Model: B490389

Externally Relieved Body Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.320 inches
Fastener Length
1.150 inches
Head Style
Dee chamfer
Head Diameter
0.512 inches
Head Height
0.150 inches
Distance From Centerline To Flat
Between 0.187 inches and 0.192 inches
Hole Diameter
Between 0.669 inches and 0.739 inches
First Diameter From Head
Between 0.190 inches and 0.195 inches
Second Diameter From Head
Between 0.190 inches and 0.195 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.310 inches and 0.340 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
Between 0.800 inches and 0.830 inches
Thread Diameter
0.250 inches
Hole Quantity
1
Hole Type
Drilled
Thready Qty Per Inch (tpi)
28
Hole Configuration Style
Round
Externally Relieved Body Diameter Quantity
2
Material
Stainless steel
Material Specification
Dtd 5066 fscm k0378 mfr ref single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Rsp 170 fscm k0378 mfr ref single treatment response
Thread Series Designator
Unjf
NSN
5306-01-175-8765
Part Number
B490389
Description
Bolt,externally Relieved Body
CAGE
K0378

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Part B490389 NSN 5306-01-175-8765

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06675
FIIG:
A003B0
Concept No.:
App. Key:
BF
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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