5305-01-256-3049

Find complete technical information, availability, and procurement data for: 5305-01-256-3049
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-256-3049

Item Name Code

29294

Assigment Date

06/03/1987 (39 years ago)

flat countersunk head style, right-hand thread direction, 0.681 inches minimum and 0.701 inches maximum fastener length, 0.306 inches minimum and 0.326 inches maximum thread length, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.306 inches minimum and 0.326 inches maximum
Fastener Length: 0.681 inches minimum and 0.701 inches maximum
Head Style: flat countersunk
Head Diameter: 0.499 inches minimum and 0.507 inches maximum
Grip Diameter: 0.2640 inches minimum and 0.2650 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.365 inches minimum and 0.385 inches maximum
Thread Quantity Per Inch: 28
Countersink Angle: 100.0 degrees nominal
Special Features: 0.0156 in. oversize shank for repair work only
Material: steel comp 4340 or steel comp 4140 or steel comp 8740 overall
Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-5626 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator: unjc

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
51B334-6X	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-256-3049?

The FSCG of the NSN 5305-01-256-3049 is 5305

Does the NSN 5305-01-256-3049 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-256-3049 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 5305-01-256-3049 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-256-3049 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 5305-01-256-3049 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Wed, Jun 3, 1987