C1742-51

View detailed technical data, stock status, and sourcing information for: C1742-51
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-059-4322

Item Name Code

06673

Assigment Date

04/12/1978 (48 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, splined or smoothed, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

2a thread class, 2.500 inches nominal fastener length, 2.250 inches nominal thread length, knurled no. 1 head style, right-hand thread direction

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: 2.250 inches nominal
Fastener Length: 2.500 inches nominal
Head Style: knurled no. 1
Head Diameter: 1.125 inches nominal
Head Height: 0.375 inches nominal
Point Style: pointless
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 18
Material Document And Classification: aisi assn std single material response overall
Surface Treatment: oxide overall
Surface Treatment Document And Classification: mil-c-13924 assn std 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
C1742-51	Thumbscrew
CL-9-KHS	Thumbscrew

FAQs

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

What is the FSCG of the NSN 5305-01-059-4322?

The FSCG of the NSN 5305-01-059-4322 is 5305

Does NSN 5305-01-059-4322 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 5305-01-059-4322 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-059-4322 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 5305-01-059-4322 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Wed, Apr 12, 1978