5305-01-687-0257

Find complete technical information, availability, and procurement data for: 5305-01-687-0257
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-687-0257

Item Name Code

16282

Assigment Date

03/13/2020 (6 years ago)

A metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting one or more items and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See support,as modified. Do not use if a more specific name applies.

right-hand thread direction, 1.69 inches minimum and 1.75 inches maximum fastener length, 1.375 inches nominal thread length, 3a thread class, flat chamfer 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: 3a
Thread Direction: right-hand
Thread Length: 1.375 inches nominal
Fastener Length: 1.69 inches minimum and 1.75 inches maximum
Head Style: flat chamfer
Head Diameter: 0.642 inches minimum and 0.656 inches maximum
Head Height: 0.430 inches minimum and 0.437 inches maximum
Locking Feature: self-locking overall
Internal Drive Style: hexagon
End Item Identification: 5840016695071
Nominal Thread Diameter: 0.4375 inches
Width Across Flats: 0.375 inches nominal
Thread Quantity Per Inch: 20
Chamfer Angle: 30.0 degrees minimum and 45.0 degrees maximum
Part Name Assigned By Controlling Agency: screw, cap, socket head, undrilled and drilled, plain and self-locking, alloy steel, corrosion-resistant steel and heat- resistant steel, unrf-3a
Material: steel corrosion resisting overall
Material Document And Classification: ff-s-86 fed spec single material response overall
Thread Series Designator: unrf

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
NAS1351C7-28	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-687-0257?

The FSCG of the NSN 5305-01-687-0257 is 5305

Does the NSN 5305-01-687-0257 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-687-0257 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 5305-01-687-0257 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-687-0257 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 5305-01-687-0257 was assigned to the Federal Catalog?

It was assigned 6 years ago, on Fri, Mar 13, 2020