1&4&20X5&8SCP

View detailed technical data, stock status, and sourcing information for: 1&4&20X5&8SCP
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-068-7837

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.

2a thread class, 0.469 inches minimum and 0.625 inches maximum thread length, 0.594 inches minimum and 0.625 inches maximum fastener length, right-hand thread direction, 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: 2a
Thread Direction: right-hand
Thread Length: 0.469 inches minimum and 0.625 inches maximum
Fastener Length: 0.594 inches minimum and 0.625 inches maximum
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.437 inches maximum
End Item Identification: mrap-rg-33 armored utility vehicle (auv); mrap - m-atv with cs13 pop and sne; armored multi-purpose vehicle (ampv); multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle; logistics support vessel
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
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: saej429 grade 8 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
5305-01-195-1458	No Name Available	11/01/1991
5305-01-396-2255	No Name Available	09/01/1996
5305-01-649-1385	No Name Available	08/01/2017

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
003-2-1331	Hexagon Head Cap Screw
0137485	Hexagon Head Cap Screw
01847-015	Hexagon Head Cap Screw
1&4&20X5&8SCP	Hexagon Head Cap Screw
10082364	Hexagon Head Cap Screw
12759-00078	Hexagon Head Cap Screw
18257-002	Hexagon Head Cap Screw
2A0762	Hexagon Head Cap Screw
2A762	Hexagon Head Cap Screw
303865	Hexagon Head Cap Screw
5305000687837	Hexagon Head Cap Screw
5305PL0655731	Hexagon Head Cap Screw
5305PL2139914	Hexagon Head Cap Screw
816237	Hexagon Head Cap Screw
904474	Hexagon Head Cap Screw
A-10505	Hexagon Head Cap Screw
AEB02C250625WA6AA1	Hexagon Head Cap Screw
AES01C250625AW9A91	Hexagon Head Cap Screw
B1821BH025C063N	Hexagon Head Cap Screw
BE3-47	Hexagon Head Cap Screw
G1921BH025C063N	Hexagon Head Cap Screw
MS90728-5	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-068-7837?

The FSCG of the NSN 5305-00-068-7837 is 5305

Does the NSN 5305-00-068-7837 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-068-7837 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 5305-00-068-7837 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-068-7837 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 5305-00-068-7837 was assigned to the Federal Catalog?

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