Model: BK-231

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Fastener Length

3.660 inches

Head Style

Flat chamfer

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Material

Steel uns k03104

Material Specification

Astm a574 assn standard single material response

Surface Treatment

Phosphate zinc or oxide zinc

Surface Treatment Specification

Mil-c-13924 cl1 military specification single treatment response or dod-p-16252 ty z cl2 military specification single treatment response

Thread Series Designator

Unc

NSN

5305-01-456-4773

Part Number

BK-231

Description

Screw,cap,socket Head

CAGE

57760

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 BK-231 NSN 5305-01-456-4773

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:

096640

UFC:

50600

LTL:

70.0

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