Bulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black Oxide
M3 Flat Head Socket Cap screw Spec Sheet, Class 12.9 Flat head screws are used in machine parts, die fixturing, and especially common for removable panels and parts. Flat Heads are fully countersunk, so they become flush when installed. These are most often used for assembling close tolerance machinery where head clearance is critical.
M3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster Bolts
M3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster Bolts
M3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster Bolts
Bulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black Oxide
Bulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black Oxide
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Bulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black OxideM3 Flat Head Socket Cap screw Spec Sheet, Class 12.9 Flat head screws are used in machine parts, die fixturing, and especially common for removable panels and parts. Flat Heads are fully countersunk, so they become flush when installed. These are most often used for assembling close tolerance machinery where head clearance is critical.M3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster BoltsM3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster BoltsM3 Flat Head Socket Cap screws, Class 12.9 Alloy Steel w/ Black Oxide - Monster BoltsBulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black OxideBulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black Oxide

Bulk M3 Flat (Countersunk) Socket Cap Screws – 12.9 Alloy Steel, Black Oxide

MonsterBULKS
Length: 2500 Qty - M3-0.50 x 5mm
Price:
$115.67

Description

Monster Bolts – Bulk Fasteners

Monster Overview:

Achieve a flush, snag-free finish with M3 Flat (Countersunk) Socket Cap Screws in bulk. Made from Class 12.9 alloy steel and treated with a thermal black oxide finish, these screws deliver high tensile strength and a clean, low-glare look. The countersunk head seats flush with the surface—perfect for panels, machine guards, enclosures, and precision assemblies.

Quality & Supply: Each lot meets or exceeds Monster Bolts’ demanding quality standards for consistent drive fit and clamp force. Keep your builds moving with fast U.S. shipping and dependable bulk supply.

Monster Features:

  • High Strength: Class 12.9 alloy steel for demanding torque applications.
  • Flush Finish: 90° countersunk head sits level with the work surface for a clean result.
  • Hex Drive: 2.0 mm internal hex for positive torque transfer and repeatable installs.
  • Thermal Black Oxide: Low-gloss, lightly oiled finish for mild corrosion resistance; RoHS compliant.
  • Standards: Countersunk geometry to DIN 7991 / ISO 10642.

Monster Specifications

Feature Details
Diameter / Thread M3-0.50 (coarse, standard metric)
Head / Angle Flat (Countersunk), 90° included angle
Head / Drive Socket — Hex 2.0 mm
Material / Grade Black Alloy Steel, Class 12.9
Finish Thermal Black Oxide (light oil; RoHS compliant)
System of Measurement Metric
Standards DIN 7991 / ISO 10642

More Monster Bolts:

• M2 Hex Keys
• Matching M3 Nuts & Washers
• All Bulk Metric Flat (CSK) Socket Screws

Order Today and Experience the Monster Bolts Difference

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

Note: Bulk shipping times can vary slightly based on inventory location and order size. Most orders ship quickly; smaller bulk quantities may take a few extra days to process.

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