Model: 10-40-256

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.337 inches

Fastener Length

0.750 inches

Head Style

Flat countersunk undercut

Head Diameter

0.225 inches

Head Height

0.313 inches

Internal Drive Style

Cross recess type ii

End Application

An/pas-13 (v) 2, (v) 3; sight, thermal for medium and heavy weapons

Thread Diameter

0.112 inches

Thready Qty Per Inch (tpi)

Countersink Angle

100.0 degrees

Part Name Assigned By Controlling Agency

Fastener, 4-40 x .313 x 100 degree fh, ss, blk oxide, w/ vibra-tite (phillips)

Color

Black

Material

Steel comp 302

Surface Treatment

Oxide

Surface Treatment Specification

Mil-dtl-13924, class 4 federal specification single treatment response

Thread Series Designator

Unc

NSN

5305-01-532-4740

Part Number

10-40-256

Description

Screw,cap,socket Head

CAGE

32865

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 10-40-256 NSN 5305-01-532-4740

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