NAS1191-4P-10L

View detailed technical data, stock status, and sourcing information for: NAS1191-4P-10L
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-250-2190

Item Name Code

16282

Assigment Date

02/26/1987 (39 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

0.594 inches minimum and 0.625 inches maximum fastener length, flat chamfer head style, 0.523 inches minimum and 0.625 inches maximum thread length, right-hand thread direction, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.523 inches minimum and 0.625 inches maximum
Fastener Length: 0.594 inches minimum and 0.625 inches maximum
Head Style: flat chamfer
Head Diameter: 0.367 inches minimum and 0.375 inches maximum
Head Height: 0.133 inches minimum and 0.150 inches maximum
Locking Feature: strip threads
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: steel comp e4340 or steel comp 4140 or steel comp 8735 or steel comp 8740 or steel comp 6150 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl 2 fed spec single treatment response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1191 professional/industrial association standard

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
NAS1191-4P-10L	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-250-2190?

The FSCG of the NSN 5305-01-250-2190 is 5305

Does the NSN 5305-01-250-2190 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-250-2190 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 5305-01-250-2190 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-250-2190 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 5305-01-250-2190 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Feb 26, 1987