Model: A51G20538-11

Internally Relieved Body Bolt

Description:

3a thread class, right-hand , 0.339 inches thread length, 3.324 inches fastener length, round w/wrench flats chamfered head style.

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.339 inches

Fastener Length

Between 3.324 inches and 3.329 inches

Head Style

Round w/wrench flats chamfered

Head Diameter

0.875 inches

Head Height

0.125 inches

Width Between Flats

0.688 inches

Shoulder Diameter

Between 0.4965 inches and 0.4985 inches

Shoulder Length

Between 2.985 inches and 2.990 inches

Shank Unthreaded Hole Diameter

0.075 inches first hole and 0.080 inches first hole

Concentric Hole Depth

2.860 inches

Concentric Hole Diameter

Between 0.339 inches and 0.349 inches

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Hardness Rating

46.0 rockwell c and 49.0 rockwell c

Distance From Head Largest Bearing Surface To Shank Hole Center

3.184 inches first hole and 3.189 inches first hole

Material

Steel

Material Specification

G-1010 mfr ref single material response

Surface Treatment

Chromium

Surface Treatment Specification

Qq-c-320 federal specification single treatment response

Style Designator

Concentric hole unthreaded

Thread Series Designator

Unjf

NSN

5306-00-009-7616

Part Number

A51G20538-11

Description

Bolt,internally Relieved Body

CAGE

61174

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 A51G20538-11 NSN 5306-00-009-7616

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:

0.1000lbs

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:

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