Model: 4-40UNC-3AX0.312CRES

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.312 inches

Fastener Length

0.312 inches

Head Style

Knurled no. 1

Head Diameter

Between 0.176 inches and 0.183 inches

Head Height

Between 0.108 inches and 0.112 inches

Internal Drive Style

Hexagon

Thread Diameter

0.112 inches

Width Across Flats

Between 0.094 inches and 0.095 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

80000 pounds per square inch

Hardness Rating

39.0 rockwell c and 45.0 rockwell c

Material

Steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384

Material Specification

66 federal standard all material responses

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Supplementary Features

Fscm 80204-ansi b18.3 table 3 size 4

Thread Series Designator

Unc

Specification Data

81348-ff-s-86 government specification

Nondefinitive Specification/std Data

6 type and 4-40 size and 5/16in. Length and 3assjseunc class

NSN

5305-01-219-9605

Part Number

4-40UNC-3AX0.312CRES

Description

Screw,cap,socket Head

CAGE

70318

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 4-40UNC-3AX0.312CRES NSN 5305-01-219-9605

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:

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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