NK4H6

View detailed technical data, stock status, and sourcing information for: NK4H6
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-616-1993

Item Name Code

01847

Assigment Date

01/01/1963 (63 years ago)

3a thread class, right-hand thread direction, 0.437 inches minimum and 0.515 inches maximum thread length, hexagon head style, 0.765 inches minimum and 0.812 inches maximum fastener 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: 3a
Thread Direction: right-hand
Thread Length: 0.437 inches minimum and 0.515 inches maximum
Fastener Length: 0.765 inches minimum and 0.812 inches maximum
Head Style: hexagon
Head Height: 0.140 inches minimum and 0.172 inches maximum
Width Between Flats: 0.428 inches minimum and 0.440 inches maximum
Locking Feature: pellet threads
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.296 inches minimum and 0.328 inches maximum
Features Provided: finished head
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum overall
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
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-6050 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6758 mil spec 5th material response or ams 6300 assn std 6th material response overall
Surface Treatment: cadmium 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Below is a list of NSNs that have been officially superseded by this NSN: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
5306-00-050-9348	No Name Available	03/01/1971

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
NK4-6	Machine Bolt
NK4H6	Machine Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-616-1993?

The FSCG of the NSN 5306-00-616-1993 is 5306

Does the NSN 5306-00-616-1993 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-616-1993 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 5306-00-616-1993 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-00-616-1993 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 5306-00-616-1993 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963