Model: 341B1

Ribbed Shoulder Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.625 inches

Fastener Length

1.188 inches

Head Style

Hexagon

Head Height

0.188 inches

Width Between Flats

0.562 inches

Shoulder Diameter

0.390 inches first shoulder and 0.400 inches first shoulder

Shoulder Length

0.406 inches first shoulder

Rib Major Diameter

Between 0.415 inches and 0.423 inches

Rib Length

0.156 inches

Distance From Largest Diameter Of Bearing Surface Of Head To Ribs

0.062 inches

Thread Diameter

0.375 inches

Thready Qty Per Inch (tpi)

Shoulder Shape

Ribbed first shoulder

Material

Steel

Thread Series Designator

Unf

NSN

5306-00-275-5700

Part Number

341B1

Description

Bolt,ribbed Shoulder

CAGE

56442

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 341B1 NSN 5306-00-275-5700

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:

4.0000lbs

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