5305-01-031-8418

Find complete technical information, availability, and procurement data for: 5305-01-031-8418
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-031-8418

Item Name Code

16282

Assigment Date

12/02/1976 (49 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 chamfer head style, 3a thread class, right-hand thread direction, 1.125 inches nominal fastener length, 0.750 inches minimum 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: 0.750 inches minimum
Fastener Length: 1.125 inches nominal
Head Style: flat chamfer
Head Diameter: 0.457 inches minimum and 0.469 inches maximum
Head Height: 0.306 inches minimum and 0.312 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.250 inches nominal
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 165000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 42.0 rockwell c maximum overall
Minimum Yield Strength: 155000 pounds per square inch
Criticality Code Justification: zzzw
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Thread Series Designator: unf
Departure From Cited Document: as differentiated by special quality control testing for mk 48 torpedo

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
2505689-6	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-031-8418?

The FSCG of the NSN 5305-01-031-8418 is 5305

Does the NSN 5305-01-031-8418 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-031-8418 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 5305-01-031-8418 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-031-8418 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 5305-01-031-8418 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Thu, Dec 2, 1976