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Specifications

LENGTH 8" x 1/2" x 1"<br>8" x 3/4" x 1"<br>12" x 3/4" x 1"<br>12" x 1" x 2"
Weight (lb) 30

The P4W-SET-B from Suburban Tool is a 4-way ground precision steel parallel set containing four matched pairs, in sizes 8" x 1/2" x 1", 8" x 3/4" x 1", 12" x 3/4" x 1" and 12" x 1" x 2".

Made of alloy steel hardened to Rc 58-60 and ground on four sides, these parallels are held to size within 0.00025", so they can be used individually or mixed across sizes for workholding where extra precision is required.

  • Four matched pairs ground on four sides for flexibility
  • Held to size within 0.00025" on four sides
  • Adjacent sides square within 0.0005" per inch
  • Opposite sides parallel within 0.0001" per 6 inches
  • Alloy steel hardened to Rc 58-60 for durability
  • Furnished in a wooden holder marked with sizes
  • Made in the USA by Suburban Tool
  • Each set includes four pairs of parallels in the sizes shown.
  • Pairs are matched in size on the width and height to a tolerance of ±0.0002" on 6", 8" & 12" lengths and ±0.0003" for longer lengths.
  • Total parallelism, straightness over the full length is 0.0001" on 6" & 8" lengths, 0.0002" on 12" lengths & 0.0003" on longer lengths.
  • Adjacent ground sides are square with each other within 0.0004", except the 1/4" wide models, which are square within 0.0005".

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