5305-01-256-6798

Find complete technical information, availability, and procurement data for: 5305-01-256-6798
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 5305-01-256-6798 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-256-6798

Item Name Code

06657

Assigment Date

06/08/1987 (39 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.

0.318 inches minimum and 0.380 inches maximum thread length, flat chamfer head style, 0.380 inches nominal fastener length, right-hand thread direction, 2a thread class

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: 0.318 inches minimum and 0.380 inches maximum
Fastener Length: 0.380 inches nominal
Head Style: flat chamfer
Head Diameter: 0.250 inches nominal
Head Height: 0.590 inches nominal
Nominal Thread Diameter: 0.164 inches
Hole Quantity: 1
Thread Quantity Per Inch: 32
Part Name Assigned By Controlling Agency: navy special project
Screw Material: steel comp 304
Screw Material Document And Classification: qq-s-763 fed spec single material response
Screw Surface Treatment: passivate
Screw Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Head Hole Configuration Style: round
Special Features: 45.0 degree angle cut on top side of head
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
314619-001	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-256-6798?

The FSCG of the NSN 5305-01-256-6798 is 5305

Does the NSN 5305-01-256-6798 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-256-6798 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 5305-01-256-6798 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-256-6798 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 5305-01-256-6798 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Mon, Jun 8, 1987