NAS1801-6D20

View detailed technical data, stock status, and sourcing information for: NAS1801-6D20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-727-2181

Item Name Code

16282

Assigment Date

02/21/2025 (1 year ago)

A circular, single or multipiece, rigid, metallic or nonmetallic item having a centrally located hole with a sharp edge on the inside periphery. It is supplied in various cross-sectional shapes and is designed to be installed in a cylinder, shock strut, or similar device to remove excess oil, dirt, ice, and/or foreign material from a piston, ram, or sliding rod. Excludes:packing, preformed; ring, piston; and seal ring, metal.

right-hand thread direction, 1.109 inches minimum and 1.157 inches maximum fastener length, 3a thread class, hexagon head style, 1.109 inches minimum and 1.157 inches maximum thread length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 1.109 inches minimum and 1.157 inches maximum
Fastener Length: 1.109 inches minimum and 1.157 inches maximum
Head Style: hexagon
Head Height: 0.188 inches minimum and 0.203 inches maximum
Width Between Flats: 0.492 inches minimum and 0.502 inches maximum
Hole Diameter: 0.070 inches minimum and 0.080 inches maximum
Internal Drive Style: cruciform ribbed
Nominal Thread Diameter: 0.3750 inches
Hole Quantity: 3
Hole Type: drilled
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 160000 pounds per square inch
Hole Configuration Style: hexagon flats
Part Name Assigned By Controlling Agency: screw,hex head,cruciform recess,full thread,alloy steel,160 ksi ftu
Material: steel comp 4140 or steel comp 4340 or steel comp 8740 overall
Material Document And Classification: ams6382 aerospace material spec std 1st material response or ams6415 aerospace material spec std 2nd material response or ams6322,6325 or 6327 aerospace material spec std 3rd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams-qq-p-416,type ii,class 2 national std/spec single treatment response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1801 professional/industrial association standard

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
NAS1801-6D20	Socket Head Cap Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-727-2181?

The FSCG of the NSN 5305-01-727-2181 is 5305

Does the NSN 5305-01-727-2181 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-727-2181 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 5305-01-727-2181 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-727-2181 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 5305-01-727-2181 was assigned to the Federal Catalog?

It was assigned 1 year ago, on Fri, Feb 21, 2025