Model: NAS428HK4-12

Machine Bolt

Special Features:

Slotted shank

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 1.188 inches and 1.219 inches
Fastener Length
Between 1.250 inches and 1.313 inches
Head Style
Crowned hexagon
Head Height
0.141 inches
Width Between Flats
0.438 inches
Hole Diameter
Between 0.045 inches and 0.050 inches
Thread Diameter
0.250 inches
Grip Length
Between 0.062 inches and 0.301 inches
Hole Quantity
1
Hole Type
Drilled
Features Provided
Finished head
Thready Qty Per Inch (tpi)
28
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Minimum Yield Strength
125000 pounds per square inch
Hole Configuration Style
Hexagon flats
Material
Steel
Surface Treatment
Cadmium
Thread Series Designator
Unf
NSN
5306-01-353-0286
Part Number
NAS428HK4-12
Description
Bolt,machine
CAGE
80205

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

Part NAS428HK4-12 NSN 5306-01-353-0286

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01847
FIIG:
A003B0
Concept No.:
App. Key:
BR
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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