5305-01-137-7042

Find complete technical information, availability, and procurement data for: 5305-01-137-7042
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-137-7042

Item Name Code

16282

Assigment Date

09/01/1982 (43 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.

flat countersunk head style, 3a thread class, 0.767 inches minimum and 0.787 inches maximum fastener length, right-hand thread direction, 0.477 inches minimum and 0.637 inches maximum 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: 0.477 inches minimum and 0.637 inches maximum
Fastener Length: 0.767 inches minimum and 0.787 inches maximum
Head Style: flat countersunk
Head Diameter: 0.360 inches minimum and 0.404 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.1562 inches minimum and 0.1587 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches grip
Special Features: three slots 0.040 in. wide by 0.029 in. deep along the longitudinal axis and 120 degrees apart,thread to be double lead
Material: steel comp 8740 or steel comp 4140 overall
Material Document And Classification: mil-s-6049 mil spec 1st material response or mil-s-5626 mil spec 2nd material response overall
Surface Treatment: tin overall
Surface Treatment Document And Classification: mil-t-10727 ty1 mil spec single treatment response overall
Thread Series Designator: unf

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
BACF34L4BT2HS	Socket Head Cap Screw
CA21150-4-2HS	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-137-7042?

The FSCG of the NSN 5305-01-137-7042 is 5305

Does the NSN 5305-01-137-7042 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-137-7042 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 5305-01-137-7042 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-137-7042 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 5305-01-137-7042 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Wed, Sep 1, 1982