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1776081-1

View detailed technical data, stock status, and sourcing information for: 1776081-1

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1776081-1
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-821-4771
Item Name Code
06657
Assigment Date
01/01/1962 (64 years ago)

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

0.240 inches minimum and 0.260 inches maximum fastener length, 0.260 inches maximum thread length, flat countersunk head style, right-hand thread direction, 2a thread class

Product Characteristics

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

Thread Class
2a
Thread Direction
right-hand
Thread Length
0.260 inches maximum
Fastener Length
0.240 inches minimum and 0.260 inches maximum
Head Style
flat countersunk
Head Diameter
0.249 inches minimum and 0.279 inches maximum
Internal Drive Style
slot
Nominal Thread Diameter
0.138 inches
Thread Quantity Per Inch
32
Countersink Angle
80.0 degrees minimum and 82.0 degrees maximum
Screw Material
plastic polyamide (nylon)
Screw Material Document And Classification
mil-p-17901,ty 1 mil spec single material response
Thread Series Designator
unc

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
1776081-1 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-821-4771?
The FSCG of the NSN 5305-00-821-4771 is 5305
Does the NSN 5305-00-821-4771 have a Schedule B code assigned?
Yes, the Schedule B code is 3926909987
Does NSN 5305-00-821-4771 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 5305-00-821-4771 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-821-4771 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 5305-00-821-4771 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962

Professional Distribution

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