Model: MM312-4

Countersink

Properties:

Shank Diameter
0.250 inches
Shank Style
Straight round
Overall Length
Between 1.688 inches and 2.250 inches
Body Diameter
0.438 inches
Cutting End Style
Straight flute point end
Cutting Rotation Direction
Right-hand
Flute Quantity
3
Hardness Rating
Between 40.0 rockwell c and 53.0 rockwell c
Included Angle
78.0 degrees
Material
Steel
NSN
5133-00-411-2333
Part Number
MM312-4
Description
Countersink
CAGE
08295

An angular cutting tool, usually made with angular relief, having one or more flutes with specific size angle cutting edges. It is used for chamfering and countersinking holes. The tool may have a straight shank, tapered shank, bit stock shank or special shank requiring a special holder, for holding in a power- or hand-operated machine. It may be designed to be driven or turned by means of a wrench or carpenter's brace. For items requiring a holder but the holder is not included, use cutter, countersink.

Part MM312-4 NSN 5133-00-411-2333

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05260
FIIG:
A188A0
Concept No.:
App. Key:
G
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8205100000
  • SITC: 69541
  • End Use: Photo, service industry machinery
  • NAICS: 332216
  • USDA: 1

Freight Class: Drilling, threading or tapping tools and parts thereof, base metal

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