11879C5-14D

View detailed technical data, stock status, and sourcing information for: 11879C5-14D
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-268-5977

Item Name Code

22846

Assigment Date

12/04/1987 (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.

3a thread class, 1.390 inches minimum and 1.437 inches maximum fastener length, flat countersunk undercut head style, right-hand thread direction, 0.531 inches nominal thread 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: 3a
Thread Direction: right-hand
Thread Length: 0.531 inches nominal
Fastener Length: 1.390 inches minimum and 1.437 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.575 inches minimum and 0.635 inches maximum
Head Height: 0.075 inches minimum and 0.077 inches maximum
Shoulder Diameter: 0.342 inches minimum and 0.343 inches maximum first shoulder
Shoulder Length: 0.798 inches minimum and 0.800 inches maximum first shoulder
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.313 inches
Thread Quantity Per Inch: 24
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Shoulder Shape: round first shoulder
Material: steel comp xm-13 overall
Material Document And Classification: ams5629 assn std single material response overall
Thread Series Designator: unjf

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
11879C5-14D	Shoulder Screw
3M902C5-14D	Shoulder Screw
HT4020-5-14Y	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-01-268-5977?

The FSCG of the NSN 5305-01-268-5977 is 5305

Does the NSN 5305-01-268-5977 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-268-5977 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 5305-01-268-5977 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-268-5977 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 5305-01-268-5977 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Dec 4, 1987