Model: MS21059-4K

Plate Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Counterbore Diameter

0.310 inches nut and 0.330 inches nut

Lubrication

Soluble lubricant

Mounting Hole Diameter

Between 0.098 inches and 0.103 inches

Nut Style

Plate

Nut Length

1.292 inches

Nut Height

0.281 inches

Plate Thickness

0.032 inches

Plate Width

Between 0.350 inches and 0.516 inches

Nut Counterbore Depth

0.032 inches nut

Nut Mounting Provision

Countersunk holes

Mounting Provision Location

Opposite nut projection side

Mounting Hole Arrangement Style

2 holes

Distance From Aperture Center To Mounting Hole Center

Between 0.495 inches and 0.505 inches

Center To Center Distance Between Mounting Holes Along Length

Between 0.998 inches and 1.002 inches

Tempurature Rating

450.0 degrees fahrenheit

Thread Series

Unjf

Features Provided

Floating nut

Thready Qty Per Inch (tpi)

Hardness Rating

49.0 rockwell c

Thread Size

0.250 inches

Mounting Hole Countersink Angle

Between 98.0 degrees and 102.0 degrees

Material

Steel

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, type 2, cl 2 federal specification single treatment response

NSN

5310-00-777-5771

Part Number

MS21059-4K

Description

Nut,self-locking,plate

CAGE

80205

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

Part MS21059-4K NSN 5310-00-777-5771

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05280

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:

0.1000lbs

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