Model: MIL-B-45912

Machine Bolt

Description:

2a thread class, right-hand , 1.594 inches thread length, 1.670 inches fastener length, undercut hexagon head style, 0.438 inches head height.

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 1.594 inches and 1.750 inches

Fastener Length

Between 1.670 inches and 1.750 inches

Head Style

Undercut hexagon

Head Height

Between 0.438 inches and 0.458 inches

Width Between Flats

Between 0.985 inches and 1.000 inches

Locking Feature

Distortions bearing surface of head

Thread Diameter

0.750 inches

Features Provided

Finished head

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

150000 pounds per square inch

Hardness Rating

25.0 rockwell c and 34.0 rockwell c

Material

Steel

Material Specification

Astm a449, grade 8 assn standard single material response or sae j429, grade 8 assn standard single material response or gm 300-m mfr ref single material response

Surface Treatment

Cadmium and chromate or zinc

Surface Treatment Specification

Qq-p-416, type 2, class 3 federal specification 1st treatment response or astm b633, type 1, class 3 assn standard 2nd treatment response

Thread Series Designator

Unf

Specification Data

81349-mil-b-45912 government specification and 96906-ms35764 rev d/inactive/ government standard

Nondefinitive Specification/std Data

B composition

Departure From Cited Document

As modified by optional zinc coated surf. Treat.

NSN

5306-00-021-4259

Part Number

MIL-B-45912

Description

Bolt,machine

CAGE

81349

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

Part MIL-B-45912 NSN 5306-00-021-4259

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01847

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:

0.3000lbs

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