5305-01-539-3977

Find complete technical information, availability, and procurement data for: 5305-01-539-3977
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-539-3977

Item Name Code

29294

Assigment Date

04/20/2006 (20 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

right-hand thread direction, 0.469 inches nominal thread length, fillister countersunk head style, 1.219 inches nominal fastener length, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.469 inches nominal
Fastener Length: 1.219 inches nominal
Head Style: fillister countersunk
Head Diameter: 0.389 inches minimum and 0.394 inches maximum
Head Height: 0.070 inches minimum and 0.074 inches maximum
Grip Diameter: 0.248 inches minimum and 0.249 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.750 inches nominal
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 125000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Part Name Assigned By Controlling Agency: screw-close tolerance 100 deg countersunk reduced head, hi-torque, non magnetic cres, ivd aluminum coated
Special Features: lubricant- cetyl alcohol
Material: nickel alloy 718 overall
Material Document And Classification: ams 5662 national std/spec single material response overall
Surface Treatment: aluminum overall
Surface Treatment Document And Classification: mil-dtl-83488 ty 2 cls 3 national std/spec single treatment response overall
Thread Series Designator: unjf

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
3M927-4L12	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-539-3977?

The FSCG of the NSN 5305-01-539-3977 is 5305

Does the NSN 5305-01-539-3977 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-539-3977 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 5305-01-539-3977 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-539-3977 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 5305-01-539-3977 was assigned to the Federal Catalog?

It was assigned 20 years ago, on Thu, Apr 20, 2006