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Four locks, and a combination count off by a factor of ten

Fosmon Three-digit combination padlocks, 4-pack

A four-pack of conventional shackle padlocks whose own listing understates its combination count as "hundreds" where it is a thousand.

Four Fosmon TSA approved combination luggage padlocks

Fosmon Three-digit combination padlocks, 4-pack

A four-pack of conventional shackle padlocks whose own listing understates its combination count as "hundreds" where it is a thousand.

Amazon reference
B076JHYV2Z
EAN
0879565510527
  • Four locks in one purchase, each with its own settable code
  • A zinc alloy body with a hardened steel shackle, stated light and strong
  • Says "hundreds of possible combinations" for a three-digit lock, which has exactly 1,000

Best for: Four bags in a family, where the locks only have to close zips

≈ $21
Check price on Amazon

Specifications

Amazon reference
B076JHYV2Z
EAN
0879565510527

Four locks, each with its own settable code, in a zinc alloy body with a hardened steel shackle and a limited lifetime warranty. For a family with four bags that is a sensible purchase, and the warranty is a real commitment rather than a slogan.

The problem is the number. A three-digit dial has exactly one thousand combinations, and the listing describes it as “hundreds of possible combinations, making it harder to crack” — which understates its own lock by a factor of between three and ten. It is a strange error to make in the direction of weakness, and it matters because the code length is the only security specification a luggage lock has. Two other listings on this shelf get the arithmetic right, one of them explicitly noting that a four-digit lock is ten times harder.

What is missing is every dimension. No shackle diameter, no shackle length, no body width — the three figures that decide whether the lock physically fits the zip pulls on your case. The Master Lock on this shelf publishes all three for a fifth of the price. And as on all eight American listings here, the words are “TSA accepted” and “TSA approved” rather than a confirmation of the red-diamond marking this hub’s buying tip asks you to look for.

Availability

Read on the day this page was built: $21 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

What travelers ask

How many combinations does it have?

A thousand. Three dials of ten digits is ten times ten times ten, and the listing says "hundreds of possible combinations" — which understates its own product by a factor of between three and ten. Two other listings on this shelf state the figure correctly: one says up to 1,000 for three digits, and another says four digits is ten times harder than three. On a lock whose entire security claim is the length of its code, the number is the specification.

What is not published?

The shackle. There is no diameter, no length and no body dimension anywhere on the page — and those are the figures that decide whether a lock will pass through a pair of zip pulls at all. The Master Lock listing on this shelf publishes a 30 mm (1.18 in) body, a 3 mm (0.12 in) shackle and a 38 mm (1.50 in) length for a fifth of the price. Here the shackle is "hardened steel" and nothing more.

Rigid shackle or cable?

This is a rigid shackle, which is stronger and less adaptable. A cable threads through small zip holes, awkward pulls and the handles of more than one bag; a rigid shackle closes a standard pair of pulls and nothing else. This hub compares the two directly, and of seven American locks on this shelf three are cable and four are shackle.

More tsa locks

  • Two GiveRare three-digit combination TSA luggage padlocks

    GiveRare TSA-551 combination padlocks, 2-pack

    The dial version of the same maker’s keyed lock, at the same price — and the only listing on this shelf that states the combination count correctly.

    Amazon reference
    B0BQQXGG9W
    EAN
    0772835185268
    • States the combination count correctly: up to 1,000 for three digits
    • Publishes the shackle diameter, 0.15 in, and a 220 lb pull resistance
    • Does not mention the red-diamond TSA marking

    Best for: Two bags and no wish to carry a key, with each lock on its own code

    ≈ $8
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  • Four GiveRare keyed TSA luggage padlocks with their keys

    GiveRare JSTSA815B4 keyed padlocks, 4-pack

    The keyed half of this hub’s second comparison — four brass-cylinder padlocks with eight keys, and the only pull figure published on the shelf.

    Amazon reference
    B0DQ85WNF5
    EAN
    0717097196300
    • A key mechanism rather than a dial, which this hub names as one of its three comparisons
    • Publishes the shackle diameter, 0.12 in, and a stated pull resistance of 220 lb
    • Does not mention the red-diamond TSA marking, as none of the eight American listings here does

    Best for: Someone who would rather carry a key than remember a code, with four bags to lock

    ≈ $8
    Check price on Amazon
  • Master Lock TSA approved combination luggage lock with its braided cable shackle

    Master Lock 4688D set-your-own combination lock

    The only lock in this hub that publishes its body width, its shackle diameter and its shackle length — and the cheapest lock on the shelf.

    Amazon reference
    B000WO84Z2
    EAN
    0071649054419
    • Publishes the body width, 30 mm (1.18 in), the shackle diameter, 3 mm (0.12 in), and the shackle length, 38 mm (1.50 in) — no other lock in this hub gives all three
    • A vinyl-covered braided steel cable rather than a rigid shackle, stated to resist baggage handling equipment
    • Does not mention the red-diamond TSA marking that this hub’s buying tip says to confirm — it says "TSA approved" and "TSA-Accepted"

    Best for: A zip pair on a suitcase, where the cable has to be thin enough to pass through both pulls

    ≈ $6
    Check price on Amazon

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