SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 630, design_type: SOLID, end_diameter: 0.6090 INCHES NOMINAL IN, overall_height: 2.2500 INCHES NOMINAL IN, special_features: THREADED 0.4375-14 UNC 3B BY 1.250 IN. DEEP,AND 0.250-20 UNC 3B THRU TO CBORE IN, surface_treatment: PASSIVATE.
This part is cataloged in the U.S. Government catalog under NSN 5340-01-319-4911, 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
2121381
NSN:5340-01-319-4911 FSC:5340 — Hardware, Commercial CAGE:10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
material
STEEL COMP 630
design_type
SOLID
end_diameter
0.6090 INCHES NOMINAL IN
overall_height
2.2500 INCHES NOMINAL IN
special_features
THREADED 0.4375-14 UNC 3B BY 1.250 IN. DEEP,AND 0.250-20 UNC 3B THRU TO CBORE IN
surface_treatment
PASSIVATE
second_step_diameter
0.8670 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
material_hardness_rating
36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
material_document_and_classification
AISI 630 17-4PH, UNS S17400 ASSN STD SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classification
QQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
NSN
5340-01-319-4911
COMPONENT DIAGRAM
KEY FEATURES
•
MATERIAL HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
•
END DIAMETER: 0.6090 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
•
DESIGN TYPE: SOLID
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 630 17-4PH, UNS S17400 ASSN STD SINGLE MATERIAL RESPONSE
•
SECOND STEP DIAMETER: 0.8670 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT
2.2500 INCHES NOMINAL IN
MATERIAL HARDNESS RATING
36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
END DIAMETER
0.6090 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
QQ-P-35, TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE
DESIGN TYPE
SOLID
MATERIAL DOCUMENT AND CLASSIFICATION
AISI 630 17-4PH, UNS S17400 ASSN STD SINGLE MATERIAL RESPONSE
SECOND STEP DIAMETER
0.8670 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM IN
SPECIAL FEATURES
THREADED 0.4375-14 UNC 3B BY 1.250 IN. DEEP,AND 0.250-20 UNC 3B THRU TO CBORE IN
SURFACE TREATMENT
PASSIVATE
MATERIAL
STEEL COMP 630
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is 2121381?
2121381 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 2121381?
There is 1 known substitute for 2121381: 5340PL0890550. Substitute compatibility should be verified for your specific system.
What is the NSN for 2121381?
2121381 is cataloged in the U.S. Government catalog under NSN 5340-01-319-4911. This indicates validated use in U.S. government and defense supply chains.
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