A-A-2370 Pad, Floor Polishing Machine (Thin)This commercial item description covers two types of thin, floor maintenance pads used for polishing, buffing, scrubbing, and stripping floors. The round, thin floor pads shall be suitable for mounting on power-driven, rotary-disc type floor maintenance machines, operating in a speed range between 150 and 350 rpm. The rectangular floor pads are for mounting on the oscillating type floor maintenance machines. The floor pads are intended for heavy duty floor care maintenance machines. The floor pads are intended for heavy duty floor care maintenance and shall be suitable for use on various type floors.

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A-A-2370

Type II, nylon and polyester floor pads. Type II, nylon and polyester pads, shall be made of one piece, unified mat. The materials of the pads shall be formed or bonded into a solid disc. Pads of spirally wound ribbons of interlocking fibers are not acceptable.

Class 1. The abrasive content for the type II, class 1 buffing and polishing pads shall be no more than 40 percent by weight. One hundred percent of the total abrasive particles shall pass through a 200 mesh screen. A minimum of 90 percent of we abrasive particles shall pass through a 270 mesh screen.

Class 2. The abrasive content for the type II, class 2 scrubbing pads shall be no more than 60 percent by weight. One hundred percent of the total abrasive particles shall pass through a 150 mesh screen. A minimum of 75 percent of the particles shall pass through a 200 mesh screen. A minimum of 95 percent of the remaining particles shall pass through a 270 mesh screen.

 
Class 3. The abrasive content for the type II, class 3 stripping pads shall be no more than 65 percent by weight. One hundred percent of the total abrasive particles shall pass through a 100 mesh screen. A minimum of 65 percent of the particles shall pass through a 150 mesh screen. A minimum of 45 percent of the remaining particles shall pass through a 150 mesh screen.

Workmanship. The floor pads shall be free from any defects, imperfections, or material that would adversely affect performance serviceability or appearance, or may cause any undesirable effects during use.

Quality assurance provisions.

Responsibi1ity for inspection. Unless otherwise specified in the contract a purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. Inspection records of the examinations or tests shall be kept complete and available to the Government as specified in the contract or purchase order. The Government reserves the right to perform any of the inspections set forth in the CID where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements.

Inspection. Sampling for inspection shall be in accordance with

MIL-STD-105, Sampling Procedures and Tables for Inspection by Attributes, except where otherwise indicated herein.

Visual and dimensional examination .The pad shall be examined for defects in finish, construction, workmanship, and dimensional requirements. Defects shall be as classified in Table 1. The inspection level shall be level II with an acceptable quality level (AQL} of 4.0 defects per hundred units for major defects and 6.5 defects per hundred units total.