Specification Brand : Carr Lane Manufacturing BulletPoint1 : A: 1/4-20 BulletPoint2 : Initial End Force: 1 BulletPoint3 : Final End Force: 5 BulletPoint4 : C: 1/8 BulletPoint5 : D: 1/2 ItemName : CL-4-HRP Carr Lane Manufacturing Hand-Retractable Plunger, Knurled Head, Standard Plunger: Thread 1/4-20 ItemTypeKeyword : ball-nose-spring-plunger Manufacturer : Carr Lane Manufacturing Material : Plunger > 12L14 steel, carburized-hardened, zinc plated clear chromate. Body and knurled head > 12L14 steel, zinc plated clear chromate. Spring > 17-7PH stainless. DFARS and RoHS compliant. PartNumber : CL-4-HRP ProductDescription : Spring-loaded plunger that locks in retracted position. To lock, pull knurled knob back and turn 90?. Standard plunger has a slight taper on plunger tip for easy alignment. Also available with a radiused Delrin plunger (slightly larger plunger diameter and lighter spring force). Available in steel or stainless steel. Made in USA. ProductSiteLaunchDate : 2013-12-20T18:15:56.463Z