Table I
|
Lead Diameter (mm) |
Range (mm) |
|
0.3 |
0.37 to 0.39 |
|
0.5 |
0.55 to 0.58 |
|
0.7 |
0.69 to 0.73 |
|
Diameter shall be uniform throughout the entire length of the lead (see section II). |
|
The hardness range shall be expressed as a “grade” as defined by ASTM C709 and be one of the following, as specified.
6H, 5H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B and 6B
The hardness of 0.5 and 0.7 mm leads shall be such that no inversion shall take place as the density transmits from 6H to 4B for the leads of the same brand. With respect to the 0.3 mm leads (nominal size), no inversion shall take place as the density transmits from 6H to 2B for the leads of the same brand. The grades and lack of inversions shall be certified by the vendor to be available to the government in the form of a chart of line densities for the full range of grades, upon request.
3.5 Workmanship. Leads shall be clean and free from defects which adversely affect serviceability or performance. The container shall be in accordance with the manufacturer’s best commercial practice and shall have no defects that affect serviceability or appearance.
4. Regulatory Requirements: The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR).
5. Quality Assurance Requirements:
5.1 General Quality Statement. The products provided shall conform to the producer’s own drawings, specifications, standards and quality assurance practices and be the same product offered for sale in the commercial market. The government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provision of the contract.
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