NK5-35A

View detailed technical data, stock status, and sourcing information for: NK5-35A
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-438-5109

Item Name Code

18257

Assigment Date

12/03/1969 (56 years ago)

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

3.703 inches minimum and 3.750 inches maximum fastener length, 0.499 inches minimum and 0.578 inches maximum thread length, 3a thread class, hexagon head style, right-hand thread direction

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: 0.499 inches minimum and 0.578 inches maximum
Fastener Length: 3.703 inches minimum and 3.750 inches maximum
Head Style: hexagon
Head Height: 0.172 inches minimum and 0.204 inches maximum
Width Between Flats: 0.490 inches minimum and 0.502 inches maximum
Nominal Thread Diameter: 0.312 inches
Features Provided: finished head
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp 4140 or steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4130 or steel comp 4037 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 3 fed spec single treatment response overall
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5306-00-477-8886	No Name Available	11/25/1970

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
NK5-35	Hexagon Head Cap Screw
NK5-35A	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-438-5109?

The FSCG of the NSN 5305-00-438-5109 is 5305

Does the NSN 5305-00-438-5109 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-438-5109 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 5305-00-438-5109 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-438-5109 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 5305-00-438-5109 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Wed, Dec 3, 1969