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Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 50M

Diameter - Thread Pitch: M12-1.25

Hex head for standard wrench or socket installation
Class 10.9 high-strength steel – approximately 1,040 MPa tensile strength
Known as a hex cap screw or tap bolt, these are fully threaded
Zinc plated finish – RoHS compliant corrosion protection
M12 x 1.25mm fine thread pitch – multiple lengths available

Manufactured from Class 10.9 high-strength steel, this M12 x 1.25mm fine thread hex tap bolt provides maximum thread engagement for applications requiring precise tensioning and superior vibration resistance. The 1.25mm pitch is finer than both the standard M12 coarse (1.75mm) and standard fine (1.5mm) threads, offering the tightest helix angle available in this diameter for critical assemblies where loosening cannot be tolerated. With approximately 1,040 MPa tensile strength and a zinc plated finish for RoHS compliant corrosion protection, these tap bolts are specified for hydraulic systems, precision machinery, motorsport components, and instrumentation mounts demanding the highest combination of strength and thread security.

A Hex Bolt is measured as: Diameter - Thread Pitch x Length from Under Head
FT = Full Thread
PT = Partial Thread

Product number: MHBZP109SF1250

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Specifications

Across Flats (Width): 19mm (Max 19.00mm - Min 18.67mm)
Additional Sizing Info: FT = Full Thread, PT = Partial Thread
Color: Silver
Diameter: M12
Drive Style: External Hex
Head Type: Hex Head
Thread Direction: Right Hand
Thread Type: Fine
Finish: Zinc Plated
Fit: 6g
Grade: 10.9 (Grade 8 Metric Equivalent)
Head Height: Max 7.68 - Min 7.32
Head Height Basic: 7.5 mm
Head Style: Hex
Length: 50mm
Material: Steel
Product Type: Metric Hex Cap Screw
System of Measurement: Metric
Thread Direction: Right Hand
Thread Pitch: 1.25 mm
Thread Size: M12-1.25
Thread Standard: UNF
Thread Type: Fine
Tolerance (IFI): Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Wrench Size: 19mm

Select Size/SKU & Quantity

6 Available Sizes

SIZE/SKU	Review Volume Pricing*	Enter Any Qty
M12-1.25 x 50M MHBZP109SF1250	1 $1.27 ($1.27/ea) 100 $112.00 ($1.12/ea) 1000 $1,020.00 ($1.02/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 50M $0.00
M12-1.25 x 55M MHBZP109SF1255	1 $1.31 ($1.31/ea) 100 $116.00 ($1.16/ea) 1000 $1,050.00 ($1.05/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 55M $0.00
M12-1.25 x 60M MHBZP109SF1260	1 $1.45 ($1.45/ea) 100 $129.00 ($1.29/ea) 1000 $1,170.00 ($1.17/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 60M $0.00
M12-1.25 x 70M MHBZP109SF1270	1 $1.56 ($1.56/ea) 100 $138.00 ($1.38/ea) 1000 $1,260.00 ($1.26/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 70M $0.00
M12-1.25 x 80M MHBZP109SF1280	1 $1.83 ($1.83/ea) 100 $163.00 ($1.63/ea) 1000 $1,480.00 ($1.48/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 80M $0.00
M12-1.25 x 90M MHBZP109SF1290	1 $2.41 ($2.41/ea) 100 $217.00 ($2.17/ea) 1000 $1,970.00 ($1.97/ea)	Quantity for Metric Hex Tap Bolt, Class 10.9, Zinc Plated Steel, M12 x 1.25 x 90M $0.00