Model: 1/4-20UNC-3AX.750 IN.LG.NICU

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.489 inches and 0.589 inches

Fastener Length

0.750 inches

Head Style

Flat countersunk

Head Diameter

Between 0.480 inches and 0.531 inches

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

0.156 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

39.0 rockwell c and 45.0 rockwell c

Minimum Yield Strength

155000 pounds per square inch

Countersink Angle

Between 80.0 degrees and 84.0 degrees

Surface Finish

32.0 microinches bearing surface of head

Surface Finish

32.0 microinches fastener

Color

Black

Material

Nickel alloy 400

Material Specification

Qq-n-281 cla federal specification single material response

Surface Treatment

Oxide

Surface Treatment Specification

Mil-c-13924 military specification single treatment response

Thread Series Designator

Unc

Nondefinitive Specification/std Data

4 type

NSN

5305-01-384-2101

Part Number

1/4-20UNC-3AX.750 IN.LG.NICU

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 1/4-20UNC-3AX.750 IN.LG.NICU NSN 5305-01-384-2101

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)