Model: B-3243470

Internal Wrenching Bolt

Special Features:

May be plated all over

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.875 inches
Fastener Length
1.750 inches
Head Diameter
Between 0.863 inches and 0.875 inches
Head Height
Between 0.480 inches and 0.500 inches
First Diameter From Head
Between 0.381 inches and 0.391 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.875 inches
Internal Drive Style
Hexagon
Thread Diameter
0.500 inches
Width Across Flats
Between 0.500 inches and 0.503 inches
Thready Qty Per Inch (tpi)
13
Surface Finish
63.0 microinches head
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Material Specification
C50a-400, gr b1601289, fscm 24446 mfr ref single material response
Surface Treatment
Copper and cadmium
Surface Treatment
Copper and cadmium
Thread Series Designator
Unc
NSN
5306-00-411-0724
Part Number
B-3243470
Description
Bolt,internal Wrenching
CAGE
80064

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 B-3243470 NSN 5306-00-411-0724

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:
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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