ZZ-H-617 Hose, Rubber, Windshield WiperThis specification covers one type of hose for use as flexible air or vacuum lines on automotive windshield wiper systems.

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ZZ-H-617C

4. QUALITY ASSURANCE PROVISIONS

4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements.

4.1.1 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities of sufficient accuracy, quality, and quantity to permit performance of the required inspection shall be used. The establishment and maintenance of a calibration system to control the accuracy of the measuring and test equipment shall be in accordance with ANSI/NCSL Z540-1 or equivalent.

4.2 Quality conformance inspection.

4.2.1 Individual tests. Inspection of the product for delivery shall consist of subjecting each hose length to the individual tests specified in table IV. Any item failing to meet the requirements of the individual tests shall be immediately removed from the lot.

Table IV. Inspection requirements.

Requirement	Requirement Paragraph	Test Paragraph	Individual Tests	Sampling Tests
Examination of product	3.2, 3.3, 3.5, 3.7	4.4.1	x
Burst pressure	3.4.1	4.4.2		x
Vacuum resistance	3.4.2	4.4.3		x
Flexibility	3.4.3	4.4.4		x
Low temperature flexibility	3.4.4	4.4.5		x
Tensile strength	3.4.5	4.4.6		x
Accelerated aging	3.4.6	4.4.7		x
Ozone resistance	3.4.7	4.4.8		x

4.2.2 Sampling tests. Hose lengths, randomly selected from a production lot (see 4.2.2.1) to form an inspection sample (see 4.2.2.2), shall be subjected to the sampling tests specified in table IV.

4.2.2.1 Production lot. A production lot shall consist of all hose of one size manufactured on the same production line(s) by means of the same production techniques, materials, controls, and design during the same continuous production run.

4.2.2.2 Inspection sample. An inspection sample shall consist of hose lengths randomly selected from the production lot without regard to quality. For each full or partial increment of 750 feet of bulk hose produced in the continuous run, one sample shall be subjected to the sampling tests.