H56-5

View detailed technical data, stock status, and sourcing information for: H56-5
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-059-9266

Item Name Code

05277

Assigment Date

01/01/1963 (63 years ago)

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.

prevailing torque all metal design locking feature, 3b thread class, 0.271 inches minimum and 0.360 inches maximum nut height, hexagon nut 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: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Nut Style: hexagon
Nut Height: 0.271 inches minimum and 0.360 inches maximum
Width Across Flats: 0.492 inches minimum and 0.502 inches maximum
Temp Rating: 800.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 24
Nominal Thread Size: 0.312 inches
Countersink Angle: 88.0 degrees nominal nut
Bearing Surface Type: chamfered or washer faced
Bearing Surface Finish: 125.0 microinches
Material: steel corrosion resisting overall
Precious Material And Location: overall silver
Precious Material: silver
Surface Treatment: silver overall
Surface Treatment Document And Classification: ams 2410 assn std single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-558-6527	No Name Available	09/24/1996
5310-00-783-5717	No Name Available	11/01/1978
5310-00-808-9092	No Name Available	12/01/1988

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
415749	Hexagon Self-Locking Nut
5310000599266	Hexagon Self-Locking Nut
5310PL0625596	Hexagon Self-Locking Nut
59FH-524	Hexagon Self-Locking Nut
H56-5	Hexagon Self-Locking Nut
MS21046C5	Hexagon Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-059-9266?

The FSCG of the NSN 5310-00-059-9266 is 5310

Does the NSN 5310-00-059-9266 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-059-9266 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 5310-00-059-9266 contain precious materials?

Item contains silver.

Does NSN 5310-00-059-9266 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 5310-00-059-9266 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963