Model: 12NC4248-1-40

Spline Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Pilot Diameter

Between 0.222 inches and 0.227 inches

Pilot Length

Between 0.037 inches and 0.043 inches

Counterbore Diameter

0.175 inches first end and 0.185 inches first end

Nut Style

Spline (floating)

Nut Length

0.446 inches

Nut Height

0.175 inches

Nut Counterbore Depth

0.062 inches first end

Width Across Flats

0.300 inches

Thread Series

Unc

Features Provided

Floating nut

Thready Qty Per Inch (tpi)

Thread Size

0.112 inches

Part Name Assigned By Controlling Agency

Nut, self-locking, spline

Material

Plastic polyamide locking insert

Material

Steel except insert

Surface Treatment

Cadmium except insert

NSN

5310-01-206-5183

Part Number

12NC4248-1-40

Description

Nut,self-locking,spline

CAGE

72962

A nut having an externally splined sleeve, which holds it in position when forced into a hole of slightly smaller diameter. An integral feature is incorporated for locking.

Part 12NC4248-1-40 NSN 5310-01-206-5183

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15893

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel