Home » Socket Cap Head Screws (DIN 912 / ISO 4762)

Socket Cap Head Screws (DIN 912 / ISO 4762)

Question: What is a socket head cap screw?

Answer: A socket head cap screw is a fastener featuring an internal socket drive designed for use with a hex key, also known as an Allen key. This is why they are commonly referred to as Allen Key Bolts or Socket Screws. They are available in fully threaded or partially threaded forms.

Question: What is the ISO 4762 specification?

Answer: The ISO 4762 specification is an industry standard that defines the requirements for metric socket head cap screws. Fullerkreg's range of Cap Screws is manufactured in accordance with this standard.

Question: socket head cap screw ISO standard and DIN standard and GB  standard?

Answer: Regarding the ISO 4762 standard for hex socket head cap screws, the corresponding German (DIN) and Chinese National (GB) standards are as follows:

Standard Type Standard Number Correspondence Description
International Standard ISO 4762 (Benchmark Standard)
German Standard DIN 912 Content is consistent with ISO 4762, often jointly labeled as "DIN912/ISO4762"
Chinese National Standard GB/T 70.1 The latest version is GB/T 70.1-2008, technically equivalent to ISO 4762

*Subtle Differences: Although these three standards are technically equivalent at their core, there might be slight variations in certain details (such as dimensional tolerance ranges, specific requirements for surface treatment). For applications with stringent requirements, consulting the full original standard text is recommended.

*In most cases, hex socket head cap screws marked with ISO 4762, DIN 912, or GB/T 70.1 can be used interchangeably.

Question: Socket head cap screw Size chart & Socket head Cap Screw Dimensions pdf

Answer: Fullerkreg offers Metric Socket Cap Screws in sizes from M1.4 to M30, with lengths ranging from 2mm to 300mm. Both partially threaded and fully threaded varieties are available. For a detailed dimensions PDF, please contact Fullerkreg directly. Click download

Question: What are the available materials, strength grades for this series of Socket Cap Head Screws?

Answer: This series is available in a wide selection of materials including A2, A4, A4-80, Duplex and Bumax Stainless Steel, 12.9 High Tensile Steel, Aluminium, and Titanium. 

Question:Fullerkreg Allen Bolt VS YFS Socket Head Cap Screw, which one has better quality?

Answer:  YFS is a well-recognized brand in the industry known for its excellent product quality. Fullerkreg also strictly adheres to DIN 912 and ISO 4762 standards, offering various high-performance materials and specialized options, with additional competitive advantages in pricing.

Question: Is Fullerkreg a manufacturer of socket head cap screws? Where are they produced?

Answer: Yes, Fullerkreg is a manufacturer of socket head cap screws in CHINA.

 

DOWNLOAD DIN 912 TECH-INFO

 

DOWNLOAD
  DIN 912-1983.PDF DIN 912 INSPECTION REPORT PDF DIN 912 WEIGHT CHART PDF
SEE ONLINE Click din912 weight



Active Stock List (All items are currently in stock)：

PIC  PRODUCT     SIZE GRADE FINISH THREAD
DIN 912 / ISO 4762 Socket Cap Screw A2 Stainless Steel M1.4 to M30 A2 Grade 70 - Coarse Full
DIN 912 / ISO 4762 Socket Cap Screw A4 Stainless Steel M1.4 to M30 A4 Grade 70 - Coarse Full
DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8-Black M2.5 to M30 8.8 Grade Black Coarse
DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8-Zinc Cr3 M2.5 to M30 8.8 Grade Zinc Cr3 Coarse
DIN 912 / ISO 4762 Socket Cap Screw Grade 8.8 Fine Thread M6 to M30 8.8 Grade Black Fine
DIN 912 / ISO 4762 Socket Head Cap Screw Grade 10.9-Black M3 to M48 10.9 Grade Black Coarse
DIN 912 / ISO 4762 Socket Head Cap Screw Grade 10.9-Zinc Cr3 M3 to M48 10.9 Grade Zinc Cr3 Coarse
DIN 912 / ISO 4762 Socket Cap Screw Grade 12.9 M1.4 to M80 12.9 Grade Black Coarse
ISO 4762 Socket Head Cap Screw Alloy Steel Grade 12.9 M2 to M48 12.9 Grade(Alloy steel) Black Coarse
DIN 912 / ISO 4762 Socket Cap Screw Grade 12.9 Fine Thread M5 to M56 12.9 Grade Black Fine

 

DIN 912 Specification 


Down DIN 912 - 1983 Specification  pdf 


Thread Size M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12
d
P Pitch 0.35 0.4 0.45 0.5 0.7 0.8 1 1.25 1.5 1.75
dk max For plain heads 3 3.8 4.5 5.5 7 8.5 10 13 16 18
For knurled heads 3.14 3.98 4.68 5.68 7.22 8.72 10.22 13.27 16.27 18.27
min 2.86 3.62 4.32 5.32 6.78 8.28 9.78 12.73 15.73 17.73
da max 2 2.6 3.1 3.6 4.7 5.7 6.8 9.2 11.2 13.7
ds max 1.6 2 2.5 3 4 5 6 8 10 12
min 1.46 1.86 2.36 2.86 3.82 4.82 5.82 7.78 9.78 11.73
e min 1.733 1.733 2.303 2.873 3.443 4.583 5.723 6.863 9.149 11.429
k max 1.6 2 2.5 3 4 5 6 8 10 12
min 1.46 1.86 2.36 2.86 3.82 4.82 5.7 7.64 9.64 11.57
s Nominal Size 1.5 1.5 2 2.5 3 4 5 6 8 10
max 1.58 1.58 2.08 2.58 3.08 4.095 5.14 6.14 8.175 10.175
min 1.52 1.52 2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025
t min 0.7 1 1.1 1.3 2 2.5 3 4 5 6
w min 0.55 0.55 0.85 1.15 1.4 1.9 2.3 3.3 4 4.8
Length of Thread b 15 16 17 18 20 22 24 28 32 36
Thread Size (M14) M16 M20 M24 M30 M36 M42 M48 M56 M64
d
P Pitch 2 2 2.5 3 3.5 4 4.5 5 5.5 6
dk max For plain heads 21 24 30 36 45 54 63 72 84 96
For knurled heads 21.33 24.33 30.33 36.39 45.39 54.46 63.46 72.46 84.54 96.54
min 20.67 23.67 29.67 35.61 44.61 53.54 62.54 71.54 83.46 95.46
da max 15.7 17.7 22.4 26.4 33.4 39.4 45.6 52.6 63 71
ds max 14 16 20 24 30 36 42 48 56 64
min 13.73 15.73 19.67 23.67 29.67 35.61 41.61 47.61 55.54 63.54
e min 13.716 15.996 19.437 21.734 25.154 30.854 36.571 41.131 46.831 52.531
k max 14 16 20 24 30 36 42 48 56 64
min 13.57 15.57 19.48 23.48 29.48 35.38 41.38 47.38 55.26 63.26
s Nominal Size 12 14 17 19 22 27 32 36 41 46
max 12.212 14.212 17.23 19.275 22.275 27.275 32.33 36.33 41.33 46.33
min 12.032 14.032 17.05 19.065 22.065 27.065 32.08 36.08 41.08 46.08
t min 7 8 10 12 15.5 19 24 28 34 38
w min 5.8 6.8 8.6 10.4 13.1 15.3 16.3 17.5 19 22
Length of Thread b 40 44 52 60 72 84 96 108 124 140

 

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