5305-01-288-2109

Find complete technical information, availability, and procurement data for: 5305-01-288-2109
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-288-2109

Item Name Code

29294

Assigment Date

11/04/1988 (37 years ago)

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.

0.523 inches minimum and 0.553 inches maximum fastener length, 0.388 inches minimum and 0.438 inches maximum thread length, 3a thread class, right-hand thread direction, pan head style

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: 0.388 inches minimum and 0.438 inches maximum
Fastener Length: 0.523 inches minimum and 0.553 inches maximum
Head Style: pan
Head Diameter: 0.477 inches minimum and 0.492 inches maximum
Head Height: 0.140 inches minimum and 0.150 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style: torque-set ribbed
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.115 inches minimum and 0.135 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 180000 pounds per square inch
Material: steel comp 4140 or steel comp e4340 or steel comp 8740 overall
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 2 fed spec single treatment response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1578 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
NAS1578A4R2	Close Tolerance Screw
NAS1578A4R2P	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-288-2109?

The FSCG of the NSN 5305-01-288-2109 is 5305

Does the NSN 5305-01-288-2109 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-288-2109 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 5305-01-288-2109 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-288-2109 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 5305-01-288-2109 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Fri, Nov 4, 1988