Model: MS21250-14044

Internally Relieved Body Bolt

Special Features:

Surface finish on shank and bearing surface of head 32.0 microinches

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 1.254 inches and 1.274 inches

Fastener Length

4.014 inches

Head Style

Double hexagon w/hole

Head Height

0.808 inches

Width Between Flats

0.9375 inches

Extended Washer Diameter

Between 1.428 inches and 1.438 inches

Extended Washer Thickness

0.198 inches

Concentric Hole Depth

0.260 inches

Concentric Hole Diameter

0.187 inches

Thread Diameter

0.875 inches

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

180000 pounds per square inch

Hardness Rating

39.0 rockwell c and 43.0 rockwell c

Material

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

Material Specification

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

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416 type 2 cl 3 federal specification single treatment response

Style Designator

Concentric hole unthreaded

Thread Series Designator

Unjf

NSN

5306-01-298-0640

Part Number

MS21250-14044

Description

Bolt,internally Relieved Body

CAGE

96906

An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.

Part MS21250-14044 NSN 5306-01-298-0640

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06676

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:

0.2000lbs

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: 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