Carbon Steel Gr12.9 Black Oxide ASTM High Strength Bolts Hex Bolt
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Carbon Steel Gr12.9 Black Oxide ASTM High Strength Bolts Hex Bolt

Material: Alloy Steel

Finish: Black Oxide

Standard: DIN933

Certification: ISO9001

MOQ:1000PCS

Samples: Free

Place of Origin: Zhejiang China

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Product Details

Product Description
Finish & Surface Treatment
Dimensional Range
Quality Assurance

• Standard: DIN 933 (ISO 4017) – fully threaded hexagon head bolt, commonly called hex cap screw or hex head machine bolt.
• Material: Medium-carbon or low-carbon steel (C1018–C1035, 35K, 45K, etc.).
• Strength grades: 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 per ISO 898-1.

Standard: DIN933
Size: M5-M100
Material: Alloy steel
Grade: Grade12.9
 Thread: Metric
Finish: Black Oxide
Packing: Cartons+wood Pallet or according to customer special demand
Application: Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Trade Term: FOB/CIF/CFR/CNF/EXW/DDU/DDP
Payment T/T, L/C
Market: South&north Amrica/Europe/East&South east Asia/ Australia and ect.
Our advantage: One-stop shopping;
High quality;
Competitive price;
Timely delivery;
Technical support;
Supply Material and Test Reports;

DIN933
Screw Thread  d Pitch   P k s
max min max min
M5 0.8 3.74 3.26 8 7.64
M6 1 4.42 3.76 10 9.64
M7 1 5.04 4.56 11 10.57
M8 1.25 5.54 5.06 13 12.57
M10 1.5 6.69 6.11 17 16.57
M12 1.75 7.79 7.21 19 18.48
M14 2 9.09 8.51 22 21.16
M16 2 10.29 7.91 24 23.16
M18 2.5 11.85 11.15 27 26.15
M20 2.5 12.85 12.15 30 29.16
M22 2.5 14.35 13.65 32 31
M24 3 15.35 14.65 36 35
M27 3 16.65 17.35 41 40
M30 3.5 19.12 18.28 46 45
M33 3.5 21.42 20.58 50 49
M36 4 22.92 22.08 55 53.8

 

• Black oxide conversion coating per MIL-DTL-13924 / ASTM D769.
• Post-treatment oil dip for 96-hour indoor rust inhibition.
• Minimal dimensional change (< 0.0002″), matte black appearance reduces glare.
• RoHS compliant, no hexavalent chromium.

• Metric: M3 – M52 (coarse pitch 6g; fine 4g6g on request)
• Imperial: #10 – 2-1/2″ UNC/UNF
• Length: 6 mm – 500 mm (1/4″ – 20″)
• Head: DIN/ISO hex profile, width across flats and height per DIN 933 tables.

• 100 % dimensional check with Go/No-Go gauges.
• Spectrometer batch certification (EN 10204 3.1).
• Salt-spray test 48–96 h for black-oxide + oil finish.
• Random wedge tensile & proof-load tests per ISO 898-1.