Model: MILB857

Machine Bolt

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.500 inches
Fastener Length
0.750 inches
Head Style
Hexagon
Head Height
Between 0.150 inches and 0.163 inches
Width Between Flats
Between 0.425 inches and 0.437 inches
Shank Unthreaded Hole Diameter
0.078 inches first hole
Thread Diameter
0.250 inches
Grip Length
0.250 inches
Features Provided
Finished head
Thready Qty Per Inch (tpi)
28
Distance From Head Largest Bearing Surface To Shank Hole Center
0.641 inches first hole
Material
Steel comp 303 or steel comp 302 or steel comp 304
Material Specification
Qq-s-794 cond a or c federal specification 1st material response or qq-s-763 cond a or c federal specification 2nd material response
Surface Treatment
Passivate
Thread Series Designator
Unf
Nondefinitive Specification/std Data
2 type
Departure From Cited Designator
As mod by cotter pin hole
NSN
5306-00-905-2808
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 5306-00-905-2808

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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