Model: MILB857

Machine Bolt

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.875 inches
Fastener Length
2.250 inches
Head Style
Hexagon
Head Height
Between 0.195 inches and 0.234 inches
Width Between Flats
Between 0.484 inches and 0.500 inches
Thread Diameter
0.312 inches
Grip Length
1.375 inches
Features Provided
Unfinished head
Thready Qty Per Inch (tpi)
18
Min. Tensile Strength (psi)
120000 pounds per square inch
Hardness Rating
23.0 rockwell c and 32.0 rockwell c
Material
Steel
Thread Series Designator
Unc
Nondefinitive Specification/std Data
1 type and 5 grade
NSN
5306-00-226-1507
Part Number
MILB857
Description
Bolt,machine
CAGE
81349

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 MILB857 NSN 5306-00-226-1507

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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