MB251-3-4

Close Tolerance Bolt

NSN 5306-01-136-1743

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

25 EA

NIIN:

011361743

Detail Specifications

Thread Class:

Thread Direction:

Right-hand

Thread Length:

Between 0.328 inches and 0.348 inches

Fastener Length:

Between 0.573 inches and 0.603 inches

Head Style:

Hexagon

Head Height:

Between 0.110 inches and 0.125 inches

Width Between Flats:

Between 0.365 inches and 0.376 inches

Grip Diameter:

Between 0.1885 inches and 0.1895 inches

Thread Diameter:

0.190 inches

Grip Length:

Between 0.240 inches and 0.260 inches

Thready Qty Per Inch (tpi):

Surface Finish:

16.0 microinches threads

Surface Finish:

63.0 microinches bearing surface of head

Surface Finish:

63.0 microinches grip

Material:

Titanium alloy

Material Specification:

Nas 621 assn standard single material response

Surface Treatment:

Aluminum

Surface Treatment Specification:

Mil-c-83488, ty2, cl3 military specification single treatment response

Thread Series Designator:

Unjf

NSN:

5306-01-136-1743

Item Name:

Bolt,hex Head,close Tolerance

Cage Code:

L4528

Manufacturer Part Numbers

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

VS3207-3-4

Cage Code:

06950

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

ST3M731-3-4

Cage Code:

0UCY9

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

111364-3-4

Cage Code:

K5673

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

SC2663-3-4

Cage Code:

06950

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

PBF1264-3-4

Cage Code:

27624

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

ST3M731-3-4

Cage Code:

76301

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

MB251-3-4

Cage Code:

73197

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

801651-3-4

Cage Code:

0PTK6

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

ST3M731-3-4

Cage Code:

0PTK6

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

10115948

Cage Code:

A486G

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

VS3207-3-4

Cage Code:

92215

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

27851

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:

136500

UFC:

68455

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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100% Genuine Manufacturers Parts
Every Product thoroughly Inspected
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Pricing & Availability

Submit this form for current pricing and availability quote on part number mb251-3-4 and/or cross reference parts.

Definition Definition of approved item name (AIN): "Close Tolerance Hex Head Bolt"

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.