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Technical Data Sheet
PartsTable / COMPONENT / A400K
A400K ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The PADLOCK is a the manufacturer industrial component. Key specifications include overall_width: 1.875 INCHES NOMINAL IN, overall_diameter: 1.875 INCHES NOMINAL IN, shackle_diameter: 0.281 INCHES NOMINAL IN, shackle_clearance: 0.750 INCHES NOMINAL IN, operating_mechanism_type: COMBINATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-012-1581, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A400K
NSN: 5340-01-012-1581
FSC: 5340
CAGE: 22107 — AMERICAN LOCK COMPANY DBA AMERICAN LOCK (USA)
SPECIFICATIONS
dial_quantity1
overall_width1.875 INCHES NOMINAL IN
overall_diameter1.875 INCHES NOMINAL IN
shackle_diameter0.281 INCHES NOMINAL IN
shackle_clearance0.750 INCHES NOMINAL IN
operating_mechanism_typeCOMBINATION
combination_knob_quantity1
NSN5340-01-012-1581
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A400K MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DIAL QUANTITY: 1
•
SHACKLE CLEARANCE: 0.750 INCHES NOMINAL IN
•
OPERATING MECHANISM TYPE: COMBINATION
•
OVERALL DIAMETER: 1.875 INCHES NOMINAL IN
•
COMBINATION KNOB QUANTITY: 1
•
SHACKLE DIAMETER: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
DIAL QUANTITY1
SHACKLE CLEARANCE0.750 INCHES NOMINAL IN
OPERATING MECHANISM TYPECOMBINATION
OVERALL DIAMETER1.875 INCHES NOMINAL IN
COMBINATION KNOB QUANTITY1
SHACKLE DIAMETER0.281 INCHES NOMINAL IN
OVERALL WIDTH1.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
400KVARInterchangeable
interchangeable cross-reference
interchangeable
400KInterchangeable
interchangeable cross-reference
interchangeable
SCB26516Interchangeable
interchangeable cross-reference
interchangeable
52C6Interchangeable
interchangeable cross-reference
interchangeable
753Interchangeable
interchangeable cross-reference
interchangeable
KR-IS 1/8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A400K?
A400K is a PADLOCK.
What parts can replace A400K?
There are 8 known substitutes for A400K: 400KVAR, 400K, SCB26516 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A400K?
A400K is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-012-1581. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026