Model: NAS720-10-6

Assembled Washer Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Fastener Length
Between 0.343 inches and 0.375 inches
Head Style
Pan
Head Diameter
Between 0.357 inches and 0.373 inches
Head Height
Between 0.099 inches and 0.110 inches
Washer Quantity
2
Internal Drive Style
Slot
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
55000 pounds per square inch
Hardness Rating
38.0 rockwell c primary washer and 46.0 rockwell c primary washer
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.337 inches
Secondary Washer Outside Diameter
Between 0.029 inches and 0.035 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
0.140 inches
Secondary Washer Material Thickness
Between 0.338 inches and 0.348 inches
Material
Steel comp 1010 fastener
Material
Steel comp 1017 secondary washer
Material
Steel comp 1060 primary washer
Material Specification
Astm a29 assn standard single material response primary washer
Material Specification
Qq-s-634 federal specification single material response fastener or qq-s-637 assn standard single material response fastener
Material Specification
Qq-s-636 federal specification single material response secondary washer
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification all treatment responses
Thread Series Designator
Unf
Specification Data
80205-nas720 professional/industrial association standard
NSN
5305-01-418-3107
Part Number
NAS720-10-6
Description
Screw,assembled Washer
CAGE
80205

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

Part NAS720-10-6 NSN 5305-01-418-3107

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:
BA
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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