MANUFACTURER: LC IndustriesSKILCRAFT solid steel case padlocks are made to stringent US Government standards, AA59486 and AA59487, offering superior protection.KEY FEATURES:5pin cylinder, Bumpstop Advanced Cylinder Technology, resists tampering from lock bumping attacks.Stainless steel padlocks are resistant to scale, water, strong cleaners/degreasers, and caustic airborne materials.Lock body measures 13/4 wide.Key retaining with dead bolt locking construction.9 chain included on some types.Keying options: Keyed Alike and Keyed Different depending upon NSN.All locks stamped US or US SET.