5305-01-494-8021

Find complete technical information, availability, and procurement data for: 5305-01-494-8021
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-494-8021

Item Name Code

29294

Assigment Date

02/25/2002 (24 years ago)

A flat metal or plastic item of various peripheral shapes having a solid (not laminated) cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole having a solid rectangular cross-section use disk, solid, plain. For round or hexagonal items with only one hole centrally located and with the length (thickness) exceeding 25 percent of the outside diameter or distance across peripheral flats, see spacer, sleeve. The thickness between the two parallel bearing surfaces must be 0.006 inch, (0.152 mm) or more for items less than 1/4 inch (6.35 mm) across the peripheral diameter, or smallest overall outside dimension, or must be 0.016 inch (0.406 mm) or more for items 1/4 inch (6.35 mm) or greater across the peripheral diameter or smallest overall outside dimension. For items with a thickness less than those indicated above, see shim. For items with one hole centrally located conforming to the above dimensional criteria use washer, flat or spacer, ring as applicable. When thickness and/or outside_diameter_or_smallest_overall_outside_dimension_is_designated_as_a_tolerance/dimension_the_maximum_dimension_will_be_used_to_determine_compliance._excludes:gasket;_insulator_(as_modified)_and_mounting_pad,_electrical-electronic_component.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1.577 inches minimum and 1.624 inches maximum fastener length, right-hand thread direction, 3a thread class, flat countersunk undercut head style, 0.531 inches nominal thread length

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: 0.531 inches nominal
Fastener Length: 1.577 inches minimum and 1.624 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.6287 inches minimum and 0.6335 inches maximum
Head Height: 0.0878 inches minimum and 0.0898 inches maximum
Grip Diameter: 0.3115 inches minimum and 0.3120 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.3125 inches
Grip Length: 1.052 inches minimum and 1.072 inches maximum
Thread Quantity Per Inch: 24
Countersink Angle: 100.0 degrees nominal
Part Name Assigned By Controlling Agency: navy special project
Special Features: item intended for use in fuel sealing applications
Material: steel corrosion resisting 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
11925C5-17D	Close Tolerance Screw
HT4020-5-17	Close Tolerance Screw
ST3M652C5-17D	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-494-8021?

The FSCG of the NSN 5305-01-494-8021 is 5305

Does the NSN 5305-01-494-8021 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-494-8021 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 5305-01-494-8021 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-494-8021 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 5305-01-494-8021 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Mon, Feb 25, 2002