Model: 343-105

Externally Relieved Body Screw

Special Features:

Make from ms51957-30

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.172 inches
Fastener Length
0.500 inches
Head Style
Pan no. 2
Head Diameter
Between 0.256 inches and 0.270 inches
Head Height
Between 0.087 inches and 0.097 inches
First Diameter From Head
Between 0.094 inches and 0.098 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.328 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
80 pounds per square inch
Externally Relieved Body Diameter Quantity
1
Material
Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
Material Specification
66 federal standard all material responses or aisi assn standard all material responses or sae assn standard all material responses
Surface Treatment
Passivate
Surface Treatment Specification
Mil-f-14072-e300 military specification single treatment response
Thread Series Designator
Unc
NSN
5305-01-165-9161
Part Number
343-105
Description
Screw,externally Relieved Body
CAGE
08748

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 undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Part 343-105 NSN 5305-01-165-9161

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01852
FIIG:
A003B0
Concept No.:
App. Key:
SE
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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