Model: NAS517-4-39

Machine Screw

Special Features:

160000 to 180000psi uts heat treatment

Properties:

Thread Class
3a
Thread Direction
Right-hand
Fastener Length
2.478 inches
Internal Drive Style
Cross recess type ii
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Countersink Angle
100.0 degrees
Part Name Assigned By Controlling Agency
Close tolerance flat head
Screw Surface Treatment
Cadmium
Thread Series Designator
Unjf
NSN
5305-01-510-7949
Part Number
NAS517-4-39
Description
Screw,machine
CAGE

Part NAS517-4-39 NSN 5305-01-510-7949

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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:
A
ESD:
A
MMAC:
CRITL:
X

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