DIN 938 Double End Stud Bolts with Thread Engagement Length Equals to 1 x Diameter

DIN 938 This document specifies stud bolts with an engagement-side thread length bm of approximately 1 d in product class A with metric coarse threads from M3 to M52 and metric fine threads from M8×1 to M52×3.
Stud bolts according to this standard are primarily intended for threading into steel.

DIN 938 Equivalents

PN 82125 UNI 5911 CSN 21174

DIN 938 Double End Stud Bolts with Thread Engagement Length Equals to 1 x Diameter
Studs With Engagement Lengthd

DIN 938 Dimensions

Size (d) bm a b c x1d x2d Shank Dia (Ds)
Max Min.
DIN 938 – M3 3 12 18 - 1 1 3 2.98
DIN 938 – M4 4 14 20 - 2 1 4 3.98
DIN 938 – M5 5 16 22 - 2 1 5 4.98
DIN 938 – M6 6 18 24 - 3 1 6 5.98
DIN 938 – M7 7 20 26 - 3 1 7 6.97
DIN 938 – M8 8 22 28 - 3 2 8 7.97
DIN 938 – M10 10 26 32 45 4 2 10 9.97
DIN 938 – M12 12 30 36 49 4 2 12 11.97
DIN 938 – M14 14 34 40 53 5 3 14 13.97
DIN 938 – M16 16 38 44 57 5 3 16 15.97
DIN 938 – M18 18 42 48 61 6 3 18 17.97
DIN 938 – M20 20 46 52 65 6 3 20 19.96
DIN 938 – M22 22 50 56 69 6 3 22 21.96
DIN 938 – M24 24 54 60 73 8 4 24 23.96
DIN 938 – M27 27 60 66 79 8 4 27 26.96
DIN 938 – M30 30 66 72 85 9 5 30 29.96
DIN 938 – M33 33 72 78 91 9 5 33 32.95
DIN 938 – M36 36 78 84 97 10 5 36 35.95
DIN 938 – M39 39 84 90 103 10 5 39 38.95
DIN 938 – M42 42 90 96 109 11 6 42 41.95
DIN 938 – M45 45 96 102 115 11 6 45 44.95
DIN 938 – M48 48 102 108 121 13 6 48 47.95
DIN 938 – M52 52 110 116 129 13 6 52 51.95

DIN 938 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