Model: 254-6556644FNCOTM-A8

Shoulder Bolt

Special Features:

Coat with tectyl 890 per mil-c-16173. Thread is undercut for relief

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.431 inches

Fastener Length

Between 1.661 inches and 1.671 inches

Head Style

Round w/wrench flats

Head Diameter

0.750 inches

Head Height

Between 0.269 inches and 0.279 inches

Width Between Flats

0.620 inches

Shoulder Diameter

0.4370 inches first shoulder and 0.4375 inches first shoulder

Shoulder Length

1.130 inches first shoulder and 1.140 inches first shoulder

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Hardness Rating

58.0 rockwell c and 62.0 rockwell c

Shoulder Shape

Round first shoulder

Material

Steel comp 1018

Material Specification

Astm a108 assn standard single material response

Thread Series Designator

Unc

NSN

5306-01-383-6906

Part Number

254-6556644FNCOTM-A8

Description

Bolt,shoulder

CAGE

53711

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. For items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. Excludes thumbscrew.

Part 254-6556644FNCOTM-A8 NSN 5306-01-383-6906

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

04905

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:

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