Model: STD3053-40

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.669 inches and 0.760 inches

Fastener Length

Between 0.740 inches and 0.760 inches

Head Style

Flat chamfer

Head Diameter

Between 0.428 inches and 0.448 inches

Head Height

Between 0.250 inches and 0.270 inches

Hole Diameter

0.070 inches

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

Between 0.219 inches and 0.221 inches

Hole Quantity

Hole Type

Drilled

Thready Qty Per Inch (tpi)

Hardness Rating

32.0 rockwell c and 36.0 rockwell c

Hole Configuration Style

Round internal hexagon

Material

Steel comp 8740

Material Specification

Ams 6322 assn standard single material response

Surface Treatment

Oxide

Surface Treatment Specification

Ams 2485 assn standard single treatment response

Thread Series Designator

Unf

NSN

5305-00-820-9475

Part Number

STD3053-40

Description

Screw,cap,socket Head

CAGE

99193

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 STD3053-40 NSN 5305-00-820-9475

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:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

50.0

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