• Material: Steel, Black Oxide Finish
  • Ideal for tough, high-speed, long-life product applications
  • Flat, hexagonal nose design
  • Easy access and adjustment
  • Long spring life
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Item #

Initial End Force

Final End Force

Thread Size (A)

Thread Length (B)

Projection Size (C)

Locking Element Present

List Price

57301 N/A 0.50 lbs N/A 6-1/8 lbs N/A 1/4-20 N/A 1.343 in N/A 0.078 in N/A Yes $12.69
57302 N/A 0.50 lbs N/A 8.00 lbs N/A 5/16-18 N/A 1.406 in N/A 0.088 in N/A Yes $13.17
57303 N/A 0.50 lbs N/A 9-7/8 lbs N/A 3/8-16 N/A 1.532 in N/A 0.097 in N/A Yes $13.44
57304 N/A 0.50 lbs N/A 16 lbs N/A 1/2-13 N/A 1.718 in N/A 0.105 in N/A Yes $13.59
57301X N/A 0.50 lbs N/A 6-1/8 lbs N/A 1/4-20 N/A 1.343 in N/A 0.078 in N/A No $12.69
57302X N/A 0.50 lbs N/A 8.00 lbs N/A 5/16-18 N/A 1.406 in N/A 0.088 in N/A No $13.17
57303X N/A 0.50 lbs N/A 9-7/8 lbs N/A 3/8-16 N/A 1.532 in N/A 0.097 in N/A No $13.44
57304X N/A 0.50 lbs N/A 16 lbs N/A 1/2-13 N/A 1.718 in N/A 0.105 in N/A No $13.59
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