Model: 178755

Assembled Washer Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.625 inches
Fastener Length
0.625 inches
Head Style
Round
Head Diameter
Between 0.443 inches and 0.472 inches
Head Height
Between 0.160 inches and 0.175 inches
Washer Quantity
1
Internal Drive Style
Torque
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Primary Washer Outside Diameter
Between 0.462 inches and 0.474 inches
Primary Washer Style
Flat external teeth
Primary Washer Material Thickness
0.025 inches
Material
Steel comp 1010 or steel comp 1011 or steel comp 1015 or steel comp 1016 or steel comp 1018 or steel comp 1019 or steel comp 1020
Material Specification
Qq-s-633 federal specification all material responses
Surface Treatment
Cadmium or zinc
Thread Series Designator
Unc
NSN
5305-00-017-8755
Part Number
178755
Description
Screw,assembled Washer
CAGE
7X677

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

Part 178755 NSN 5305-00-017-8755

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06660
FIIG:
A003B0
Concept No.:
App. Key:
SA
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:
50.0
WCC:
713
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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