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C231 — RESISTOR,FIXED,COMPOSITION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

C231: RESISTOR,FIXED,COMPOSITION.

The RESISTOR,FIXED,COMPOSITION is a the manufacturer industrial component. Key specifications include width: 1.250 INCHES NOMINAL IN, height: 0.040 INCHES NOMINAL IN, length: 0.340 INCHES NOMINAL IN, material: STEEL COMP 303 OVERALL, design_type: NONREUSABLE, body_diameter: 3.781 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-186-3327, 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
C231
NSN: 5340-00-186-3327
NIINs: 001863327, 005365311, 007612833, 008254397, 008961106
FSC: 5340 — Hardware, Commercial
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)
SPECIFICATIONS
width1.250 INCHES NOMINAL IN
height0.040 INCHES NOMINAL IN
length0.340 INCHES NOMINAL IN
materialSTEEL COMP 303 OVERALL
design_typeNONREUSABLE
body_diameter3.781 INCHES NOMINAL IN
hole_diameter0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
flow_directionOUTSIDE IN
surface_finish32.0 MICROINCHES OUTSIDE DIAMETER
first_end_styleOVAL
furnished_itemsLOCKNUT
style_designatorCYLINDRICAL W/OUT CONTAINER
NSN5340-00-186-3327
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: C231 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
•
LENGTH: 0.340 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE
•
HEIGHT: 0.040 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE
•
WIDTH: 1.250 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 303
•
FURNISHED ITEMS: LOCKNUT
•
HOLE DIAMETER: 0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LENGTH0.340 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE
HEIGHT0.040 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE
WIDTH1.250 INCHES NOMINAL IN
MATERIALSTEEL COMP 303
FURNISHED ITEMSLOCKNUT
HOLE DIAMETER0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
5340PL0845187Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C231?
C231 is a RESISTOR,FIXED,COMPOSITION.
What parts can replace C231?
There is 1 known substitute for C231: 5340PL0845187. Substitute compatibility should be verified for your specific system.
What is the NSN for C231?
C231 is cataloged in the U.S. Government catalog under NSN 5340-00-186-3327. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.