Model: A51B21643-21

Internally Relieved Body Bolt

Description:

3a thread class, right-hand , 0.890 inches thread length, 5.685 inches fastener length, flat chamfer head style, 1.500 inches head diameter.

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.890 inches

Fastener Length

Between 5.685 inches and 5.695 inches

Head Style

Flat chamfer

Head Diameter

1.500 inches

Head Height

0.190 inches

Counterbore Diameter

0.700 inches

Counterbore Depth

0.490 inches

Concentric Hole Diameter

0.375 inches

Thread Diameter

0.750 inches

Thready Qty Per Inch (tpi)

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel

Material Specification

G-1013 fscm 26512 mfr ref single material response

Surface Treatment

Chromium grip

Surface Treatment Specification

Qq-c-320 federal specification single treatment response grip

Style Designator

Counterbore unthreaded

Thread Series Designator

Unjf

NSN

5306-00-003-6569

Part Number

A51B21643-21

Description

Bolt,internally Relieved Body

CAGE

26512

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 A51B21643-21 NSN 5306-00-003-6569

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:

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