Model: 55978-3-7P

Shoulder Screw

Properties:

Thread Class
3a
Thread Length
Between 0.380 inches and 0.447 inches
Fastener Length
Between 0.828 inches and 0.875 inches
Head Style
Flat countersunk
Head Diameter
Between 0.376 inches and 0.381 inches
Shoulder Length
0.353 inches first shoulder and 0.375 inches first shoulder
Internal Drive Style
High-torque
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Countersink Angle
100.0 degrees
Shoulder Shape
Round first shoulder
Thread Series Designator
Unf
NSN
5305-00-165-1899
Part Number
55978-3-7P
Description
Screw,shoulder
CAGE
56878

Part 55978-3-7P NSN 5305-00-165-1899

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
Concept No.:
App. Key:
SL
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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