Model: 256-6603687-VHBM-99

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.125 inches

Fastener Length

1.250 inches

Head Style

Flat chamfer

Head Diameter

Between 0.550 inches and 0.562 inches

Head Height

Between 0.368 inches and 0.375 inches

Locking Feature

Pellet threads or strip threads or patch threads

Internal Drive Style

Hexagon

Thread Diameter

0.375 inches

Width Across Flats

0.312 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

39.0 rockwell c fastener and 45.0 rockwell c fastener

Material

Plastic polyamide locking feature

Material

Steel fastener

Material Specification

Astm a574 y 2 assn standard single material response fastener

Surface Treatment

Aluminum fastener and chromate fastener

Surface Treatment Specification

Mil-c-83488 type 2 cl 3 military specification single treatment response fastener

Thread Series Designator

Unrc

NSN

5305-01-330-7572

Part Number

256-6603687-VHBM-99

Description

Screw,cap,socket Head

CAGE

53711

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 256-6603687-VHBM-99 NSN 5305-01-330-7572

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:

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: 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