Model: 518881-7

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
2.000 inches
Fastener Length
6.500 inches
Head Style
Knurled no. 1
Head Diameter
1.000 inches
Head Height
0.500 inches
Internal Drive Style
Square
Thread Diameter
0.625 inches
Width Across Flats
Between 0.500 inches and 0.505 inches
Thready Qty Per Inch (tpi)
11
Hardness Rating
36.0 rockwell c and 40.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Material Specification
Mil-s-5000 military specification 1st material response and mil-s-6049 military specification 2nd material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2 federal specification single treatment response
Thread Series Designator
Unjc
NSN
5306-01-262-2199
Part Number
518881-7
Description
Bolt,internal Wrenching
CAGE
80020

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 518881-7 NSN 5306-01-262-2199

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:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
574
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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