Apparatus for holding and applying torque to a nut

An apparatus for holding and applying torque to a nut comprising a keyway, the apparatus comprising:

• a longitudinal body comprising a longitudinal axis and a body channel on an outer surface of the longitudinal body, the body channel comprising a first body channel portion having a first depth at a first end of the body channel, a second body channel portion having a second depth deeper than the first depth at a second end of the body channel, a channel base surface extending along the length of the body channel and facing radially outward from the longitudinal axis of the longitudinal body, and a step formed between the first body channel portion and the second body channel portion;
• a longitudinal key at least partially disposed in the body channel, the longitudinal key comprising a first key portion at the first end of the body channel, a second key portion at the second end of the body channel comprising a chamfered portion configured to engage the keyway of the nut, and a key base surface extending along the length of the longitudinal key and facing radially inward toward the longitudinal axis of the longitudinal body;
• and
• a collar surrounding the first key portion and radially compressing the first key portion against the first body channel portion,
• wherein the key base surface of the first key portion contacts the channel base surface and wherein the key base surface of the second key portion extends over the channel base surface forming a gap between the key base surface of the second key portion and the channel base surface prior to insertion of the second key portion into the keyway of the nut, and
• wherein the second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion is inserted into the keyway of the nut.

An apparatus for holding and applying torque to a nut comprising a keyway, the apparatus comprising:

• a longitudinal body comprising a longitudinal axis and a body channel, the body channel comprising a first body channel portion at a first end of the body channel, a second body channel portion at a second end of the body channel, and a channel base surface extending along the length of the body channel and facing radially outward from the longitudinal axis of the longitudinal body;
• a longitudinal key at least partially disposed in the body channel, the longitudinal key comprising a first key portion having a first depth at the first end of the body channel, a second key portion having a second depth shallower than the first depth at the second end of the body channel comprising a chamfered portion configured to engage the keyway of the nut, and a key base surface extending along the length of the longitudinal key and facing radially inward toward the longitudinal axis of the longitudinal body, and a step formed between the base surface of the first key portion and the base surface of the second key portion;
• and
• a collar surrounding the first key portion and radially compressing the first key portion against the first body channel portion,
• wherein the key base surface of the first key portion contacts the channel base surface and wherein the key base surface of the second key portion extends over the channel base surface forming a gap between the key base surface of the second key portion and the channel base surface prior to insertion of the second key portion into the keyway of the nut, and
• wherein the second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion is inserted into the keyway of the nut.