Model: 431B502-29

Internal Wrenching Bolt

Special Features:

Thread diameter begins at 1.000 inch with taper angle of thread to head 0.004 to 0.006 inches, optional head may be knurled

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.620 inches

Fastener Length

3.260 inches

Head Style

Flat chamfer

Head Diameter

Between 1.852 inches and 1.875 inches

Head Height

Between 1.236 inches and 1.250 inches

First Diameter From Head

Between 1.069 inches and 1.074 inches

Distance From Largest Bearing Surface Of Head To End Of First Diameter

1.640 inches

Internal Drive Style

Hexagon

Thread Diameter

1.000 inches

Width Across Flats

Between 0.875 inches and 0.880 inches

Thready Qty Per Inch (tpi)

Criticality Code Justification

Ahym

Externally Relieved Body Diameter Quantity

Material

Steel comp 304 or steel comp 316 or steel comp 321

Material Specification

Astm a193 assn standard all material responses

Surface Treatment

Copper

Thread Series Designator

Unc

Reference Number Differentiating Characteristics

As differentiated by tapered threads

NSN

5306-01-181-7472

Part Number

431B502-29

Description

Bolt,internal Wrenching

CAGE

01289

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

Part 431B502-29 NSN 5306-01-181-7472

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06666

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:

3.0000lbs

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