Lock Bar This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Extension Springs Production of a Lock bar - Retractable extension spring. Approximately 0.275" OD x 1.4" long. Material is steel. Please see drawing for all specifications. 20 Samples required. Part Part Number: PH410 Material: Alloy Steel Material Grade: Technical Specifications Category:Extension Springs Dimensions0.275 x 1.4 inch Tolerance:0.005Annual Usage:7500.0 The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services and are members of the MFG.com community. For more information visit http://www.mfg.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your quoting experience Extension Springs: Extension springs are wound or coiled to oppose or absorb extension between parts or components or provide return force to extended parts. Extension springs are commonly used fully compressed, with hooks or eyes to attach to parts or components.