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DAYCO EASTMAN HOSE AND HOSE ASSEMBLY

PART NUMBERING

How to Read Part Numbers

Hose Products

Hose Assembly Part Numbers



General InformationHow to Read Part Numbers

HOW TO READ HOSE PART NUMBERS

Dayco Eastman HOSE PART NUMBERS are composed of letter(s) and numbers which identify the hose style, and

two-digit number which designates the size. The numerical size code follows the industry standard “dash number” system which gives the hose I.D. in sixteenths of an inch.

Actual I.D. (inches) Hose Dash Number1/8 -023/16 -031/4 -045/16 -053/8 -061/2 -085/8 -103/4 -121 -161-1/4 -201-1/2 -242 -322-1/2 -403 -48

Part Number Definition*

M7 XX

HOSE STYLE INDICATES HOSE I.D.

IN SIXTEENTHS OF AN INCH

* CERTAIN HOSE STYLES VARY FROM THIS DEFINITION, SEE PAGE 21 FOR DETAILS.

HOW TO READ COUPLING PART NUMBER DESCRIPTIONS

Dayco Eastman COUPLING PART NUMBER DESCRIPTIONS have two basic components. The first is the coupling style

and hose size, which is indicated by a two-letter series and followed by a two-digit SAE “dash” size. This is fol-lowed by the termination size and style.

Part Number Definition

HU 08 - 08 MPSERIES TERMINATION STYLE

HOSE SIZE TERMINATION SIZE



21

Actual I.D. in inches Hose Dash Number Hose Dash Numbefor styles

BH,GL,Y9,T1 & T4

1/8 2

3/16 3 4

1/4 4 5

5/16 5 6

3/8 6

13/32 8

1/2 8 10

5/8 10 12

3/4 12

7/8 16

1 16

1 1/8 201 1/4 20

1 3/8 24

1 1/2 24

1 13/16 32

2 32

2 1/2 40

3 48

Specifications:

General performance data and nominal dimensions for

hose will be found in the bulk hose sections of thiscatalog. All critical performance specifications anddimensions should be cleared by our Product

Engineering Group. All applicable hose styles are testedin accordance with the latest revisions of the SAE

specifications with Dayco Eastman couplings and meetor exceed the standards established by the Society of

Automotive Engineers.

Hose Identification:

All SAE hoses are branded with a line parallel to thelongitudinal axis as a visual aid to prevent installing hose

in a twisted position. As part of this line, the hose is

branded with the applicable SAE specification number,and the size. All hoses will be branded with DaycoEastman part number and working pressure.

Hose Part Numbers:

Dayco Eastman hose part numbers are composed

letter(s) or letter(s) and numbers which identify the hostyle, and a two digit number which designates the si

The numerical size code follows the industry standa“dash number” system which gives the hose I.D.

sixteenths of an inch.

Examples:

BXX08 = Style BXX hose with 1/2” I.D.

HTB16 = Style HTB hose with 1” I.D.

There are exceptions to the size number indicat

sixteenths of an inch of inside diameter. These hostyles evolved by using the same number system as t

of connecting tubing, which was size numberaccording to the tube O.D. Dayco Eastman hoses fallunder this exception are styles BH, GL, Y9, T1 and T4

General InformationHose Products



Hose part number - HFS208

24

Dayco Eastman part numbers are a combination of the individual part numbers of the hose and the couplings used in

the assembly.

EXAMPLE: An assembly using1 / 2” ID hose (HFS208); coupled on one end with

3 / 4 - 16, 37° JIC swivel female(HU08-08FJ); and on one end with 1 / 2 - 14, rigid male pipe NPTF dryseal thread (HU08-08MP); with an

overall length of 36”. EXAMPLE: HFS208HU0808FJ08MP-36

H F S 2 0 8 - H U 0 8 - 0 8 F J 0 8 M P - 3 6 . 0 0

2nd coupling part number HU08-08MP

1st coupling part number - HU08-08EJ

Coupling series - HU08 (also indicates hose size)

Overall length ofassembly in inches.

When both couplings are the same, the coupling part number is not repeated to assure that an error is not madeduring identi fication of assembly. Where spring guards are desired, the spring guard part number is inserted after

the overall length of the assembly. EXAMPLE: HFS208HU0808FJ08MP-36 with 1712-95

HFS208 HU08 08FJ 08MP - 36.00 with 1712 - 95

Spring guard applied to overall length

Measuring assembly lengths: Dayco Eastman measures assemblies in several different ways. Each assembly is

measured according to the type and angle of the coupling. Assemblies with straight couplings are measured from

extreme end to end.

For assemblies that have flanged couplings, the measurement is taken to the centerline of the sealing surface.

Bent tube ends and flange head couplings can be oriented at different angles to one another and must be specifiedwhen ordering. Per the above illustration, the orientation angle is measured with the first coupling pointing downwardand looking at the assembly from the second coupling. The angle between the two is measured clockwise.

On assemblies that contain OFT style (O-ring face seal) couplings, the overall measurement is taken from flange endto flange end. The measurement is taken with the nut pulled back to expose the flange end (see illustration below).

L

L

L

L

General InformationHose Assembly Part Numbers

225º

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