Model: 3971 1/4

Twist Drill

Special Features:

Threaded hex shank; long length; fractional size 1/4

Properties:

Shank Style
Externally threaded w/hex nut
Overall Length
Between 2.312 inches and 2.500 inches
Thread Diameter
0.250 inches
Cutting End Style
General purpose
Cutting Diameter
0.2500 inches
Cutting Rotation Direction
Right-hand
Flute Length
Between 1.188 inches and 1.250 inches
Flute Quantity
2
Point Type
Split
Thread Quantity
28 per inch
Point Angle
135.0 degrees
Material
Steel, cobalt high speed
Supplementary Features
O/a length does not include the thread length past the hexagon nut, threads = 1/4 in. (+1/16 in.)
Thread Series Designator
Unf
Specification Data
80205-nas965 professional/industrial association standard
Nondefinitive Specification/std Data
D type and 1/4 size
NSN
5133-01-050-3672
Part Number
3971 1/4
Description
Drill,twist
CAGE
03882

An end cutting tool having two or more cutting edges, and having helical flutes or grooves adjacent thereto for the admission of coolant and the ejection of cuttings or chips. It is used for drilling holes in various materials. Excludes drill, masonry (as modified); and drill,twist, bone. See also drill, pivot, jeweler's and drill, hardened steel, carbide tipped.

Part 3971 1/4 NSN 5133-01-050-3672

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05237
FIIG:
A188A0
Concept No.:
App. Key:
L
Cond. Code:
1
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
186620
UFC:
91810
LTL:
RATING VARIABLE
LCL:
--
WCC:
732
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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