Model: 518881-3

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Left-hand
Thread Length
0.812 inches
Fastener Length
1.500 inches
Head Diameter
0.750 inches
Head Height
0.500 inches
Thread Diameter
0.500 inches
Width Across Flats
Between 0.375 inches and 0.380 inches
Thready Qty Per Inch (tpi)
13
Min. Tensile Strength (psi)
160000 pounds per square inch
Hardness Rating
36.0 rockwell c and 40.0 rockwell c
Chamfer Angle
30.0 degrees
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel
Surface Treatment
Nickel and cadmium
Surface Treatment Specification
Ams2424b assn standard 1st treatment response and qq-p-416, type 2 federal specification 2nd treatment response
Thread Series Designator
Unc
NSN
5306-01-086-3303
Part Number
518881-3
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 518881-3 NSN 5306-01-086-3303

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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