595-6401090 ITEM 55

View detailed technical data, stock status, and sourcing information for: 595-6401090 ITEM 55
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-397-3466

Item Name Code

16282

Assigment Date

10/07/1994 (31 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

right-hand thread direction, flat countersunk head style, 0.625 inches nominal fastener length, 3a thread class, 0.625 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: 0.625 inches nominal
Fastener Length: 0.625 inches nominal
Head Style: flat countersunk
Head Diameter: 0.311 inches minimum and 0.359 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.164 inches
Width Across Flats: 0.094 inches nominal
Thread Quantity Per Inch: 32
Countersink Angle: 82.0 degrees nominal
Material: nickel alloy k-500 overall
Material Document And Classification: qq-n-286, class a fed spec single material response overall
Thread Series Designator: unrc

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
211058630	Socket Head Cap Screw
595-6401090 ITEM 55	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-397-3466?

The FSCG of the NSN 5305-01-397-3466 is 5305

Does the NSN 5305-01-397-3466 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-397-3466 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 5305-01-397-3466 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-397-3466 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 5305-01-397-3466 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Fri, Oct 7, 1994