Bulk M12-1.25 Extra Fine Thread Socket Head Cap Screws – 12.9 Alloy Steel, Black Oxide


Length: 400 QTY - M12-1.25 x 20mm
Price:
Sale price$156.77

Description

Monster Bolts Fasteners Logo - Bulk M12-1.25 Ultra-Fine Thread Socket Head Cap Screws

Monster Overview:

Designed for precision assemblies requiring the highest thread engagement accuracy, M12-1.25 Ultra-Fine Thread Socket Head Cap Screws from Monster Bolts deliver superior strength and control. Constructed from Class 12.9 alloy steel and finished with a thermal black oxide coating, these screws combine maximum tensile performance with clean appearance and consistent torque control. The 1.25 mm ultra-fine pitch ensures smooth adjustment and improved preload stability in high-vibration environments.

Quality & Supply: Every batch meets Monster Bolts’ strict specifications for dimensional accuracy, finish, and drive fit. Bulk cartons ship fast from U.S. stock to support continuous production. RoHS compliant.

Monster Features:

  • Ultra-Fine Pitch: M12-1.25 thread for superior load distribution and fine torque adjustment in critical assemblies.
  • High Strength: Class 12.9 alloy steel construction ensures peak tensile and preload capacity.
  • Precision Drive: 10.0 mm hex socket offers firm driver engagement and consistent torque delivery.
  • Socket Cap Design: Deep cylindrical head provides concentrated clamping force in confined spaces.
  • Thermal Black Oxide: Smooth, lightly oiled, low-glare finish for mild protection; fully RoHS compliant.
  • Standards: Built to DIN 912 / ISO 4762 for full metric interchangeability.

Monster Specifications

Feature Details
Diameter / Thread M12-1.25 (Ultra-fine thread)
Thread Pitch 1.25 mm (ultra-fine)
Drive Size Hex 10.0 mm
Head Type Socket Head Cap Screw — Cylindrical, deep-drive design
Material / Grade Black Alloy Steel, Class 12.9
Finish Thermal Black Oxide (light oil; mild protection; RoHS compliant)
System of Measurement Metric
Standards DIN 912 / ISO 4762

Length Measurement: Socket head cap screws are measured from under the head to the tip of the screw.
Note: “PT” denotes Partial Thread versions.

More Monster Bolts:

M10 Hex Keys
Matching M12 Nuts & Washers
All Bulk Metric Socket Cap Screws

Order Today and Experience the Monster Bolts Difference

Buy with confidence — every Monster Bolts bulk order is backed by consistent quality, quick U.S. fulfillment, and responsive support. MTRs available on request for unopened bulk cartons.

Note: Bulk shipping times may vary slightly depending on order size and stock location. Most orders ship within a few business days.

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