5305-01-657-8399

Find complete technical information, availability, and procurement data for: 5305-01-657-8399
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-657-8399

Item Name Code

18257

Assigment Date

08/31/2016 (9 years ago)

A manually or power operated valve having three or more ports. The direction of the flow through the various ports is controlled by either one or more reciprocating slide(s) or spool(s) with recess areas which mate with ports in an integral or replaceable ported sleeve, or one or more poppet(s). It is designed to change the direction of fluid flow from one valve port to another. An off (no flow) position is not a flow pattern. The valve is designed to actuate various components of a fluid system. A power operated valve may have a manual override. For items which stop, start, or change the flow of fluid, see: valve, solenoid. Excludes:valve, plug. See also servovalve, hydraulic; body section, working, linear directional control valve; and valve assembly.

hexagon head style, right-hand thread direction, 4.750 inches nominal fastener length, 2.000 inches nominal thread length, 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: 2.000 inches nominal
Fastener Length: 4.750 inches nominal
Head Style: hexagon
Head Height: 0.531 inches minimum and 0.604 inches maximum
Width Between Flats: 1.269 inches minimum and 1.312 inches maximum
End Item Identification: 3930-01-641-7505
Nominal Thread Diameter: 0.88 inches
Thread Quantity Per Inch: 9
Part Name Assigned By Controlling Agency: scr, cap, hex tab g8
Special Features: finish per fm100: d60, type 1 (magniblack 575)
Material: steel overall
Thread Series Designator: unc

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
4080863010	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-657-8399?

The FSCG of the NSN 5305-01-657-8399 is 5305

Does the NSN 5305-01-657-8399 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-657-8399 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 5305-01-657-8399 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-657-8399 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 5305-01-657-8399 was assigned to the Federal Catalog?

It was assigned 9 years ago, on Wed, Aug 31, 2016