PartsTable / COMPONENT / VS371
VS371
✓ 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
SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, design_type: SOLID, end_diameter: 0.7810 INCHES MINIMUM AND 0.7910 INCHES MAXIMUM IN, bore_diameter: 0.4340 INCHES MINIMUM AND 0.4440 INCHES MAXIMUM IN, coil_quantity: 9-3/8. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-374-9346, 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
VS371
NSN: 5340-00-374-9346 FSC: 5340 CAGE: 53781 — SPX CORP (USA)
SPECIFICATIONS
material STEEL end_style SPRING END,SQUARED AND GROUND BOTH ENDS design_type SOLID end_diameter 0.7810 INCHES MINIMUM AND 0.7910 INCHES MAXIMUM IN bore_diameter 0.4340 INCHES MINIMUM AND 0.4440 INCHES MAXIMUM IN coil_quantity 9-3/8 overall_height 0.4450 INCHES MINIMUM AND 0.4850 INCHES MAXIMUM IN inside_diameter 0.856 INCHES NOMINAL IN special_features MATL-STEEL QQ-S-633,C1010 TO C1022 style_designator SEAT features_provided CASEHARDENED first_step_length 0.0680 INCHES MINIMUM AND 0.0880 INCHES MAXIMUM IN NSN 5340-00-374-9346
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: VS371
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
• COUNTERBORE DIAMETER: 0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN
• SECOND STEP DIAMETER: 1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN
• COUNTERSINK DIAMETER: 0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN
• FEATURES PROVIDED: CASEHARDENED
• DISTANCE FROM END TO FIRST STEP: 0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN
• SECOND COUNTERBORE DIAMETER: 0.9375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
COUNTERBORE DIAMETER 0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN SECOND STEP DIAMETER 1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN COUNTERSINK DIAMETER 0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN SPECIAL FEATURES MATL-STEEL QQ-S-633,C1010 TO C1022 FEATURES PROVIDED CASEHARDENED STYLE DESIGNATOR SEAT DISTANCE FROM END TO FIRST STEP 0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN SECOND COUNTERBORE DIAMETER 0.9375 INCHES NOMINAL IN COUNTERBORE LENGTH 0.3750 INCHES NOMINAL IN SECOND COUNTERBORE LENGTH 0.1875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
E539 Interchangeable interchangeable cross-reference
interchangeable
VS95 Interchangeable interchangeable cross-reference
interchangeable
0HA6513A Interchangeable interchangeable cross-reference
interchangeable
SR216 Interchangeable interchangeable cross-reference
interchangeable
RR9 Interchangeable Same NIIN cross-reference
interchangeable
59966R1 Interchangeable Same NIIN cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is VS371?
VS371 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace VS371?
There are 9 known substitutes for VS371: E539, VS95, 0HA6513A and 6 more. Substitute compatibility should be verified for your specific system.
Is VS371 still available?
VS371 is currently cancelled.