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42801A Shouldered and Recessed Washer

5310-01-055-2028

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Official Item Classification

Name
Shouldered and Recessed Washer
Part Number
42801A
(NSN) National Stock Number
5310-01-055-2028
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
15935
(FIIG) Federal Item Identification Guide
A022B0
Date
02/03/1978 (48 years ago)

0.990 inches minimum and 0.991 inches maximum outside diameter, 0.825 inches minimum and 0.833 inches maximum recess diameter, 0.964 inches minimum and 0.966 inches maximum shoulder diameter, 0.665 inches minimum and 0.668 inches maximum hole diameter, 0.060 inches minimum and 0.064 inches maximum shoulder height

Specs & Compatibility

Hole Diameter

0.665 inches minimum and 0.668 inches maximum

Shoulder Diameter

0.964 inches minimum and 0.966 inches maximum

Outside Diameter

0.990 inches minimum and 0.991 inches maximum

Recess Diameter

0.825 inches minimum and 0.833 inches maximum

Shoulder Height

0.060 inches minimum and 0.064 inches maximum

Recess Depth

0.443 inches minimum and 0.453 inches maximum

Material Thickness

0.449 inches minimum and 0.459 inches maximum

Material

aluminum alloy 2024 overall

Material Document And Classification

qq-a-200/3 fed spec 1st material response and qq-a-225/6,t351 fed spec 2nd material response overall

Surface Treatment

anodize overall

Surface Treatment Document And Classification

mil-a-8625,ty 2 mil spec single treatment response overall

Style Designator

shouldered and recessed

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0015935

Related Hardware Products

Part Number Description
42801A Shouldered and Recessed Washer

Frequently Asked Questions

What is the FSCG of the NSN 5310-01-055-2028?
The FSCG of the NSN 5310-01-055-2028 is 5310
Does the NSN 5310-01-055-2028 have a Schedule B code assigned?
Yes, the Schedule B code is 7616108000
Does NSN 5310-01-055-2028 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-01-055-2028 contain precious materials?
Precious metal content is unknown
Does NSN 5310-01-055-2028 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-01-055-2028 was assigned to the Federal Catalog?
It was assigned 48 years ago, on Fri, Feb 3, 1978