A-A-360C
Standard Clinch. The standard clinch is represented by a staple driven home through two sheets of paper. Each leg shall be folded under so the tips of each leg face inward towards each other. Further, each tip shall be in a downward slope back toward reentering the paper.
Pin Clinch. The pin clinch is represented by a staple driven home through two sheets of paper. Each leg shall be folded under so the tips of each leg face outward away from each other. Further, each tip shall be in downward slope back toward reentering the paper.
Class B. the stapler shall be designed for light duty desk top operation and be constructed to accommodate a spool of wire, in accordance with CID-A-A-1019,Class B, to make its own staples. Adequate provisions shall be made to prevent the wire from loosening on the spool. The stapler shall have a throat depth of not less than 7.6 cm (3”). The stapler shall be capable of cutting a sufficient section of wire, forming it properly, inserting it into the vertical chute, and admitting it into the clinching device for each stapling operation. The color of the stapler shall be as specified, in accordance with normal commercial practice.
Class C. The stapler shall be designed for light duty desk top operations and shall accommodate a staple strip consisting of no less than 200 commercial “light duty” preformed staples in accordance with A-A-1019, Class C. The color of the stapler shall be as specified, or, if not specified, in accordance with normal commercial practice.
B. Materials. Staples drivers shall be made of spring steel containing not less than 0.6% carbon, and hardened equally over the whole length to an equivalent of not less than 48HRC, when tested as specified in 3.C (4). Anvils shall be made of hardened throughout or case hardened steel with thickness of the case not less than 0.20 mm (0.008”), and shall be not less than 85 (15-N-85) Rockwell superficial for Class A & C staplers, and not less than 68 (15-N-68) Rockwell Superficial for Class B stapler, when tested as specified in 3.C.(4). Springs shall be made of spring steel containing not less than 0.6% carbon and be heat treated to sufficient hardness to provide the necessary spring properties for satisfactory functioning of the staplers. Hinge pins, follow block, bearings, plungers, and channels shall be made from a commercially acceptable corrosion resistant metal. Individual parts shall be anodized, plated, painted, or subjected to a bluing process, whichever is commercially appropriate for the specific function of the part. The striking surface of the handles shall be
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