Model: 4-40 UNC-2AX3/8

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.310 inches and 0.390 inches

Fastener Length

Between 0.360 inches and 0.390 inches

Head Style

Hexagon

Head Height

Between 0.049 inches and 0.060 inches

Width Between Flats

Between 0.181 inches and 0.187 inches

Locking Feature

Patch threads or strip threads

Internal Drive Style

W/o internal drive

Thread Diameter

0.112 inches

Thready Qty Per Inch (tpi)

Hardness Rating

36.0 rockwell c and 45.0 rockwell c

Material

Steel comp 303se or steel comp 304l or steel comp 302b or steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unc

NSN

5305-01-027-8957

Part Number

4-40 UNC-2AX3/8

Description

Screw,cap,socket Head

CAGE

72962

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part 4-40 UNC-2AX3/8 NSN 5305-01-027-8957

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16282

FIIG:

A003B0

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:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment