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74892-1 — SEAL,LOCK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

74892-1: SEAL,LOCK.

The SEAL,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, nut_style: ROUND, nut_diameter: 2.614 INCHES MINIMUM AND 2.619 INCHES MAXIMUM IN, thread_class: 3A A, nut_thickness: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, thread_series: UNJS. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-102-5818, 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
74892-1
NSN: 5330-01-102-5818
NIINs: 011025818, 013522641, 016023229
FSC: 5330 — Packing and Gasket Materials
CAGE: 09790 — EATON AEROSPACE LLC DBA STERER ENGINEERING DIV VALVE & ACTUATOR (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
nut_styleROUND
nut_diameter2.614 INCHES MINIMUM AND 2.619 INCHES MAXIMUM IN
thread_class3A A
nut_thickness0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
thread_seriesUNJS
hardness_rating30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
drive_point_depth0.125 INCHES NOMINAL IN
drive_point_width0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
nominal_thread_size2.625 INCHES IN
NSN5330-01-102-5818
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 74892-1 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: NICKEL COPPER ALLOY
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL COPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
74491 PIECE 29Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74892-1?
74892-1 is a SEAL,LOCK.
What parts can replace 74892-1?
There is 1 known substitute for 74892-1: 74491 PIECE 29. Substitute compatibility should be verified for your specific system.
What is the NSN for 74892-1?
74892-1 is cataloged in the U.S. Government catalog under NSN 5330-01-102-5818. This indicates validated use in U.S. government and defense supply chains.
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