Model: 643408

Externally Relieved Body Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.250 inches
Fastener Length
3.125 inches
Head Style
Hexagon
Head Height
0.375 inches
Width Between Flats
0.750 inches
Hole Diameter
0.070 inches
First Diameter From Head
0.500 inches
Second Diameter From Head
0.445 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.188 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
1.875 inches
Thread Diameter
0.500 inches
Hole Quantity
1
Hole Type
Drilled
Thready Qty Per Inch (tpi)
13
Min. Tensile Strength (psi)
15000 pounds per square inch
Hardness Rating
18.0 rockwell c and 25.0 rockwell c
Hole Configuration Style
Hexagon flats
Externally Relieved Body Diameter Quantity
2
Material
Steel
Thread Series Designator
Unc
NSN
5306-00-285-1239
Part Number
643408
Description
Bolt,externally Relieved Body
CAGE
58275

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 643408 NSN 5306-00-285-1239

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

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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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