20612U

View detailed technical data, stock status, and sourcing information for: 20612U
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-269-2801

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 nominal fastener length, 0.750 inches maximum thread length, hexagon head style, 2a thread class, 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: 2a
Thread Direction: right-hand
Thread Length: 0.750 inches maximum
Fastener Length: 0.750 inches nominal
Head Style: hexagon
Head Height: 0.226 inches minimum and 0.243 inches maximum
Width Between Flats: 0.551 inches minimum and 0.562 inches maximum
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 120000 pounds per square inch
Hardness Rating: 23.0 rockwell c minimum and 32.0 rockwell c maximum overall
Minimum Yield Strength: 85000 pounds per square inch
Material: steel overall
Material Document And Classification: sae gr 5 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-018-1635	No Name Available	04/01/1989
5305-00-030-0443	No Name Available	02/02/1974
5305-00-461-5601	No Name Available	01/25/1971
5305-00-843-4288	No Name Available	04/29/1967
5306-00-893-7565	No Name Available	09/25/1968
2520-00-933-6688	No Name Available	06/10/1967
5306-01-037-1135	No Name Available	03/01/1978

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
123520	Hexagon Head Cap Screw
13207E5500FN29	Hexagon Head Cap Screw
1AX 111	Hexagon Head Cap Screw
1AX111	Hexagon Head Cap Screw
20612U	Hexagon Head Cap Screw
20705064	Hexagon Head Cap Screw
251573	Hexagon Head Cap Screw
2C612	Hexagon Head Cap Screw
5305002692801	Hexagon Head Cap Screw
60-6-6	Hexagon Head Cap Screw
65A0545	Hexagon Head Cap Screw
947D	Hexagon Head Cap Screw
H5027	Hexagon Head Cap Screw
K-500-CH-2446	Hexagon Head Cap Screw
MS90726-58	Hexagon Head Cap Screw
P833	Hexagon Head Cap Screw
XAT505	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-269-2801?

The FSCG of the NSN 5305-00-269-2801 is 5305

Does the NSN 5305-00-269-2801 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-269-2801 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 5305-00-269-2801 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-269-2801 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 5305-00-269-2801 was assigned to the Federal Catalog?

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