Model: B18.3.1M-1986

Socket Head Cap Screw

Properties:

Thread Direction

Right-hand

Thread Length

5.0 millimeters

Fastener Length

Between 7.4 millimeters and 7.5 millimeters

Head Style

Flat fillister

Head Diameter

Between 4.33 millimeters and 4.50 millimeters

Head Height

Between 2.40 millimeters and 2.50 millimeters

Internal Drive Style

Hexagon

End Application

1425-01-442-4821

Thread Diameter

2.50 millimeters

Width Across Flats

2.0 millimeters

Thread Pitch In Millimeters

0.45

Part Name Assigned By Controlling Agency

Metric socket thread cap screw

Material

Stainless steel

Material Specification

A1-70 iaw astm a380 assn standard single material response

Surface Treatment

Passivate

Surface Treatment Specification

Cleaned, descaled, passivated iaw astm a380 assn standard single treatment response

Thread Series Designator

Specification Data

80204-asme/ansi b18.3.1m-1986 professional/industrial association standard

Nondefinitive Specification/std Data

D material and h style and 025005 size

NSN

5305-01-612-2556

Part Number

B18.3.1M-1986

Description

Screw,cap,socket Head

CAGE

80204

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 B18.3.1M-1986 NSN 5305-01-612-2556

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