Model: F3721

Hexagon Slotted Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Slotted, hexagon

Nut Height

Between 0.172 inches and 0.203 inches

End Application

W/s: aircraft (ac-130h, mc-130h, ec-130e, hc-130); engine, aircraft, f100-pw-20 (f-16a/b/c/d); aircraft, t-2; engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p); engine, aircraft, tf-33-p-7 (c-141a/b); engine, aircraft tf33-p-3/5/9 (c/ec-135, b-52h); aircraft, c-2a (reprocured); helicopter, mh-53e; joint stars target radar system; engine, aircraft, t56-a-7/15 (c-130b/e/h/n/p)

Width Across Flats

Between 0.490 inches and 0.502 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.312 inches

Bearing Surface Type

Chamfered or washer faced

Bearing Surface Finish

125.0 microinches

Material

Steel

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2, cl 3 federal specification single treatment response

NSN

5310-00-176-8109

Part Number

F3721

Description

Nut,plain,slotted,hexagon

CAGE

0CSK6

A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, castellated, hexagon.

Part F3721 NSN 5310-00-176-8109

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01859

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