Description

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.



