Found in a pile of building supplies (mostly stuff for a drop ceiling). It is steel and when you loosen or tighten the threads the blade moves up and down. I say

56 Essential Survival Skills for Homeowners - This Old House

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Download PDF, 16 MB - Crowder Supply

CONTRACTOR - White Cap Construction Supply

Found in a pile of building supplies (mostly stuff for a drop ceiling). It is steel and when you loosen or tighten the threads the blade moves up and down. I say

Silo - Wikipedia

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Metal rod with a little hook. Threading on the other side. Stop for scale. Got it from a thrift store : r/whatisthisthing

Static line parachute hi-res stock photography and images - Alamy

USGI Post WW2 43A9502 Paratrooper Static Line Hook With Strap For T-1 Parachute

Can anyone identify this vintage carabiner? : r/vintage

Paratrooper Static Line Keychain *Jumpmaster

WW2 Paratrooper Airborne T5 Parachute Static Line Hook T7