Model: 81439-6-2

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.617 inches
Fastener Length
2.004 inches
Head Diameter
Between 0.545 inches and 0.546 inches
Head Height
0.710 inches
Hole Diameter
0.106 inches
First Diameter From Head
0.373 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.980 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
2.004 inches
Internal Drive Style
Hexagon
Thread Diameter
0.375 inches
Width Across Flats
Between 0.312 inches and 0.316 inches
Hole Quantity
2
Hole Type
Drilled
Thready Qty Per Inch (tpi)
24
Hole Configuration Style
Round
Externally Relieved Body Diameter Quantity
2
Material
Steel comp 4340
Material Specification
Ams 6414 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Bac 5424 class a fscm 77272 mfr ref single treatment response
Thread Series Designator
Unjf
NSN
5306-01-216-7885
Part Number
81439-6-2
Description
Bolt,internal Wrenching
CAGE
56878

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

Part 81439-6-2 NSN 5306-01-216-7885

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06666
FIIG:
A003B0
Concept No.:
App. Key:
BM
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:
SX
CRITL:
F

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
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:
Q

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:
Equipment for Aircraft

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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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