5305-00-256-4120

Find complete technical information, availability, and procurement data for: 5305-00-256-4120
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-256-4120

Item Name Code

06657

Assigment Date

03/24/1971 (55 years ago)

0.220 inches minimum and 0.250 inches maximum fastener length, right-hand thread direction, 2a thread class, pan head style, 0.158 inches minimum and 0.250 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: 2a
Thread Direction: right-hand
Thread Length: 0.158 inches minimum and 0.250 inches maximum
Fastener Length: 0.220 inches minimum and 0.250 inches maximum
Head Style: pan
Head Diameter: 0.256 inches minimum and 0.270 inches maximum
Head Height: 0.087 inches minimum and 0.097 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 80000 pounds per square inch
Screw Material: steel corrosion resisting or steel
Screw Material Document And Classification: qq-s-763,300 series fed spec 1st material response or 66,300 series fed std 1st material response or comp 16-18 or 18-8 assn std 2nd material response
Head Surface Treatment: paint
Shank Surface Treatment: passivate
Shank Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Special Features: paint fed std 595 color no. 36231
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
222400-005	Machine Screw
SFS6C4CPL13GY	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-256-4120?

The FSCG of the NSN 5305-00-256-4120 is 5305

Does the NSN 5305-00-256-4120 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-256-4120 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 5305-00-256-4120 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-256-4120 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 5305-00-256-4120 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Wed, Mar 24, 1971