Model: 491206C1

Ribbed Shoulder Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.320 inches

Fastener Length

Between 2.880 inches and 2.910 inches

Head Style

Flat chamfer

Head Diameter

Between 1.190 inches and 1.310 inches

Head Height

Between 0.310 inches and 0.340 inches

Shoulder Diameter

0.783 inches first shoulder and 0.786 inches first shoulder

Shoulder Length

1.470 inches first shoulder and 1.500 inches first shoulder

Rib Major Diameter

Between 0.810 inches and 0.820 inches

Rib Length

0.500 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

0.060 inches

Rib Quantity

Thread Diameter

0.750 inches

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Shoulder Shape

Ribbed first shoulder

Material

Steel comp 4427 or steel comp 8640

Material Specification

Sae assn standard all material responses

Thread Series Designator

Unf

NSN

5306-01-181-1561

Part Number

491206C1

Description

Bolt,ribbed Shoulder

CAGE

89346

An externally threaded fastener whose threaded portion is of one nominal diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also bolt, ribbed neck.

Part 491206C1 NSN 5306-01-181-1561

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

16014

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:

0.4000lbs

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