Model: 421012

Assembled Washer Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.710 inches
Fastener Length
0.750 inches
Head Style
Round
Head Diameter
Between 0.670 inches and 0.708 inches
Head Height
Between 0.237 inches and 0.256 inches
Washer Quantity
1
Internal Drive Style
Cross recess type 1
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
16
Primary Washer Outside Diameter
Between 0.680 inches and 0.695 inches
Primary Washer Style
Flat external teeth
Primary Washer Material Thickness
Between 0.032 inches and 0.040 inches
Material
Steel comp 1010 fastener or steel comp 1011 fastener or steel comp 1013 fastener or steel comp 1015 fastener or steel comp 1016 fastener or steel comp 1017 fastener or steel comp 1018 fastener or steel comp 1019 fastener or steel comp 1020 fastener
Surface Treatment
Cadmium or zinc
Thread Series Designator
Unc
NSN
5305-00-754-4378
Part Number
421012
Description
Screw,assembled Washer
CAGE
19207

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

Part 421012 NSN 5305-00-754-4378

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:
A
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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