CAFB9593B

View detailed technical data, stock status, and sourcing information for: CAFB9593B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-306-3508

Item Name Code

18257

Assigment Date

08/23/1989 (36 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, 1.375 inches nominal thread length, hexagon head style, 2a thread class, 1.625 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: 1.375 inches nominal
Fastener Length: 1.625 inches nominal
Head Style: hexagon
Head Height: 0.328 inches nominal
Width Between Flats: 0.750 inches nominal
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Hardness Rating: 26.0 rockwell c minimum and 33.0 rockwell c maximum overall
Material: steel comp 4140 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
16101323	Hexagon Head Cap Screw
CAFB9593B	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-306-3508?

The FSCG of the NSN 5305-01-306-3508 is 5305

Does the NSN 5305-01-306-3508 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-306-3508 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 5305-01-306-3508 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-306-3508 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 5305-01-306-3508 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Wed, Aug 23, 1989