PO0166NRP

View detailed technical data, stock status, and sourcing information for: PO0166NRP
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-274-3251

Item Name Code

04893

Assigment Date

03/07/1988 (38 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.

2a thread class, 0.310 inches nominal width between flats, internal wrenching nut style, right-hand thread direction, double hexagon internal drive style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Width Between Flats: 0.310 inches nominal
Internal Drive Style: double hexagon
Nut Style: internal wrenching
Nut Diameter: 0.521 inches minimum and 0.526 inches maximum
Nut Height: 0.512 inches minimum and 0.522 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 24
Nominal Thread Size: 0.312 inches
Countersink Angle: 90.0 degrees nominal nut
Criticality Code Justification: zzzy
Special Features: item must comply with requirements of defense supply center philadelphia production standard no. po0166nrp
Material: steel comp 303 overall
Special Test Features: special quality control testing
Test Data Document: "81349-mil-p-23199 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Reference Number Differentiating Characteristics: reference number differentiating material will be in accordance with naval inventory control point activity hx quality control. manufacturing and testing specifications available at the dla icp

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
129141-1	Internal Wrenching Plain Nut
ALLENUT 5/16-24UNF-2A	Internal Wrenching Plain Nut
B-129141-1	Internal Wrenching Plain Nut
LL-HX5-5067	Internal Wrenching Plain Nut
PO0166NRP	Internal Wrenching Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-274-3251?

The FSCG of the NSN 5310-01-274-3251 is 5310

Does the NSN 5310-01-274-3251 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-274-3251 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 5310-01-274-3251 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-274-3251 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 5310-01-274-3251 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Mon, Mar 7, 1988