91236A544

View detailed technical data, stock status, and sourcing information for: 91236A544
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-068-0509

Item Name Code

18257

Assigment Date

01/01/1963 (63 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

0.750 inches minimum and 0.938 inches maximum thread length, 1.250 inches nominal fastener length, right-hand thread direction, hexagon head style, 2a 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: 2a
Thread Direction: right-hand
Thread Length: 0.750 inches minimum and 0.938 inches maximum
Fastener Length: 1.250 inches nominal
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
End Item Identification: mrap rg-33 and rg-33 auv; multiple launch rocket system (mlrs); armored multi-purpose vehicle (ampv); a4 bradley fighting vehicle; a3 bradley fighting vehicle
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 33.0 rockwell c minimum and 39.0 rockwell c maximum overall
Minimum Yield Strength: 120000 pounds per square inch
Material: steel overall
Material Document And Classification: sae j429,grade8 assn std single material response or astm a354,grade bd assn std single material response overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single treatment response overall
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-010-0111	No Name Available	06/18/2014
5305-00-021-5269	Hexagon Head Cap Screw	07/01/2025
5305-00-022-7449	No Name Available	10/28/1998
5305-00-071-2241	No Name Available	08/01/2006
5305-00-206-6229	No Name Available	01/01/1998
5305-00-515-9352	No Name Available	09/01/1979
5305-00-576-1057	No Name Available	03/07/2017
5305-00-993-8675	No Name Available	10/16/1968
5305-01-194-8738	No Name Available	07/01/1991

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
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07-0994	Hexagon Head Cap Screw
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2DD115	Hexagon Head Cap Screw
41UT4103-4PC74	Hexagon Head Cap Screw
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5305000680509	Hexagon Head Cap Screw
5305000712241	Hexagon Head Cap Screw
5305PL0725561	Hexagon Head Cap Screw
6300757-10	Hexagon Head Cap Screw
800-1008	Hexagon Head Cap Screw
82-2063-0125	Hexagon Head Cap Screw
860-012	Hexagon Head Cap Screw
91236A544	Hexagon Head Cap Screw
9433298	Hexagon Head Cap Screw
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FAQs

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

What is the FSCG of the NSN 5305-00-068-0509?

The FSCG of the NSN 5305-00-068-0509 is 5305

Does the NSN 5305-00-068-0509 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-068-0509 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 5305-00-068-0509 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-068-0509 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 5305-00-068-0509 was assigned to the Federal Catalog?

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