NAS1959-26D

View detailed technical data, stock status, and sourcing information for: NAS1959-26D
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-341-6715

Item Name Code

15903

Assigment Date

07/05/1991 (35 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

2.450 inches minimum and 2.480 inches maximum fastener length, 3a thread class, right-hand thread direction, 0.840 inches nominal thread length, hexagon 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: 0.840 inches nominal
Fastener Length: 2.450 inches minimum and 2.480 inches maximum
Head Style: hexagon
Head Height: 0.281 inches minimum and 0.296 inches maximum
Width Between Flats: 0.865 inches minimum and 0.877 inches maximum
Grip Diameter: 0.5605 inches minimum and 0.5615 inches maximum
Shank Unthreaded Hole Diameter: 0.141 inches minimum and 0.151 inches maximum first hole
Nominal Thread Diameter: 0.562 inches
Grip Length: 1.615 inches minimum and 1.635 inches maximum
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 180000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center: 2.247 inches nominal first hole
Surface Finish: 32.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
Material: steel comp 4140 or steel comp e4340 or steel comp 8740 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty2 cl2 fed spec single treatment response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1959 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
NAS1959-26D	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-341-6715?

The FSCG of the NSN 5306-01-341-6715 is 5306

Does the NSN 5306-01-341-6715 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-341-6715 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 5306-01-341-6715 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-341-6715 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 5306-01-341-6715 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Fri, Jul 5, 1991