A-A-1019 Staples, Paper Fastening, Standard And Light Duty

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A-A-1019C

Class C. Light duty staples shall have a 11.1-11.2 mm (0.436- 0.440)” crowns, and 6.4-6.8 mm (0.250-0.266)11 legs. The top face shall be 0.53-0.58 mm (0.021-0.023)”. The wire thickness shall be 0.394-0.445 mm (0.015-0.017)”.

B. Construction.

Class A & C. The temper (carbon content) of the wire shall be such as to permit penetration and firm seated clinching without buckling or fracturing the crown or legs. Staples shall not blemish paper and shall be made of either a corrosion resistant metal or have a finish that resists corrosion. Each staple leg shall be perpendicular to the staple crown in accordance with normal commercial practice. Staples shall be cemented together to form a strip. Cement shall be applied smoothly and shall adhere to each staple sufficiently to insure its exit from the vertical chute without accumulation therein. Unless otherwise specified, stripe shall contain no less than 200 staples, and shall be supplied at no less than 5,000 to a box. The staple legs shall have blunt or chisel-point ends and shall be able to form a standard or pin clinch as specified below:

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 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 a downward slope back toward reentering the paper.

Class B. wire shall be wound on spool so as to unwind easily without tangling or becoming taut on spool as wire is pulled forward by the stapler. The wire shall be such as to permit penetration and forming a standard clinch, as specified above. Staple wire shall be made of brass in accordance with normal commercial practice.

Note: If requested by the Government, contractor shall provide certificate of compliance for corrosion resistance.

C. Testing.

(1). Class A. No evidence of staple fracture, malformation, or malfunction shall be observed, when tested as specified in (3.C.1). Tensile strength of the staple wire shall be not less than 930 MPa (135,000 psi), when tested as specified in (3.C.4).