Model: 51B581-3-8

Close Tolerance Screw

Properties:

Thread Class
3a
Thread Length
0.260 inches
Fastener Length
Between 0.760 inches and 0.807 inches
Head Style
Flat countersunk
Head Diameter
Between 0.296 inches and 0.301 inches
Grip Diameter
Between 0.1885 inches and 0.1895 inches
Grip Length
Between 0.490 inches and 0.510 inches
Countersink Angle
100.0 degrees
NSN
5305-01-049-1739
Part Number
51B581-3-8
Description
Screw,close Tolerance
CAGE

Part 51B581-3-8 NSN 5305-01-049-1739

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
Concept No.:
App. Key:
SS
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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