F837/F837M Standard Specification for Stainless Steel Socket Head Cap Screws
ASTM F880/F880M Standard Specification for Stainless Steel Socket Set Screws
ASTM F901 Aluminium Transmission Tower Bolts
ASTM F912/912M Standard Specification for Alloy Steel Socket Set Screws

EN Material Specifications

EN 10269 Bolting Fasteners, Bolting Stud Bolts, Screws, Nuts, Washers

ISO Material Specifications

ISO 898-1 Bolting Fasteners, Bolting Stud Bolts, Screws
ISO 3506-1 Bolting, Stud Bolts, Screws, Nuts
ISO 3506-5 Bolting, Stud Bolts, Screws, Nuts