PartsTable
Technical Data Sheet
3121-4 ✓ 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 DIE SET,RETHREADING,SOLID NUT is a the manufacturer industrial component. Key specifications include flat_height: 0.188 INCHES NOMINAL IN, taper_length: 0.500 INCHES NOMINAL IN, overall_width: 1.499 INCHES NOMINAL IN, overall_height: 0.500 INCHES NOMINAL IN, overall_length: 9.810 INCHES NOMINAL IN, style_designator: STEPPED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-143-7744, 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
3121-4
NSN: 5330-00-143-7744
FSC: 5330
CAGE: 04319 — PARKER-HANNIFIN CORPORATION DBA PARKER HANNIFIN ADVANCED PRODUCTS CO DIV COMPOSITE SEALING SYSTEMS DIVISION (USA)
SPECIFICATIONS
flat_height0.188 INCHES NOMINAL IN
taper_length0.500 INCHES NOMINAL IN
overall_width1.499 INCHES NOMINAL IN
overall_height0.500 INCHES NOMINAL IN
overall_length9.810 INCHES NOMINAL IN
style_designatorSTEPPED
counterbore_depth0.190 INCHES NOMINAL IN
mounting_hole_depth0.500 INCHES NOMINAL IN
counterbore_diameter0.468 INCHES NOMINAL IN
mounting_hole_diameter0.406 INCHES NOMINAL IN
end_item_identificationSTRYKER,FOV
mounting_hole_type_and_quantity2 UNTHREADED-COUNTERBORED
NSN5330-00-143-7744
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3121-4 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
STYLE DESIGNATOR: CIRCULAR
APERTURE DIAMETER: 0.236 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS: 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: HOLLOW
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
APERTURE DIAMETER0.236 INCHES MINIMUM AND 0.259 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEHOLLOW
MATERIALSTEEL CORROSION RESISTING OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
4458Interchangeable
interchangeable cross-reference
interchangeable
1195Interchangeable
interchangeable cross-reference
interchangeable
31214Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9141Interchangeable
interchangeable cross-reference
interchangeable
MS9141-06Interchangeable
interchangeable cross-reference
interchangeable
62016-22Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3121-4?
3121-4 is a DIE SET,RETHREADING,SOLID NUT.
What parts can replace 3121-4?
There are 20 known substitutes for 3121-4: 4458, 1195, 31214 and 17 more. Substitute compatibility should be verified for your specific system.
Is 3121-4 still available?
3121-4 is currently cancelled.
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