175-257

Machine Screw

NSN 5305-00-017-5257

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

UOM:

NIIN:

000175257

Detail Specifications

Thread Class:

Thread Direction:

Right-hand

Thread Length:

1.250 inches

Fastener Length:

1.250 inches

Head Style:

Hexagon

Head Height:

Between 0.272 inches and 0.291 inches

Width Between Flats:

Between 0.612 inches and 0.625 inches

Internal Drive Style:

Cross recess type 1

Thread Diameter:

0.438 inches

Thready Qty Per Inch (tpi):

Min. Tensile Strength (psi):

55000 pounds per square inch

Hardness Rating:

Between 95.5 rockwell b and 100.0 rockwell b

Screw Material:

Steel

Screw Material Specification:

Sae gr 1 or 2 assn standard single material response

Thread Series Designator:

Unc

NSN:

5305-00-017-5257

Item Name:

Bolt,washer Head

Cage Code:

7X677

Manufacturer Part Numbers

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

175257

Cage Code:

24617

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

175257

Cage Code:

21450

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06657

FIIG:

A500D0

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:

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Washer Head Bolt"

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.