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Technical Data Sheet
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1800T4 ✓ 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 LATCH SET,MORTISE is a the manufacturer industrial component. Key specifications include material: ALUMINUM OR COPPER ALLOY CASE, bolt_type: REVERSIBLE BEVEL, action_type: SPRING, surface_treatment: ANODIZE KNOB, nondefinitive_spec/std_data: 1090S TYPE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-004-7118, 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
1800T4
NSN: 5340-00-004-7118
FSC: 5340
CAGE: 10087 — NI INDUSTRIES INC WEISER LOCK DIV (USA)
SPECIFICATIONS
materialALUMINUM OR COPPER ALLOY CASE
bolt_typeREVERSIBLE BEVEL
action_typeSPRING
knob_quantity1
special_featuresOPERATION METHOD:KNOB ON OUTSIDE AND LEVER ON INSIDE;KEYWAY:NOT INCLUDED;DOOR MINIMUM THICKNESS FOR WHICH DESIGNED:0.750 IN.;KNOB DESIGN:PLAIN;RELEASE BAR:NOT INCLUDED; IN
surface_treatmentANODIZE KNOB
nondefinitive_spec/std_data1090S TYPE
NSN5340-00-004-7118
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1800T4 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
•
NONDEFINITIVE SPEC/STD DATA: 1090S TYPE
•
SURFACE TREATMENT: ANODIZE KNOB
•
MATERIAL: ALUMINUM OR COPPER ALLOY KNOB
•
KNOB QUANTITY: 1
•
BOLT TYPE: REVERSIBLE BEVEL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESOPERATION METHOD:KNOB ON OUTSIDE AND LEVER ON INSIDE;KEYWAY:NOT INCLUDED;DOOR MINIMUM THICKNESS FOR WHICH DESIGNED:0.750 IN.;KNOB DESIGN:PLAIN;RELEASE BAR:NOT INCLUDED; IN
NONDEFINITIVE SPEC/STD DATA1090S TYPE
SURFACE TREATMENTANODIZE KNOB
MATERIALALUMINUM OR COPPER ALLOY KNOB
KNOB QUANTITY1
SURFACE TREATMENTANODIZE CASE
BOLT TYPEREVERSIBLE BEVEL
MATERIALALUMINUM OR COPPER ALLOY CASE
ACTION TYPESPRING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
N117-986Upgraded Successor
successor cross-reference
successor
FF-H-111Upgraded Successor
successor cross-reference
successor
A-A-462Upgraded Successor
successor cross-reference
successor
320432Upgraded Successor
successor cross-reference
successor
320441Upgraded Successor
successor cross-reference
successor
BHMA-A156.20 A83162 3-1/4INUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1800T4?
1800T4 is a LATCH SET,MORTISE.
What parts can replace 1800T4?
There are 17 known substitutes for 1800T4: N117-986, FF-H-111, A-A-462 and 14 more. Substitute compatibility should be verified for your specific system.
Is 1800T4 still available?
1800T4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026