50253-1018-5.30

View detailed technical data, stock status, and sourcing information for: 50253-1018-5.30
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-265-4799

Item Name Code

22846

Assigment Date

10/14/1987 (38 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes:bolt, internal wrenching and screw, cap, socket head.

right-hand thread direction, flat extended washer head style, 1.000 inches minimum thread length, 0.646 inches minimum and 0.655 inches maximum fastener length, 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: 1.000 inches minimum
Fastener Length: 0.646 inches minimum and 0.655 inches maximum
Head Style: flat extended washer
Head Diameter: 0.160 inches minimum and 0.170 inches maximum
Head Height: 0.185 inches nominal
Extended Washer Diameter: 0.186 inches minimum and 0.188 inches maximum
Extended Washer Thickness: 0.060 inches nominal
Shoulder Diameter: 0.135 inches minimum and 0.145 inches maximum first shoulder
Shoulder Length: 0.125 inches nominal first shoulder
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.112 inches
Width Across Flats: 0.937 inches minimum and 0.952 inches maximum
Thread Quantity Per Inch: 40
Shoulder Shape: round first shoulder
Color: red head
Material: steel comp 303 or steel comp 410 overall
Material Document And Classification: astm a582 assn std 1st material response or qq-s-763 fed spec 2nd material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
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
50253-1018-5.30	Shoulder Screw
633321-04	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-01-265-4799?

The FSCG of the NSN 5305-01-265-4799 is 5305

Does the NSN 5305-01-265-4799 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-265-4799 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 5305-01-265-4799 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-265-4799 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 5305-01-265-4799 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Wed, Oct 14, 1987