5305-01-253-2991

Find complete technical information, availability, and procurement data for: 5305-01-253-2991
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-253-2991

Item Name Code

06657

Assigment Date

04/16/1987 (39 years ago)

An externally threaded device whose threaded portion is of nominal diameter, without a head but with the unthreaded end bent not over 225 degrees (3.925 radians). See also bolt, eye and bolt, u.

2a thread class, 1.126 inches minimum and 1.237 inches maximum thread length, flat countersunk head style, right-hand thread direction, 1.375 inches nominal fastener 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: 2a
Thread Direction: right-hand
Thread Length: 1.126 inches minimum and 1.237 inches maximum
Fastener Length: 1.375 inches nominal
Head Style: flat countersunk
Head Diameter: 0.556 inches minimum and 0.635 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 18
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Part Name Assigned By Controlling Agency: navy special project
Screw Material: steel comp 316
Screw Surface Treatment: passivate
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
2650516L22	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-253-2991?

The FSCG of the NSN 5305-01-253-2991 is 5305

Does the NSN 5305-01-253-2991 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-253-2991 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 5305-01-253-2991 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-253-2991 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 5305-01-253-2991 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Apr 16, 1987