Model: 2-56UNCX1/4BHA

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.184 inches and 0.250 inches

Fastener Length

Between 0.220 inches and 0.250 inches

Head Style

Button

Head Diameter

Between 0.154 inches and 0.164 inches

Head Height

Between 0.038 inches and 0.046 inches

Internal Drive Style

Hexagon

Thread Diameter

0.086 inches

Width Across Flats

0.050 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

36.0 rockwell c and 45.0 rockwell c

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 4037

Material Specification

Ff-s-86 federal specification single material response

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416 ty2 cl3 federal specification single treatment response

Thread Series Designator

Unrc

NSN

5305-01-293-2887

Part Number

2-56UNCX1/4BHA

Description

Screw,cap,socket Head

CAGE

08664

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 2-56UNCX1/4BHA NSN 5305-01-293-2887

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:

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