NAS1581A4H9

Close Tolerance Screw

NSN 5305-00-527-1875

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

1 EA

NIIN:

005271875

Product Technical Spec.

Thread Class:

Thread Direction:

Right-hand

Thread Length:

Between 0.378 inches and 0.428 inches

Fastener Length:

Between 0.950 inches and 0.980 inches

Head Style:

Flat countersunk

Head Diameter:

Between 0.3504 inches and 0.3988 inches

Grip Diameter:

Between 0.2485 inches and 0.2495 inches

Internal Drive Style:

High-torque

Thread Diameter:

0.250 inches

Grip Length:

Between 0.552 inches and 0.572 inches

Thready Qty Per Inch (tpi):

Min. Tensile Strength (psi):

160000 pounds per square inch

Hardness Rating:

36.0 rockwell c and 40.0 rockwell c

Countersink Angle:

Between 99.0 degrees and 101.0 degrees

Material:

Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740

Material Specification:

Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response

Surface Treatment:

Cadmium

Surface Treatment Specification:

Qq-p-416, type 2 class 2 federal specification single treatment response

Thread Series Designator:

Unf

Specification Data:

80205-nas1581 professional/industrial association standard

NSN:

5305-00-527-1875

Item Name:

Screw,machine,flat-head,close Tolerance

Cage Code:

80205

Cross Referenced Parts

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

NAS1581F4H9

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

5M696

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9T

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

5M696

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9T

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

1DN91

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581F4H9

Cage Code:

5M696

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

NAS1581A4H9T

Cage Code:

80205

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29294

FIIG:

A003B0

Concept No.:

App. Key:

Cond. Code:

Status:

Part Materials

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:

713

TCC:

SHC:

ACC:

Construction Materials

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100% Genuine Manufacturers Parts
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Sales Record Retention of 7 years
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Pricing & Availability

Submit this form for current pricing and availability quote on part number nas1581a4h9 and/or cross reference parts.

Definition Definition of approved item name (AIN): "Close Tolerance Flat-head Machine Screw"

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.