5305-00-719-4987

Find complete technical information, availability, and procurement data for: 5305-00-719-4987
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-719-4987

Item Name Code

06657

Assigment Date

01/01/1960 (66 years ago)

2a thread class, flat countersunk head style, right-hand thread direction, 2.906 inches minimum and 3.000 inches maximum fastener length, 1.750 inches minimum 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: 2a
Thread Direction: right-hand
Thread Length: 1.750 inches minimum
Fastener Length: 2.906 inches minimum and 3.000 inches maximum
Head Style: flat countersunk
Head Diameter: 0.452 inches minimum and 0.507 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 80000 pounds per square inch
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Screw Material: steel corrosion resisting
Screw Material Document And Classification: 66 fed std single material response or aisi 302 assn std single material response or aisi 303 assn std single material response or aisi 304 assn std single material response or aisi 305 assn std single material response
Screw Surface Treatment: passivate
Screw Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Special Features: material to be equal to or interchangeable with 16-18 chrome nickel alloy
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 3 type and 2c style

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-995-0592	No Name Available	08/25/1971

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
MS51959-91	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-719-4987?

The FSCG of the NSN 5305-00-719-4987 is 5305

Does the NSN 5305-00-719-4987 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-719-4987 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 5305-00-719-4987 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-719-4987 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 5305-00-719-4987 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960