Model: 138912

Externally Relieved Body Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.300 inches and 0.330 inches
Fastener Length
1.880 inches
Head Style
Flat chamfer
Head Diameter
Between 0.490 inches and 0.519 inches
Head Height
0.120 inches
Shank Unthreaded Hole Diameter
0.073 inches first hole
First Diameter From Head
Between 0.344 inches and 0.345 inches
Second Diameter From Head
Between 0.341 inches and 0.342 inches
Third Diameter From Head
0.240 inches
Fourth Diameter From Head
Between 0.305 inches and 0.312 inches
Fifth Diameter From Head
0.240 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.265 inches and 0.305 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
0.275 inches
Distance From Largest Bearing Surface Of Head To End Of Third Diameter
0.855 inches
Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter
1.850 inches
Thread Diameter
0.312 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
1.760 inches first hole
Externally Relieved Body Diameter Quantity
5
Material
Steel comp 4140 or steel comp 8740
Thread Series Designator
Unf
NSN
5306-00-302-8637
Part Number
138912
Description
Bolt,externally Relieved Body
CAGE
0AHP5

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 138912 NSN 5306-00-302-8637

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
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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