A-A-51139A
Class 3 – Right-hand offset shank 43 degrees
Style A – Rigid (single size) tool (see table III).
Style B – Multi-size tool (see table II).
2. APPLICABLE DOCUMENTS
2.1 Documents. The following documents of the issue in effect on the date of invitation for bids or request for proposal, form a part of this description to the extent specified herein. The documents should obtained from the contracting activity or as directed by the contracting officer.
Federal Specification PPP-T-1150 – Tools and Too Accessories for Power Driven Metal and Woodworking Machinery, Packaging and Packing of.
Federal Standard FED-STD-376 – Preferred Metric Units for General Use by the Federal Government.
ASTM D 3951 - Standard Practice for Commercial Packaging.
3. SALIENT CHARACTERISTICS
3.1 Design. Holders shall be new and of the manufacturer’s standard design in effect on the date of the solicitation. The holders shall meet the requirements specified herein and shall conform to current commercial industrial practice.
3.2 Material and hardness. The holders shall be made of drop-forged alloy steel, heat treated to a Rockwell C to 40 to 48, Brinell 2.85 to 3.15 hardness or alloy steel, surface hardened to a Rockwell C 50 to 55, Brinell 2.6 to 2.8 hardness.
3.3 Clamping device. The clamping device to secure the cutter bits in the holder shall have a heat treated screw that resists forces normally encountered.
3.4 Wrench. A wrench to fit the clamping screw shall be furnishes with each other.
3.5 Measurement system. All dimensions in this description are given in US units. These measurements may be converted to SI units through the use of the conversion factors and methods specified in FED-STD-376.
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