Model: 4F81B1

Knurled Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Counterbore Diameter

0.375 inches nut

Nut Style

Knurled

Nut Diameter

0.625 inches

Nut Thickness

0.375 inches

Knurl Width

0.156 inches

Nut Counterbore Depth

0.016 inches nut

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Countersink Angle

45.0 degrees nut

Part Name Assigned By Controlling Agency

Navy special project

Material

Copper alloy

Material Specification

Qq-b-626 federal specification single material response

NSN

5310-00-796-4786

Part Number

4F81B1

Description

Nut,plain,knurled

CAGE

98296

A nut, round in shape, having all or part of its outer surface knurled. It may have provisions for external wrenching. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, round. (when height or thickness, and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).

Part 4F81B1 NSN 5310-00-796-4786

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15886

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:

093460

UFC:

48930

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7415290000
SITC: 69432
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Copper screws, nuts, bolts, rivets, and other fasteners not threaded