Master Lock 4696D Extended Reach TSA Lock review

The Master Lock 4696D is built for gear rather than soft suitcases. Its extended reach shackle is 1-7/8 in (48 mm) long and 1/4 in (6 mm) thick, the longest rigid shackle and the thickest shackle of any lock here, and Master Lock says it fits around larger latches on equipment cases and travel gear. The four dial numeric combination gives 10,000 possibilities, ten times the 1,000 of a three-dial lock, and the metal body is 1-5/16 in (35 mm) wide. It is recognized as TSA approved in 29 countries, according to Master Lock, and the store offers it in 1-pack and 2-pack quantities from $14.99. For a regular suitcase the long shackle can be more than you need and the lock costs $5 more than the 4688D, which is why it ranks mid-table. If you fly with a hard case, tripod case or instrument case, it is the strongest match on this list. We compared documented features and published prices and did not test the lock.

Who it is for

travelers with hard cases and large latches

Price

From $14.99 on Master Lock's US store as of November 2026.

Model: 4696D Service & Support Information Best Seller $14.99
Quoted from the vendor pricing page on November 14, 2026.

Key features

• Four dial numeric combination with 10,000 possibilities
• Extended reach shackle 1-7/8 in (48 mm) long and 1/4 in (6 mm) thick
• Durable metal body, 1-5/16 in (35 mm) wide
• Recognized as a TSA-approved luggage lock in 29 countries, according to Master Lock
• Offered in 1-pack and 2-pack quantities

Strengths and weaknesses

• Strength: 10,000 combinations versus 1,000 on three-dial locks
• Strength: Thickest shackle on this list at 1/4 in
• Strength: Long shackle fits large latches on equipment cases
• Weakness: Long rigid shackle can be awkward on small zipper pulls
• Weakness: Costs $5 more than the 4688D
• Weakness: Heavier, larger lock than the compact models here

Key facts

• Price: From $14.99
• Lock type: 4-dial resettable combination
• Shackle: 1-7/8 in long, 1/4 in thick
• Body width: 1-5/16 in (35 mm)
• Combinations: 10,000

Where it ranks

Master Lock 4696D Extended Reach TSA Lock is No. 6 in our Best Luggage Locks verdict.