5305-01-277-4981

Find complete technical information, availability, and procurement data for: 5305-01-277-4981
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-277-4981

Item Name Code

16282

Assigment Date

04/22/1988 (38 years ago)

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

2a thread class, right-hand thread direction, 0.472 inches minimum and 0.597 inches maximum thread length, 0.750 inches nominal fastener length, flat countersunk head style

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: 0.472 inches minimum and 0.597 inches maximum
Fastener Length: 0.750 inches nominal
Head Style: flat countersunk
Head Diameter: 0.452 inches minimum and 0.507 inches maximum
Locking Feature: strip or pellet or patch threads
Internal Drive Style: slot
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 80000 pounds per square inch
Countersink Angle: 82.0 degrees nominal
Part Name Assigned By Controlling Agency: screw, machine self-locking flathead
Material: nickel alloy r-405 fastener
Material Document And Classification: qq-n-281 cl a assn std single material response fastener
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
60-23-0087	Socket Head Cap Screw
6808886-2	Socket Head Cap Screw
708-4674144 ITEM 6	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-277-4981?

The FSCG of the NSN 5305-01-277-4981 is 5305

Does the NSN 5305-01-277-4981 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-277-4981 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 5305-01-277-4981 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-277-4981 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 5305-01-277-4981 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Apr 22, 1988