NAS1640-4
Lock Washer
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Description:
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NAS1640-4 Lock Washer

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NAS1640-4 Datasheet Features and Specification
Hole Diameter:
0.115 inches minimum and 0.124 inches maximum
Outside Diameter:
0.212 inches maximum
Material Thickness:
0.025 inches minimum and 0.031 inches maximum
Hardness Rating:
35.0 rockwell c minimum and 45.0 rockwell c maximum
Material:
Steel corrosion resisting overall
Material Specification:
Fed std 66,crew 300 series mil std single material response overall
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response overall
Style Designator:
Split helical-right hand
Nondefinitive Specification/std Data:
C class
Additional Information
SKU / Model: | NAS16404 |
NSN: | 5310-00-442-6913 |
FSC: | Nuts and Washers / 5310 |
Product Series: | NAS1640 |
Pack Weight (Approx.) | 0.000 lb |
Minimum Qty (MOQ): | 100 |
ECCN: | EAR99 |
National Motor Freight: | 194160, Washer Or Gaskets, Iron Or Steel, |
Download PDF Version NAS1640-4_Military-Fasteners-com.pdf |
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More NAS1640 lock washers
NAS1640-416
5310-00-087-3055 Lock Washer
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Customer Reviews

Jimmy G.
nice custom service
5.0
Foster P.
I order parts about once a week for the restoration of my Grumman AA-1A. Service and prompt delivery are always above expectation. I don't know what I would do without Military Fasteners and that's no joke! Thanks for your great work!
5.0
Aitana C.
AS Always fast and great service by all.
5.0
Sutton D.
Very easy to order parts on your website!
5.0
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