Model: ST2591-10

Extended Washer Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with metallic insert

Washer Outside Diameter

0.410 inches

Overall Height

Between 0.308 inches and 0.328 inches

Nut Style

Double hexagon

Washer Thickness

Between 0.045 inches and 0.060 inches

Width Across Flats

0.312 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Hardness Rating

34.0 rockwell c

Thread Size

0.250 inches

Material

Nickel alloy uns n07001

Material Specification

Ams 5709 assn standard single material response

Precious Material And Location

On threads silver

Precious Material

Silver

Surface Treatment

Silver threads

Surface Treatment Specification

Ams 2411 assn standard single treatment response threads

NSN

5310-01-320-7364

Part Number

ST2591-10

Description

Nut,self-locking,extended Washer

CAGE

77445

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part ST2591-10 NSN 5310-01-320-7364

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29729

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:

50.0

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)