
Lock dimensions see image - a 3/8 10mm, b 19/32 15mm, C 1-23/32 44mm Width 2-7/8 73mm. Pro series padlocks are designed for Commercial/Industrial applications. Anti-sparking: zinc alloys are non-sparking and suitable for hazardous location applications such as coal mines, tankers and refineries This listing is for 4 keyed alike locks - 8 keys included.
During a bump attempt, this design prevents the transfer of force from the bump key to the pins and therefore blocks rotation of the cylinder so that the lock remains locked. Featuring bumpstop technology - lock bumping a surprisingly simple method of breaking in through locked doors and padlocks - is undoubtedly the newest emerging threat to personal property security.
Proseries reinforced zinc die-cast why Zinc Castings? For countless decorative and functional applications no other material and process can match the properties and economics of zinc die casting. And virtually all locks in use today are particularly vulnerable to bumping. Ideal for transportation, gates, and industrial uses.
These locks feature bumpstop Advanced Cylinder Technology For explanation see more product details below.
Master Lock Hasp, Solid Steel Hidden Hasp, 9 in. Wide, 770

Then slap on a bump proof, case hardened lock. High; designed for use with Master Lock model numbers 6270 and 6271 hidden shackle locks sold seperately. Crooks cannot pry the lock off because it is surrounded by a ring of high strength steel. Specifications: 9 in. Wide, 4-1/2 in. 6270ka hidden Shackle Lock sold separately.
Attach the maser Lock 770 hasp to your doors with carriage bolts. These days even the dumbest crooks carry bolt cutters. Maximum security: Hasp is designed from solid steel to withstand forcible attacks.
Master Lock - 4 Keyed Alike Universal Trailer Coupler/Tongue Locks 379KA-4

Few materials provide the strength and toughness of zinc alloys. Each lock weighs 2. 4 lbs. Specifications: 9 in. This is a set of 4 keyed alike trailer coupler/tongue locks and is ideal when needing multiple locks that utilize ONLY one key. The universal trailer coupler lock fits 1-7/8in 48mm, lainson, putnam, Valley, Dutton, Fulton, Hammerblow, 2in 51mm and most 2-5/16in 59mm couplers by Reese, Shelby, Atwood, and UFP.
This simple design is difficult to defeat because when it's locked on the trailer the lock rests on top of the coupler see image thus thwarting blunt force from downward hammer strikes. Wide, 4-1/2 in. Limited Lifetime warranty. These locks protects unattended trailers and guards against tow-away theft. It also rotates less rigidity making it harder to break with sledge hammer force.
Rekeyable cylinder for keyed alike convenience with an advanced locking mechanism that resists picking and prying.
WAR-LOK Puck Hasp

Puck completely covers hasp, making it impossible to cut. Impact resistance is significantly higher than cast aluminium alloys, and grey cast iron. This is a set of 4 keyed alike trailer coupler/tongue locks and is ideal when needing multiple locks that utilize ONLY one key. War-lok puck lock hasp item number: ph-10 the wAR-LOK Heavy Duty Hasp fits your van rear and swing doors.
Each lock weighs 2. 4 lbs. Maximum security: Hasp is designed from solid steel to withstand forcible attacks. Puck padlock sold separately. And is simple to install and remove. Made with reinforced zinc die-cast resists rust and corrosion. Best used for trucks, gates, vans, industrial, vending, storefront and business gates.
Mounting bolts not included. Specifications: 9 in.